Solvent effects on two-bond sup 119 Sn- sup 117 Sn spin coupling in (n-Bu sub 3 Sn) sub 2 O and (Me sub 3 Sn) sub 2 O
- National Bureau of Standards, Gaithersburg, MD (USA)
Profound solvent effects on the tin-tin spin coupling constant, {sup 2}J({sup 119}Sn, {sup 117}Sn), of the hexaorganodistannoxanes (n-Bu{sub 3}Sn){sub 2}O and (Me{sub 3}Sn){sub 2}O have been investigated for a large number of solvents. For both compounds, a good correlation has been found with the empirical acceptor number solvent scale, implicating a principal interaction of solvent with oxygen. Evidence consistent with a halogen-bonding interaction in CH{sub 2}Cl{sub 2}, CHCl{sub 3}, and CCl{sub 4} solutions was found for (n-Bu{sub 3}Sn){sub 2}O. This effect is absent, or strongly reduced, for (Me{sub 3}Sn){sub 2}O. While no evidence of a coordinative interaction of solvent with tin was found for the n-butyl derivative, changes in {sup 1}J({sup 119}Sn, {sup 13}C) and the {sup 119}Sn chemical shift for (Me{sub 3}Sn){sub 2}O provide evidence of a secondary interaction of strongly coordinating solvents with tin. A structural basis for the solvent effect on {sup 2}J({sup 119}Sn, {sup 117}Sn) has been proposed on the basis of recent empirical correlations of {sup 2}J({sup 119}Sn, {sup 117}Sn) with the Sn-O-Sn angle. 24 refs., 3 figs., 3 tab.
- OSTI ID:
- 7071182
- Journal Information:
- Inorganic Chemistry; (USA), Vol. 28:23; ISSN 0020-1669
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALKANES
CHEMICAL BONDS
ORGANOMETALLIC COMPOUNDS
OXYGEN COMPOUNDS
TIN COMPLEXES
EXPERIMENTAL DATA
SOLVENT PROPERTIES
TIN 117
TIN 119
COMPLEXES
DATA
DAYS LIVING RADIOISOTOPES
EVEN-ODD NUCLEI
HYDROCARBONS
INFORMATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
RADIOISOTOPES
STABLE ISOTOPES
TIN ISOTOPES
400201* - Chemical & Physicochemical Properties
400202 - Isotope Effects
Isotope Exchange
& Isotope Separation