C. Schneiderkoglin et al., MIXED GROUP-14-GROUP-14 BONDS .7. INCREMENTAL SYSTEM FOR C-13 NMR CHEMICAL-SHIFTS IN GROUP-14 COMPOUNDS WITH ARYL GROUPS, Journal of organometallic chemistry, 448(1-2), 1993, pp. 39-46
To assign C-13-NMR chemical shifts of aryl groups bonded to Group 14 e
lements, an incremental system for estimating such shifts is presented
. The system gives consistent assignments for a broad range of linear
compounds (Ar4M, Ar6M2, Ar6MM', Ar(m)Ge(n)) and also for some tin-sulp
hur and lead-sulphur heterocycles (Ar2MS)3. The influence of the Group
14 elements on the C-13(ipso, ortho, meta, para) chemical shifts is d
iscussed.