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- W1990647575 abstract "Reaction of K[(SePPh2)2N] with [Te(tu)4]Cl2 (tu = thiourea) in methanol gave [Te{(SePPh2)2N}2], (1), while reaction of K[(SPPh2)2N] with 4-MeOPhTeCl3 in methanol gave [4-MeOPhTe-{(SPPh2)2N}]2, (2). The crystals of 1 are triclinic and contain centrosymmetric molecules. The ligands are bidentate and form a true square planar Te(II) complex with TeSe4 coordination. For 2, the crystals are also triclinic, and the dimeric molecules are centrosymmetric. Each dithiolate ligand bridges the two Te(II) atoms; the result is a T-shaped coordination around each tellurium atom. A tendency to weak TeTe bonding across the ring-formed dimer roughly in the direction of the missing fourth ligand in a potential square planar tellurium coordination sphere is also found [TeTe = 3.761 (1) Å]. In 1, the Te–Se bonds have an average length of 2.797 Å. The Te–S bonds in 2 are quite asymmetric with Te(1)–S(1) = 2.551 (3) Å and Te(1)–S(2a) = 2.873 (3) Å, while Te(1)–C(1) = 2.10 (1) Å. © 1998 John Wiley & Sons, Inc. Heteroatom Chem 9: 615–621, 1998" @default.
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- W1990647575 date "1998-01-01" @default.
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- W1990647575 title "Synthesis and structural characterization of [Te{(SePPh2)2N}2] and [4-MeOPhTe{(SPPh2)2N}]2" @default.
- W1990647575 doi "https://doi.org/10.1002/(sici)1098-1071(1998)9:7<615::aid-hc4>3.0.co;2-1" @default.
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