Oregon State UniversitySpecial Collections & Archives Research Center

Ava Helen and Linus Pauling Papers, 1873-2013

11. Science. 1923-1994.

This section has been divided into fifteen thematic sub-sections, which, when taken as a whole, reflect the extraordinary breadth of Linus Pauling's scientific biography. Boxes in the Science section typically hold manuscripts, research notes, correspondence, figures, experimental data, non-Pauling reprints and other scientific research materials. Generally speaking, materials have been arranged and cataloged according to research topic. However, two sub-sections reflect the institutional architecture either supporting or directing Pauling's work during specific periods of his life. For example, the bulk of the collection's holdings concerning Pauling's relationship with the American Chemical Society have been cataloged under the rubric "Scientific, Research and Grant-Funding Institutions." A similar approach has been taken with much of Pauling's work sponsored by the Guggenheim Foundation, Rockefeller Foundation, Ford Foundation, etc.


221 boxes

3. The Nature of the Chemical Bond.

Boxes 3.001 - 3.010 (Page: 1 - 10)



3.001.
LP Notes & Calculations Vol. II re: Chemical Bonds, 1923-1929. [including first discussion of Hybridization, 1928].
[Note: This box contains a set of manuscripts that were originally collated and bound by Linus Pauling in 1950. Most, but not all, of the manuscripts refer to his work on the nature of the chemical bond.]
1.1.
Notes and Calculations re: "treatment of spectroscopic data for HCl with use of half quantum numbers", 1923.
1.2.
Manuscript Notes: "Notes on 'Quantizing non-Harmonic Oscillator-Rotators', M. Born and Hückel, Phys. z., 24, 1 (1923)", 1923.
1.3.
Typescript: The Specific Heat, Viscosity, Thermal Conductivity and Density of Gases, 1924.
1.4.
Manuscript Notes: "Cataphoretic Mobilities of Oil Drops", 1925.
1.5.
Manuscript Notes: "Cataphoretic Mobilities of Oil Drops in Solutions of Ions", 1925. [pp. 10-11 contain handwritten calculations by Peter Debye].
1.6.
Manuscript Notes: "Notes on 'Grundlagen und Auwendeurgen [?] der Statistichen Mechanik', A.Wassmuth, Sammbung Vieweg, Keft 25", May 7, 1925.
1.7.
Manuscript Notes: "The Canonical Distribution", May 10, 1925.
1.8.
Manuscript Notes: "The Cataphoresis of Liquid Spheres", 1925.
1.9.
Manuscript Notes: "Vapor Pressures Near Absolute Zero", February 28, 1925.
1.10.
Manuscript Notes: "The Entropy of a Polyatomic Gas at Very Low Temperatures", March 8, 1925.
1.11.
Manuscript Notes: "Notes on 'Deduction of Dissociation-Equilibria from the Quantum Theory and the Consequent Calculation of Chemical Constants', P. Chrenfast and V. Terkal, Anm. d. Phys., 65, 109 (1921)", 1925.
1.12.
Manuscript Notes: "Volume and Surface of a Hyperellipse", 1925.
1.13.
Manuscript Notes: "Recalculation of the Entropy of a Diatomic Gas Using Method of Ehrenfest and Terkal", March 3, 1925.
1.14.
Manuscript Notes: "Entropy of a Diatomic Gas", March 1, 1925.
1.15.
Manuscript Notes: "Notes on 'On the Theory of Quanta', M. H. Poincarè, Journal de Physique, 2, ser. 5, 5 (1912)", 1925.
1.16.
Manuscript Notes: "Statistical Mechanics and Thermodynamics", 1925.
1.17.
Manuscript Notes: "Inter-ionic Attraction in Dwarf Stars", 1924.
1.18.
Manuscript Notes: "Notes on 'On the Expression of a Number in the Form ax2 + by2 + cz2 + du2', S. Ramanujan, Proc. Cambridge Phil Soc., XIX (1917)", 1925.
1.19.
Manuscript Notes: "Notes on 'Some Properties of Bernoulli's Numbers', S. Ramanujan, Collected Papers", 1925.
1.20.
Manuscript Notes: "Group Theory and Chemical Combination", 1925.
1.21.
Manuscript Notes: "London's paper. General ideas on bonds" [LP Annotation: "Here we have the first discussion of hybridization"], 1928.
1.22.
Manuscript Notes: "Thomas's Atoms", 1928 [?].
1.23.
Manuscript Notes: "Translation of 'Quantum Theory of the Monatomic Perfect Gas', A. Einstein, Setz. P. Ak. Wiss., 261 (1924)", 1928 [?].
1.24.
Manuscript Notes: "Translation of 'Quantum Theory of Monatomic Perfect Gas', A. Einstein, Setz. P. Ak. Wiss., 3 (1925)", 1928 [?].
1.25.
Manuscript Notes: "Translation of 'Thermal Equilibrium in Radiation Field in Absence of Matter', S. N. Bose, z. Phys., 27, 384 (1924)", 1928 [?].
1.26.
Manuscript Notes: "Translation of 'Des Adiabstenprinzip ui [?] der Quantenmechanik', M. Born, z.f. Phys., 40, 167 (1926)", 1928 [?].
1.27.
Manuscript Notes: "Translation of 'Zur Theorie des Kernzerfalls', M. Born, z. f. Phys., 58, 306 (1929)", 1929.
1.28.
Manuscript Notes: "Translation and Notes on 'Schallausbreitung in Teilweise Dissazüertan Gasen', A. Einstein, Sitz. der preuss. Akad. Der Wiss., (1920)", 1925.
1.29.
Manuscript Notes: "The Velocity of Sound", No Date [1920s].
1.30.
Manuscript Notes: "Translation of 'Remarks on the Apparent Selective Reflection of X-Rays in Crystals', W. Kossel, z. f. Phys., 23, 278 (1924)", No Date [1920s].
1.31.
Manuscript Notes: "The Crystal Structure of Cesium Tri-iodide and Cesium Dibromo-iodide", 1925 [?].
1.32.
Manuscript Notes: "X-Ray Edges", 1929.
1.33.
Manuscript Notes: No Title, [re: crystal energies of hydrogen ions] 1929.
1.34.
Manuscript Notes: "Electron Affinities of Halogen Atoms", 1929.
1.35.
Manuscript Notes: No Title, [re: Pascal's values for ionic crystal energies] 1929.
1.36.
Manuscript Notes: "Magnetic Susceptibility and Chemical Combination", No Date. [1920s].
1.37.
Manuscript Notes: "Calcium Germanate Gells", September 12, 1929.

3.002.
Calculations and Manuscripts by Linus Pauling re: Chemical Bonds, 1930-1949.
[Note: This box contains a set of manuscripts that were originally collated and bound by Linus Pauling in 1950. Most, but not all, of the manuscripts refer to his work on the nature of the chemical bond.]
2.1.
Manuscript Notes: "F-values for Hydrogen-like Eigenfunctions", November 3, 1930.
2.2.
Manuscript Notes: "Eigenfunctions for Chemical Bonds", December 1930. [per LP annotation written on January 16, 1975].
2.3.
Manuscript Notes: "The Energies of Covalent Bonds - Calculations made in Pasadena and Cambridge May 25, 1931 to May 7, 1932".
2.4.
Manuscript Notes: "Bond Energies - Final Revision" Cambridge, April 9, 1932.
2.5.
Manuscript Notes: "Reconsideration of Bond Energies, with Sherman", October 12, 1932.
2.6.
Typescript, Manuscript, Notes, and Correspondence: The Normal State of the Helium Molecule Ions He2+ and He2++, 1932-1934.
2.7.
Typescript, Manuscript: The Electronic Structure of Excited States of Simple Molecules, June 1948.
2.8.
Manuscript Notes: The Diamagnetic Anisotropy of Aromatic Molecules and Graphite", June 14, 1936.
2.9.
Manuscript Notes: "Orientation of CN- groups in NaCN", April 1, 1939.
2.10.
Manuscript Notes: "The Effect of Charge on Covalent Radius", March 2, 1937.
2.11.
Manuscript Notes: "Structure Factor for a General Spherical Surface Distribution of Scattering Matter about Points in a Crystal", March 31, 1939.
2.12.
Typescript, Manuscript Notes, and Correspondence: Note on the Dissociation of Symmetrical and Unsymmetrical Hexa-arylethanes, 1943.
2.13.
Manuscript Notes: "Determination of Molecular Weight by Light Scattering", August 6, 1944.
2.14.
Manuscript Notes: "The Color of Complex Ions", July 4, 1946.
2.15.
Manuscript Notes: "A Discussion of the Intensity of Absorption of Light", May 27, 1945.
2.16.
Manuscript Notes: "Values of Bond Energies in Organic Molecules", November 11, 1935.
2.17.
Manuscript Notes: "Nuclear Structure", May 1, 1949.
2.18.
Manuscript Notes: "Nuclear Moments", May 27, 1949.

3.003.
Manuscript Notes by Linus Pauling re: Chemical Bonds, 1924-1939.
3.1.
Manuscript Notes re: "Sizes of Electrons and Protons", November 1, 1924.
3.2.
Manuscript Notes, Diagrams: "Schaeffer's work on stability and ionic size", 1927-1928.
3.3.
Notes, Reprint: "Allgemeines über die verschiedenen Bindungsarten", Grimm, Z. f. Elektrochem. vol. 34, no. 430, 1928.
3.4.
Manuscript Notes: "β-Alumina", June 11, 1929.
3.5.
Manuscript Notes: "Potential Functions for Electron-pair Bonds", April 19, 1931.
3.6.
Manuscript Notes: "Dissociation Energies of Halogen Compounds", November 11, 1931.
3.7.
Manuscript Notes: "The Carbon-Oxygen Bond", 1931 [?].
3.8.
Manuscript Notes: "Electric Moments and Bond Type", 1931 [?].
3.9.
Manuscript Notes: "Diatomic Molecules", 1931 [?].
3.10.
Notes: "The Water Molecule", Albert Sprague Coolidge, Physical Review, vol. 42, no. 189, November 14, 1932.
3.11.
Manuscript Notes: "Halogen Oxides", December 11, 1932.
3.12.
Manuscript Notes, Calculations: "NH4 HF2", December 13, 1932.
3.13.
Manuscript Notes: "The Oxygen Molecule", December 16, 1932.
3.14.
Notes: "Cosine and Sine Tables for Angles Measured in Revolutions", August 5, 1933.
3.15.
Manuscript Notes: "MoO3", October 4, 1933.
3.16.
Notes, Reprint re: Electric Moments, Polarization, Resonance, etc., 1934-1939.
3.17.
Notes: "Co(CO)3NO", January 24, 1934.
3.18.
Typescript, Notes: "Mole Refraction Values", no date; "Hybridization of Bond Functions", May 13, 1934.
3.19.
Notes: "The Strength of Bond Orbitals", 1934 [?].
3.20.
Notes: "Salvarsan", January 6, 1935.
3.21.
Notes: "Jeremejevite - AlBO3", November 14, 1936.
3.22.
Manuscript Notes: "Borates", November 21, 1936.
3.23.
Manuscript Notes, Slides re: Te(OH)6 and B4C work, 1936-1937.
3.24.
Manuscript Notes: "Discussion of Hybridization", [Includes Manuscript Notes: "Total Number of Independent Bond Structures with Phantom Orbitals", by S. Pasternak] July 7, 1937.
3.25.
Manuscript Notes: "Cs4CuAu2Cl12", September 6, 1937.
3.26.
Manuscript Notes and Slides re: EuSO4 and BaSO4, 1937.
3.27.
Manuscript Notes: "Liquids", April 11, 1939.
3.28.
Manuscript Notes: "Interatomic Distances in Liquids", April 12, 1939.
3.29.
Manuscript Notes: "Transitions for Tetrahedral Molecules", April 21, 1939.
3.30.
Manuscript Notes: "Ag2O3", No Date [1930s].
3.31.
Manuscript Notes: "HIO3; H5IO5", No Date [1930s].
3.32.
Manuscript Notes: "Boron hydrides", No Date [1930s].
3.33.
Manuscript Notes: "Calcium aluminate hexahydrate", No Date [1930s].
3.34.
Manuscript Notes: "Comments on Mullikan's II paper", No Date [1930s].
3.35.
Manuscript Notes: "Sidgwick's 'coordinate bond'", No Date [1930s].
3.36.
Manuscript Notes: "Discussion of lowering of freezing point", No Date [1930s].
3.37.
Assorted Manuscript Notes, Calculations and Drawings re: Chemical Bonds, No Date [1930s].

3.004.
Manuscript Notes, Calculations and Drawings re: s-p and s-p-d Hybridization, 1934-1936.
4.1.
Manuscript Notes: "Li2+", October 6, 1934.
4.2.
Manuscript: Simplified Treatment of Atoms and Molecules, October 8, 1934.
4.3.
Manuscript Notes: "Li2+ Summary of Results", November 5, 1934.
4.4.
Notes, Calculations and Drawings: "3s-3p-3d", 1935 - 1936.
4.5.
Manuscript Notes: "s vs. as + bp", March 11-12, 1936.
4.6.
Data, Calculations re: evaluations of 3s 3p 3d integrals, No Date [1930s].
4.7.
Manuscript Notes: "Energy of 2s2p hybrid bonds at p=2.5", No Date [1930s].
4.8.
Manuscript Notes, Calculations: "The Wave Functions for Na2+ (3s, 3p, 3d)", No Date [1930s].
4.9.
Manuscript Notes: "2s2S and 2p2P of Li, etc.", No Date [1930s].
4.10.
Manuscript Notes: "Configuration of 2p2 of BeI, etc.", No Date. [1930s].
4.11.
Assorted Notes, Calculations and Drawings re: s-p and s-p-d hybridization, No Date [1930s].

3.005.
Manuscript Notes by Linus Pauling re: Chemical Bonds, 1944-1953.
5.1.
Manuscript Notes: "Determination of number of unexcited electronic structures for porphyrins", June 4, 1944; Assorted Notes re: porphyrins.
5.2.
Manuscript Notes: "Quinquivalent Vanadium" and "Trivalent Arsenic", 1949.
5.3.
Manuscript Notes: "Color", October 13, 1945.
5.4.
Manuscript Notes, Correspondence, Reprint: "Treatment of CrO4", August 16, 1946.
5.5.
Manuscript Notes: "The Structure of Carbides", October 5, 1947.
5.6.
Manuscript Notes: "B10H14" [decaborane] 1947.
5.7.
Manuscript Notes: "Bonds in Simple Molecules", Oxford, January 3 - February 4, 1948.
5.8.
Manuscript Notes: "Free Valence", February 16, 1948.
5.9.
Manuscript Notes: "Partial Ionic Character of Bonds", June 1948.
5.10.
Manuscript Notes: "The Non-Existence of Perleromates", December 26, 1948.
5.11.
Manuscript Notes: "Bond Orbitals with p-d Hybridization in Electronegative Atoms", December 26, 1948.
5.12.
Manuscript Notes: "Diatomic Hydrides", January 9, 1949.
5.13.
Manuscript Notes: "Dissociation Energies", January 25, 1949.
5.14.
Manuscript Notes: "Radii, etc", January 27, 1949.
5.15.
Manuscript Notes: "Dissociation Energies of Elementary Diatomic Molecules", April 17, 1949.
5.16.
Manuscript Notes: "The Stability of S8", April 19, 1949.
5.17.
Manuscript Notes: "Closest-packed Superstructures", November 12, 1949.
5.18.
Typescript Notes re: bond distances and angles, by Verner Shomaker, 1949.
5.19.
Interoffice Memorandum: from LP to Sidney Weinbaum re: calculations of resonance energies for specific free radicals, June 12, 1950.
5.20.
Manuscript Notes: "Hybridization in P", September 9, 1950.
5.21.
Manuscript Notes: "Hybrid Bond Orbitals", September 17, 1950.
5.22.
Manuscript Notes: "Theory of Atomic Radii", September 20, 1950.
5.23.
Manuscript Notes, Correspondence: "Van der Waals Stabilization of Black Phosphorus", November 17, 1950.
5.24.
Manuscript Notes: "Exponential Repulsive Potentials", November 23, 1950.
5.25.
Manuscript Notes: "Compounds of Phosphorus", December 2, 1950.
5.26.
Manuscript Notes: "The Electroneutrality Principle", December 16, 1950.
5.27.
Manuscript Notes re: structure of polyhedra, 1950.
5.28.
Manuscript Notes, Typescript Notes, Correspondence, Drawings re: structure of the sigma phase, LP and David Shoemaker, 1950-1951; Assorted Notes to Self re: chemical bonds, 1950, 1954.
5.29.
Interoffice Memo re: "Suggested study of alkali halides and hydrogen halides", from LP to Fred Ewing, January 3, 1951.
5.30.
Manuscript Notes: "Configuration of CH3+", January 18, 1951.
5.31.
Manuscript Notes: "π-Bond Resonance and Structure of SO2, SiF4, SO4- -, etc.", Summer 1951.
5.32.
Manuscript Notes: "Consider SiC", August 19, 1951.
5.33.
Manuscript Notes: "A New Electric Charge Rule", August 20, 1951.
5.34.
Manuscript Notes: "A Treatment of Partial Ionic Character", August 20, 1951.
5.35.
Manuscript Notes: "Dipole Moments", October 3, 1951.
5.36.
Manuscript Notes: "A New Discussion of Partial Ionic Character", October 5, 1951.
5.37.
Manuscript Notes: "Red P", November 6, 1951.
5.38.
Manuscript Notes: "Reconsideration", [re: structures of compounds containing Sulfur and Oxygen] November 10, 1951.
5.39.
Manuscript Notes: "A Simple Theory of Electrical Conductivity", December 19, 1951.
5.40.
Manuscript Notes: "π-Bond Orbitals (after discussion with Verner Shomaker)", May 8, 1952.
5.41.
Interoffice Memo re: "Force constants for hydrogen bonds", R. M. Badger to LP, October 22, 1952.
5.42.
Manuscript Notes: "Dipole Moments", August 24, 1953.
5.43.
Notes, Calculations re: Standard Radii, [Includes packets of calculations by LP and Sidney Weinbaum labeled "Alkali Halides, NaCl Structure"; "Divalent NaCl Types, Alkaline Earth Oxides, Sulfides, Tellurides"; "CaF2, BaF2, SrF2, SrCl2"] No Date [1950s].
5.44.
LP Notes: "B5H11", [pentaborane] No Date [1950s].
5.45.
LP Notes: "Methods for sp Hybridization", No Date [1950s].
5.46.
Notes, Calculations re: Heat of fusion and heat of vaporization for assorted compounds, No Date [1950s].
5.47.
Manuscript Notes re: Pb-O compounds, No Date [1950s].
5.48.
Assorted Manuscript Notes re: Chemical Bonds, No Date [1950s].

3.006.
Notes and Data by Linus Pauling re: Chemical Bonds, 1956-1981.
6.1.
LP Spiral Notebook: labeled "NCB", but contains LP notations and newspaper clippings on a wide variety of topics, 1956 [?].
6.2.
LP Notes: "IF5", November 1957.
6.3.
Manuscript Notes: "N2, Why is N≡N bond so strong?", January 2, 1958.
6.4.
Manuscript Notes taken by LP at the International Summer School in Quantum Chemistry, Vålådalen, Sweden, August 26, 1958.
6.5.
Research Abstract: "The Carbon-Carbon Triple Bond and the Nitrogen-Nitrogen Triple Bond", 1960-1961.
6.6.
Manuscript Notes: "Significance of Correlation", December 16, 1961.
6.7.
Manuscript Notes: "Are Alloys of Lithium Metallic or Ionic-Covalent?", October 6, 1962.
6.8.
Non-Pauling Typescript, Correspondence, Notes, Data, Diagrams re: "Dissociation Energies of First-Short Period Diatomic Molecules", April 17, 1963.
6.9.
Manuscript Notes re: CF2, July 14, 1963.
6.10.
Manuscript Notes: "Treatments of Ionization Energies", July 15, 1963.
6.11.
Manuscript Notes: "[Be(CH3)2]", August 7, 1963.
6.12.
Assorted Notes re: Bond energies for Boron compounds, 1963, No Date. [LP and Gus Albrecht].
6.13.
Manuscript Notes: "Polarizability and Bonding", August 2, 1966.
6.14.
Typescripts, Notes: "Research Problem: Bond Angles in Transargononic Molecules" and "Research Problem: Energy Values of Molecules Containing Bent Bonds", October 16, 1967.
6.15.
Typescripts: "Proposed Research on Bond Orbitals"; "Orbitals for Prolate Distortion", October 23, 1967.
6.16.
Typescripts: "Hybrid Bond Orbitals for 1-s Couplings", October 23, 1967.
6.17.
Typescript: "The Carbon Trifluoride Radical", 1967 [?].
6.18.
Periodic Table of the Elements annotated by LP for work on isotopes, 1967-1969.
6.19.
Manuscript Notes re: Physical Chemistry, by W. J. Moore, Prentice-Hall, 4th ed., 1972.
6.20.
Manuscript Notes: "Hydrogen Atom", April 10, 1974.
6.21.
Grant Proposal, Correspondence: "Theoretical Studies of the Structure of Molecules and the Nature of the Chemical Bond", National Science Foundation Research Proposal CHE-7622536, May 10, 1976.
6.22.
Manuscript Notes: "[Co6(CO)15]- -", December 16, 1976.
6.23.
Manuscript Notes: "Ru6(CO)18H2", January 15, 1977.
6.24.
Manuscript Notes: "[Os6(CO)18]- -", May 16, 1980.
6.25.
Research Notes, Data re: approximate equations for n bond orbitals, September 21, 1980.
6.26.
Research Notes, Data: "Work on Tetragonal Prism Structures", LP and Barclay J. Kamb, September 24, 1980.
6.27.
Research Notes: "7 orbitals", December 2, 1980.
6.28.
Data: McClure Structure Iteration Data Sets using Deficiency Sum Equation and Squares Sum, December 9, 1980.
6.29.
Grant Application, Correspondence, Memoranda, Assorted Reports: “The Structure of Molecules and Crystals and the Nature of the Chemical Bond”, National Science Foundation grant DMR-8012728, 1980-1982.
6.30.
Research Notes: "Russian paper s to dx2+y2", April 1981.
6.31.
Manuscript Notes: "A Simple Theory of the Trans Effect in Complexes of the Transition Elements", June 21, 1981.
6.32.
Manuscript Notes: "Hybrid Orbitals for Multiple Bonds", [Includes discussion of Uranyl and Vanadyl compounds] June 22-24, 1981.
6.33.
LP Notes re: "Let n distinct points in the plane be given. Prove that fewer than 2n3/2 pairs of them are unit distance apart", Engineering and Science, June 1981: 11August 30, 1981.

3.007.
Notes and Data by Linus Pauling re: Chemical Bonds, 1982-1987, No Date.
7.1.
Manuscript Notes: "Bonds Formed by Transition Metals", April 7, 1982.
7.2.
Manuscript Notes: "Magnetic Moments", [re: compounds containing Boron] June 20, 1982.
7.3.
Manuscript Notes: "Bond angles - reconsideration of my 1976 paper", July 28, 1982.
7.4.
Manuscript Notes: "Ce(Pd, Rh, or Ag)3", August 1, 1982.
7.5.
Manuscript Notes: "Brillouin polyhedron", [{220}, {221}, {222}, {300}, {310} and {311}] August 3-7, 1982. [Includes extensive notes by Zelek Herman].
7.6.
Manuscript Notes: "Bonds - per atom - Square arrangement in plane", November 10, 1982.
7.7.
Research Notes re: Effect of Pivoting Resonance, 1982 [?].
7.8.
Correspondence, Reprint, Research Notes re: bond angles in transition metal-tricarbonyl compounds, 1982-1983.
7.9.
Research Notes: "Consider Cr13Fe62Ni25", January 12, 1983.
7.10.
Manuscript Notes: "Partial Ionic Character", January 15, 1983.
7.11.
Research Notes: Observed sp3 terms, January 29, 1983.
7.12.
Research Notes: "Electrolytic solutions" and "Another attack on ionic solutions for small concentr [sic] atoms", March 10-11, 1983.
7.13.
Manuscript Notes: "{111} of Si", April 16, 1983.
7.14.
Research Notes re: Transargonic structures, May 14, 1983.
7.15.
Research Notes, Background Material re: structure of hydrazine, July 12-28, 1983.
7.16.
Manuscript Notes: "Boranes", February 1984.
7.17.
Manuscript Notes: "Explanation of the nobility of the noble weapons", July 8, 1984.
7.18.
Grant Application, Correspondence, Memoranda: "Fundamental Investigations into the Nature of the Bonding and Structure of Metals and Alloys (Materials Research)", National Science Foundation grant proposal DMR-8421374, [resubmitted as grant proposal DMR-8608628] 1984-1986.
7.19.
Research Notes: Paramagnetism of V2O3, Cr(H2O)63+, and pyrene, February 19, 1985.
7.20.
Data: Computer output of bond lengths, angle connectivities and current atoms list; bond length tables, ca. 1987.
7.21.
Non-Pauling Notes: Calculations on alpha manganese (KBHN), No Date.
7.22.
Research Notes re: Valence by G. N. Lewis, No Date.
7.23.
Research Notes, Data Plots: "Energy of adding an particle x 103 in At. Wt. (C12) units" and "(nMHe4 - Mn) x 103", No Date.
7.24.
Research Notes: Calculations related to moment and electric induction, No Date.
7.25.
Research Notes: Resonance of C-H orbitals, No Date.
7.26.
Research Notes: Degree of approximation - least deviation (alpha, beta, gamma, and delta position from different angles), No Date.
7.27.
Research Notes, Data: "Approximation - least square of deviation", No Date.
7.28.
Research Notes: Relationship of vapor point of Xe and Kr in ice, water, and CH3Cl, No Date.
7.29.
Research Notes: "Energy of Transfer of Electron between Adjacent First-row Atoms", No Date.
7.30.
Research Notes: "F5Re--F--Re(CO)5", No Date.
7.31.
Research Notes: "[SFe(CO)3]2," No Date.
7.32.
Research Notes: "Os3(CO)12I2", No Date.
7.33.
Research Notes: "1,1,1,1,-tetracarbonyl-3,4-dicyclopropyl-1-ferracyclopent-3-ene-2,5-dione", No Date.
7.34.
Research Notes: "3,-Dimethylstyrene bis Fe(CO)3 and 1,1,1-tricarbnylferraindene bis Fe(CO)3", No Date.
7.35.
Research Notes: "Tetracarbonyl (3,6-dithiaoctane) chromium (0)", No Date.

3.008.
Assorted Research Notes re: Chemical Bonds, No Date.
8.1.
Assorted Research Notes re: Chemical Bonds, No Date.
8.2.
Index Cards: 4 x 6 bibliography source cards concerning chemical bond research references, No Date.

3.009.
Element Research Notes by Linus Pauling re: Chemical Bonds, 1928-1963.
9.1.
Typed and Handwritten Notes: H: Hydrogen 1, No Date [1930s].
9.2.
Notes, Reprint: He: Helium 2, No Date [1930s].
9.3.
Notes: Li: Lithium 3, 1932, 1935.
9.4.
Empty Folder: Be: Beryllium 4, No Date.
9.5.
Notes, Reprints, Data: B: Boron 5, 1931, 1933-1937, 1963, No Date.
9.6.
Notes, Clippings: C: Carbon 6, 1932, 1934-1937, 1939-1941, No Date.
9.7.
Correspondence, Notes, Reprint: N: Nitrogen 7, 1932-1937, 1942, No Date.
9.8.
Notes: NH4+ Ammonium, 1935, 1937, No Date.
9.9.
Notes, Clipping: O: Oxygen 8, 1928, 1930-1937, 1940, No Date.
9.10.
Notes: F: Fluorine 9, 1934, 1937, No Date.
9.11.
Notes: Li: Lithium 3, Be: Beryllium 4, B: Boron 5, C: Carbon 6, N: Nitrogen 7, O: Oxygen 8, F: Fluorine 9. (First Row Elements, 3-9), 1935-1936, No Date.
9.12.
Empty Folder: Ne: Neon 10, No Date.
9.13.
Notes, Newspaper Clipping: Na: Sodium 11, 1934, 1935, 1937, No Date.
9.14.
Empty Folder: Mg: Magnesium 12, No Date.
9.15.
Notes, Reprint: Al: Aluminum 13, 1935-1937, No Date.
9.16.
Notes, Correspondence, Newspaper Clipping: Si: Silicon 14, 1934-1937, 1942, No Date.
9.17.
Notes, Reprint: Silicates, 1937, No Date.
9.18.
Notes: P: Phosphorous 15, 1934-1937, 1939, 1941, No Date.
9.19.
Notes, Correspondence, Reprints, Newspaper Clipping: S: Sulfur 16, 1933-1937, 1941, 1943, No Date.
9.20.
Reprints: Sulfide Minerals, 1936-1937, No Date.
9.21.
Notes: Cl: Chlorine 17, 1937, No Date.
9.22.
Empty Folder: Ar: Argon 18, No Date.
9.23.
Notes: K: Potassium 19, 1934, 1936, No Date.
9.24.
Empty Folder: Ca: Calcium 20, No Date.
9.25.
Empty Folder: Sc: Scandium 21, No Date.
9.26.
Empty Folder: Ti: Titanium 22, No Date.
9.27.
Notes: V: Vanadium 23, 1934, 1936-1937, No Date.

3.010.
Element Research Notes by Linus Pauling re: Chemical Bonds, 1931-1982.
10.1.
Notes: Cr: Chromium 24, 1933, 1940-1945, 1957, 1960-1977, No Date.
10.2.
Notes: Mn: Manganese 25, 1922, 1934, 1936, No Date.
10.3.
Notes, Reprints, Articles: Fe: Iron 26, 1931-1976.
10.4.
Notes: Co: Cobalt 27, 1934-1982.
10.5.
Notes, Reprints: Ni: Nickel 28, 1932-1975.