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Potassium cobaltates K+CoLsL' -(L = Me 3 P, L' = N 2 , olefin) react with SnCl(C 6 H 5 ) 3  or GeBr(CeH 5 ) 3  to give tetracoordinate complexes containing Co-Sn and Co-Ge bonds. Crystal and molecular structures of two single crystals were determined. They show tetrahedral molecules Co[Sn(C 6 H 5 ) 3 ][P(CH 3 ) 3 ] 3  in different packing order. Both tetra-coordinate compounds take up small ligands thereby completing their 18-electron valence shells in compounds Co[E(C 6 H 5 ) 3 ]L 3 L' (L = (CH 3 ) 3 P; E = Ge, L' = CO; E = Sn, L' = CO, C 2 H 4 ). A sparingly soluble paramagnetic adduct Co[Sn(C 6 H 5 ) 3 ]L 4  is believed to contain a tin-bonded phosphane.

zeitschrift für naturforschung b

Triphenylstannyltris(trimethylphosphan)cobalt - Molekülstruktur und Eigenschaften / Triphenylstannyltris(trimethylphosphane)cobalt -Molecular Structure and Properties