Journal of the Chemical Society, Dalton Transactions p. 1550 - 1555 (1980)
Update date:2022-08-04
Topics:
Griffin, Richard T.
Henrick, Kim
Matthews, Ray W.
McPartlin, Mary
The crystal structures of the title complexes, (1) and (2) respectively, are reported.Complex (1) crystallises in the orthorhombic space group Pca21 with a=20.399(5), b=8.177(6), and c=10.699(4) Angstroem.Crystals of the complex (2) are triclinic, space group P1, with a=10.219(3), b=10.436(3), c=8.452(2) Angstroem, α=91.83(3), β=111.28(4), and γ=101.30(3)o.Full-matrix least-squares refinement has given an R of 0.050 for 475 reflections for (1) and of 0.051 for 2564 reflections for (2).Complex (1) is monomeric with four-co-ordinate thallium and a C-Tl-C angle of 148o; (2) is dimeric with bridging oxygen atoms giving five-co-ordination around the thallium atom and a C-Tl-C angle of 163o.Factors determining the degree of polymerization for this class of thallium compounds are discussed, and 13C n.m.r. spectra of (1) and (2) are reported.
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