Stereochemical Aspects of Tellurium Complexes with Sulfur Ligands: Molecular Compounds and Supramolecular Associations

Haiduc, Ionel; King, R. B.; Newton, M. G.

doi:10.1021/cr00026a002

Cited by 114 publications

(41 citation statements)

References 30 publications

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“…The shifts are smaller than those-observed for the methyl germanium analogues and considerably smaller than those observed for analogous dimethyltellurium derivatives where AP ranged from 11 to 16 ppm downfield (17). Although the dithiophosphate groups had trast, in the tin and tellurium analogues, the dithiophosphate groups undergo exchange in solution to bring about equivalence for all atoms in the groups, presumably by interchanging the bonded and aniso-bonded sulfur positions, which is consistent with the general tendency for dithio ligands to be bidentate when attached to tin and tellurium (34,35). Germanium is apparently unique in terms of size, affinity to sulfur, or both, so that exchange does not occur and as a result the nonequivalence is maintained in solution.…”

Section: Compoundsupporting

confidence: 64%

A study of a variety of O,O-alkylene dithiophosphate derivatives of triphenyl-and diphenylgermane. Crystal structures of and

Drake¹,

Mislankar²,

Ratnani³

et al. 1995

Can. J. Chem.

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The O,O-alkylene dithiophosphate derivatives of triphenyl- and diphenylgermane, [Formula: see text] [Formula: see text] [Formula: see text] [Formula: see text] [Formula: see text] and [Formula: see text] have been prepared and characterized by infrared, Raman, and 1H, 13C, and 31P NMR spectroscopy, mass spectrometry, and, in three cases, X-ray crystallography. [Formula: see text] 1, crystallizes as monoclinic in the space group P21/a (No. 14) with the cell parameters a = 12.868(5) Å, b = 11.354(4) Å, c = 17.207(4) Å, β = 95.42(2)°, V = 2502(1) Å3, Z = 4, R = 0.0640, and Rw = 0.0585. [Formula: see text] 2, crystallizes as orthorhombic in the space group Pbca (No. 61) with the cell parameters a = 23.007(4) Å, b = 16.840(4) Å, c = 12.068(3) Å, V = 4657(3) Å3, Z = 8, R = 0.0502, and Rw = 0.0329. [Formula: see text] 3, crystallizes as monoclinic in the space group C2/c (No. 15) with the cell parameters a = 35.48(2) Å, b = 9.275(5) Å, c = 20.78(1) Å, β = 120.93(3)° V = 5866(5) Å3, Z = 8, R = 0.0674, and Rw = 0.0562. As with their methylgermanium analogues, the environment about germanium is essentially that of a distorted tetrahedron, with the terminal sulfur atoms oriented towards germanium rather than away from it, in contrast with analogous noncyclic dithiophosphatogermanes. The substituents on the atoms in both the five- and six-membered rings maintain their nonequivalence in solution, in contrast with tin analogues. Keywords: structure, germanium, diphenyl, triphenyl, cyclic dithiophosphates

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Section: Compoundsupporting

confidence: 64%

A study of a variety of O,O-alkylene dithiophosphate derivatives of triphenyl-and diphenylgermane. Crystal structures of and

Drake¹,

Mislankar²,

Ratnani³

et al. 1995

Can. J. Chem.

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“…In organotellurium(IV) compounds viz. organotellurium dithiocarbamates (formed with ligands containing 1,1-dithio group including N,N-dialkyl dithiocarbamates) dimeric or polymeric structures were observed due to supramolecular associations through Te---S secondary bonds as discussed by King et al [21]. A review by Haiduc & Zukerman [22] gives an account of various supramolecular assemblies (formed through secondary bonds) in organotellurium chemistry by explaining the active participation of Te---Te, Te---N, Te---O, Te---S and Te---X (X= Cl, Br, I) secondary non-covalent interactions.…”

Section: Supramolecular Organotellurium Compoundsmentioning

confidence: 93%

Organotellurium Compounds: From Molecular to Supramolecular Chemistry

Bajpai¹,

Shamsi²

2018

Asian J. Chem.

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“…This secondary bonding is weaker than in the corresponding iodide o[the Te--Br and Te.. it is somewhat stronger than we expected. We previously believed that the relatively short secondary intermolecular Te.-.I contacts had a shortening effect upon the corresponding Te...Br contacts in the mixed complex (3) (Husebye, Kudis & Lindeman, 1996a (Husebye, 1983;Haiduc, King & Newton, 1994). The intramolecular Te--Br bond length in (1) [2.943 (1).4.]…”

Section: Commentmentioning

confidence: 99%