Synthesis and characterization of some diphenylcyclopentadienyltin carboxylates

1230-1232A new series of spin-paired hexa-coordinate mixed ligand complexes of Cr(l) of the type, [Cr(NO)(CN)2 (L-L) (H2O)] (where L-L=bidentate pyrazoline-5-one derivatives) has been synthesized. The complexes have b en prepared by the reaction of potassium pentacyanonitrosylchromate(I) monohydrate, K3[Cr(NO)(CN)5].H2O, with the corresponding pyrazoline-5-one derivatives (L-L) in aqueous acetic acid medium. Pyrazoline-5-one derivatives act as bidentate ligands by coordinating through both the carbonyl oxygens