Letter from Linus Pauling to A.N. Campbell. September 19, 1945. Page 1  Larger Images / More Information. 1 p.  View Transcript

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Activity Listings

• Letter from F. M. Turner, Reinhold Publishing Company, to Alden H. Emery, Assistant Secretary. RE: Shall send notice of each monograph to the members of the Board of Editors. [Filed under LP Science: American Chemical Society: Correspondence, 1943-1948: Box #14.003 Folder #3.3]
• Letter from LP to A. N. Campbell. [Letters from Campbell to LP September 6, 1945, September 24, 1945] [Filed under LP Correspondence Box: #74.13, file:(C: Correspondence 1945)]

  September 19, 1945

  Professor A. N. Campbell

  Department of Chemistry

  University of Manitoba

  Winnipeg, Canada

  Dear Professor Campbell:

  I am glad to write a few words about your failure to find evidence for the existence in the solid state of the compounds ICl₂Br or IClBr₂.

  From the discussion given in Chapter 11 of my book on the nature of the chemical bond, relating to the electronegativities of the elements, we can understand why the bond between iodine and bromine is much weaker than that between iodine and chlorine; the heat of formation of gaseous IBr, 1.7 kilocalories per mole, is much less than that of 101, 4.0 kilocalories per mole, in each case from the gaseous elementary substances. The existence of ICl₃ shows that the energy of the ICl bond is enough to stabilize this molecule, even though it involves a group of five electron pairs around the iodine atom. On the other hand, we might well expect that the smaller energy of the I-Br bond would not be sufficient to stabilize the molecule IBr₃, nor the intermediate molecules mentioned above.

  If there is anything more that you would like to discuss with me, I should be glad to write to you again.

  Sincerely yours,

  Linus Pauling

  LP:gw

• Letter from LP to Dr. George Tunell RE: Invites Tunell to attend any seminars or courses at Cal Tech as a guest at no charge. Suggests that Tunell inquire at the end of October what topics will be covered and register at the registrar's office. [Notes from George Tunell to LP September 7, 1945, September 21, 1945] [Filed under LP Correspondence: #410.10]
• Letter from LP to Dr. M. H. Averson, Chairman, Chicago Section. RE: Informs him that he and AHP will not be able to attend the presentation dinner for the Willard Gibbs Medal. [Filed under LP Science: American Chemical Society: Materials re: Committees and Awards, 1948-1951, 1967: Box # 14.010 Folder #10.7]
• Letter from LP to Miss Luella A. Huggins. RE: Returns her manuscripts. Informs her that it would not be appropriate for her to contact other members of the Committee. [Filed under LP Science: John Simon Guggenheim Memorial Foundation, 1925-1945: Box #14.013 Folder #13.19]
• Letter from LP to Prof. S.H. Yu, Metals Research Institute, National Tsung Hua University RE: Replies that the press of work in connection to the war have prevented him from considering Yu's manuscript in as much detail as he would have liked, and so has asked Professor Verner Schomaker of his department to also examine the manuscripts. Explains that Prof. Schomaker will write to Yu concerning some points in the manuscripts which are giving him trouble and possible errors found. Asks also for the information of where the papers are to be published and asks for reprints when available. [Letter from Yu to LP June 2, 1945] [Filed under LP Correspondence: 462.5]
• Letter from Ralph Connor, Chief - Division 8, Office for Emergency Management, National Defense Research Committee of the Office of Scientific Research and Development to LP RE: Explains reasoning for not continuing OEMsr-881 under NDRC. [Filed under California Institute of Technology: Research-related materials, 1944-1956: Box #1.028, Folder 28.2]
• Letter from Robert C. Miller, to LP. RE: Informs him of a meeting of the Executive Committee of the Pacific Division of the AAAS will be held October 19th. [Filed under LP Science: American Association for Advancement of Science, 1938-1964: Box #14.001 Folder #1.3]
• Memo from J. H. Sturdivant to LP. RE: Rough draft of a summary of the development of the oxygen meter. [Letter from Stevenson to LP September 12, 1945, Letter from LP to Stevenson October 2, 1945] [Filed under LP Science: Scientific War Work - Materials re: the Pauling Oxygen Meter, 1940-1947: Box #13.001 Folder #1.1]
• Telegram from Ralph Connor to LP RE: States Class A not recommended for OEMSR 881 because NDRC is not able to handle the contract. Letter explaining follows. [Filed under California Institute of Technology: Research-related materials, 1944-1956: Box #1.028, Folder 28.2]