Preparation and crystal structure of the sixteen-atom ring complex di-µ-[glutaraldehyde bis(dimethylhydrazone)]-bis[dichloropalladium(II)]

Abstract
Treatment of [PdCl2(NCPh)2] with glutaraldehyde bis(dimethylhydrazone) gives the stable 16-atom ring binuclear complex [Pd2Cl4{Me2NNCH(CH2)3CHNNMe2}2] in high yield. The crystal structure has been determined. The crystals are Triclinic, with unit-cell dimensions a= 8.660(2), b= 11.909(3), c= 7.407(2)Å, α= 106.20(2), β= 102.75(2), γ= 82.83(2)°, Z= 1, and space group P. Factors affecting the conformation and stability of the complex are discussed and the structure is compared with those of other complexes containing large chelate rings.

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