Interpretation of isomer shift-quadrupole splitting correlations for pentacoordinate trimethyltin complexes

✍ Scribed by J.N.R. Ruddick; J.R. Sams

• Book ID: 103011417
• Publisher: Elsevier Science
• Year: 1974
• Tongue: English
• Weight: 466 KB
• Volume: 28
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(74)80101-6

✦ Synopsis

Lineaf correlations between-'lsSn isomer shifts 6 and quadrupole &pling constants e2qQ are noted for'several series of pentacoordinate trimethyltin derivatives. The sign of the gradient of a 6 versus e"qQ plot is interpreted as indicating whether the predominant effect on 6 in a given series arises from rehybsidization of the tin bonding or-. bitals OS from's p-electron d&shielding mechanism. Differencesin magnkdes of the slopes are related to differences in the fractional s-character of the bonds between tin and the axial substi tuents.

A. number of attempts have been made to correlate ecptorial 119S~ isomer shifts 6 sn with various piopeities of the Iigands [l-9] : Except for tin(IV' ) tetrahalides and '. #1 '= 3-r"(s sin 8 -d,z cos 0) +(2/61' 2)p, , hexahalostannates, where 6gn decreases linearly as : the halogen electronegativity xx increases, [lO],' no clear picture has emerged. Recent 121Sb Mossbauer '.,