The synthesis and X-ray structure of cobalt(II) complexes of iminobis(phosphinechalcogenides), [Co{N(XPR 2) 2–X,X′} 2] (X=S or Se; R=Ph or Pr i)
The synthesis and single crystal X-ray structures of the cobalt(II) complexes [Co{N(SPPh 2) 2} 2] 1, [Co{N(SPPr 2 i) 2} 2] 2, [Co{N(SePPh 2) 2} 2] 3 and [Co{N(SePPr 2 i) 2} 2] 4, synthesised by the reaction of cobalt(II) acetate with the sodium salt of the appropriate ligand in methanol are reported...
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Published in | Polyhedron Vol. 18; no. 7; pp. 1077 - 1082 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
OXFORD
Elsevier Ltd
01.01.1999
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | The synthesis and single crystal X-ray structures of the cobalt(II) complexes [Co{N(SPPh
2)
2}
2]
1, [Co{N(SPPr
2
i)
2}
2]
2, [Co{N(SePPh
2)
2}
2]
3 and [Co{N(SePPr
2
i)
2}
2]
4, synthesised by the reaction of cobalt(II) acetate with the sodium salt of the appropriate ligand in methanol are reported. All four compounds consist of discrete, monomeric molecules in which the ligands are found to be bidentate, conferring a distorted tetrahedral co-ordination geometry around the cobalt centres. The resulting MX
2P
2N rings are found to be puckered. The
31P NMR studies of compounds
1–
3 reveal one peak for each complex shifted upfield of the standard, whereas that for
4 is found downfield. The synthesis of NH(SePPr
2
i)
2}
2 is reported for the first time. |
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ISSN: | 0277-5387 |
DOI: | 10.1016/S0277-5387(98)00397-0 |