title: Coordination Polymers of Palladium Bridged by Carboxylate and Dimethylaminoalkylselenolate Ligands.
abstract: Coordination polymers of palladium stabilized by dimethylaminoalkylselenolate and carboxylate ligands are reported. The reaction of [PdCl(SeCH2 CH2 NMe2 )]3 with AgOTf followed by treatment with sodium acetate afforded [Pd(0) Pd(II) 4 (SeCH2 CH2 NMe2 )3 (OAc)3 ](OTf)2 (1) in which one of the Pd atoms is in the zero oxidation state. In the absence of NaOAc, a tetranuclear complex, [Pd(II) 4 (SeCH2 CH2 NMe2 )4 (OTf)](OTf)3 (2), is isolated from the same reaction. Subsequent treatment with NaO2 CR afforded [Pd4 (SeCH2 CH2 NMe2 )4 (O2 CR)4 ] (R=tBu (3) and Ph (4)). The reaction of [PdCl(SeCH2 CH2 CH2 NMe2 )]2 with AgOTf and NaOAc yielded an ionic binuclear complex, [Pd(II) 2 (SeCH2 CH2 CH2 NMe2 )2 (OAc)](OTf) (5). These complexes have been characterized by NMR spectroscopy, crystal structures, and in some cases by X-ray photoelectron spectroscopy, cyclic voltammetry and mass spectrometry. Complexes 1 and 5 are associated through secondary interactions and coordinate bonds, respectively, to generate polymeric structures in the solid state.
authors.affiliation: Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India.
authors.forename: Dilip K
authors.initials: DK
authors.lastname: Paluru
authors.affiliation: Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India. dsandip@barc.gov.in.
authors.forename: Sandip
authors.initials: S
authors.lastname: Dey
authors.affiliation: Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India.
authors.forename: Amey P
authors.initials: AP
authors.lastname: Wadawale
authors.affiliation: Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas, 77842-3012, USA.
authors.forename: Nattamai
authors.initials: N
authors.lastname: Bhuvanesh
authors.affiliation: Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550, Stuttgart, Germany.
authors.forename: Anita
authors.initials: A
authors.lastname: Grupp
authors.affiliation: Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550, Stuttgart, Germany.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Kaim
authors.affiliation: Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India.
authors.forename: Vimal K
authors.initials: VK
authors.lastname: Jain
keywords: NMR spectroscopy; acetate; bridging ligands; coordination polymers; palladium; selenolate