Die Kristall- und MolekülStruktur des Bis-(cis-1-mercapto-2-p-brombenzoyl-äthylen)-nickel(II)

Crystal and Molecular Structure of Bis(cis-1-mercapto-2-p-brominebenzoylethylen)nickel(II) From a x-ray analysis of bis(cis-1-mercapto-2-p-brominebenzoyl-ethylen)-nickel(II) distances Ni? S and Ni? O of 2.14 Å and 1.88 Å, respectively, follow for the planar square nickel complex NiS₂O₂]. The sulfur atoms are arranged in cis-position. The C? C distance in the sulfur neighbourhood is shortened, but the difference between the two C? C bonds in the chelate ring is less than in bis(thioisobutyrylacetonato)nickel(II). This indicates a strenthening of the quasiaromatic character in the chelate system of the investigated structure.