Accession Number:

AD0006418

Title:

PREPARATION AND PROPERTIES OF ORGANIC DERIVATIVES OF TIN HYDRIDE

Descriptive Note:

Corporate Author:

TENNESSEE AGRICULTURAL AND INDUSTRIAL STATE UNIV NASHVILLE

Personal Author(s):

• Dillard, C. R.
• Holmes, E. E.

Report Date:

1952-08-31

Pagination or Media Count:

36.0

Abstract:

Thermochemical studies of organo-tin compounds were made to obtain data for the calculation of bond energies and electronegativity of the metal. The heats of combustion were -934 or - 2.8, -1547 or - 1.5, -2816 or - 3. 9, -3182 or - 1.8, and -4060 or - 3.2, for Me4Sn, Et4Sn, Bu4Sn, Ph4Sn, and tetrahexyl tin, respectively. Heats of formation calculated from these data are also presented. Calculations of the Sn-C bond energies from Paulings empirical values of single-bond energies and heats of atomization indicated that the bond energies in the organo-tin molecules were additive and that the Sn-C bond energy had a reasonably constant value of about 25 kg-calmole. The spectrograms of 6 symmetrically substituted alkyl stannanes were studied. Preliminary frequency assignments are listed for the stretching and deformation vibrations of the C-H bond. No skeletal vibrations appeared in the 2- to 16-micron spectral range. Unsuccessful attempts made to prepare chloroethyl stannanes by the methods used to prepare analogous Si compounds indicated a difference in bond type.

Descriptors:

• *TIN COMPOUNDS
• MOLECULAR VIBRATION
• DEFORMATION
• CHEMICAL BONDS
• ATOMIZATION
• THERMOCHEMISTRY
• SKELETON
• COMPUTATIONS
• COMBUSTION

Subject Categories:

• Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE