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The configuration of the tin-centered radical R3Sn (R = 2,4,6-tri-i-propyphenyl) as studied by ESR

✍ Scribed by M. Lehnig; Th. Apoussidid; W.P. Neumann

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 307 KB
Volume: 100
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(83)80711-8

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✦ Synopsis

ESR data of the stannyl radical (i-PrsPh)&-at temperatures betxveen -140 and +200°C are presented. In solution, the isotropic l19Sn hyperfme coupling decreases with increasing temperature (20°C < T < 200°C) indicating that the radical is non-planar and configurationally stable. At -140°C in a toluene matrix, anisotropic features have been observed (A,, (--q 't9Sn) = 211 mT,Al( 'r9Sn) = 139 mT;gU = 1.995,gl= _ 7.016) leading to an out-of-plane angle of 12.7".

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