Preparation and crystallographic characterization of Pd(II) complexes containing imidobis(diphenylthiophosphinato) ligand

Abstract

The reactions of PdCI 2(L-L) [L-L = Ph 2PCH 2PPh 2(dppm), Ph 2PCH 2CH 2PPh 2(dppe) and Ph 2PCH 2CH 2CH 2PPh 2(dppp)] with equivalent amount of (Ph 2P(S)NHP(S)Ph 2)(dppaS 2) gave the complexes [Pd(L-L)(dppaS 2-H)]ClO 4 [L-L = dppm ( 1), dppe ( 2), dppp ( 3)]. The different synthetic route was used for complex 2 by using of Pd(dppe)Cl 2 and K[N(PSPh 2) 2] as starting materials ( 2a). All of these complexes have been characterized 31P{ 1H} NMR, IR and elemental analyses. The complexes 2, 2a and 3 were crystallographically characterized. The coordination geometry around the Pd atoms in these complexes distorted square planar. Six membered dppaS 2-H rings are twist boat conformations in three complexes.