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Long‐range tin‐tin coupling constants. III ‐Four‐ and five‐bond coupling via carbon
Author(s) -
Mitchell T. N.,
Nettelbeck C.
Publication year - 1987
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260251010
Subject(s) - tin , chemistry , coupling constant , carbon fibers , coupling (piping) , crystallography , reinforced carbon–carbon , range (aeronautics) , organic chemistry , metallurgy , materials science , physics , particle physics , composite number , composite material
Multinuclear NMR data ( 1 H, 13 C, 119 Sn) have been obtained for almost all possible isomers of the composition Me 3 Sn(C 3 H m )SnMe 3 ( m = 2, 4, 6) and Me 3 Sn(C 4 H n )SnMe 3 ( n = 0, 2, 4, 6, 8). The coupling constants x J (Sn, Sn) ( x = 4, 5) are not linearly related to the corresponding coupling constants x J (H, H), but are particularly large when tin‐carbon bonds can interact hyperconjugatively with carbon‐carbon double or triple bonds.