Homo- and hetero-, bi- and tri-nuclear palladium(II) and platinum(II) complexes containing single bridging chalcogenolate of a metallo-ligand, [MCl(ECH2CH2NMe2)(PR3)] (M=Pt, Pd; E=Se, Te)

Crystal Structure of [Pt3Cl3(.MU.-SeCH2CH2NH2)2(PPr3)3]Cl

“…The molecule is comprised of three square planar platinum The Pt-Se distances vary between 2.4057(14) and 2.4630(16)Å, and are well within the range reported for platinum selenolate complexes. 3,4 The Pt-P distances (~2.24 Å) are similar, and are as expected. 5 The Pt-Cl distance (~2.4 Å) are slightly longer than that reported 5…”

“…The terminal metal squares have similar ligating atoms. 2,3 We have isolated a trinuclear platinum complex where all three platinum atoms have different ligating environments.…”

“…To an acetone solution (20 cm 3 ) of [Pt2Cl2(m-Cl)2(PPr3)2] (268 mg, 0.31 mmol) was added a freshly prepared solution of NaSeCH2CH2NH2 (obtained from (H2NCH2CH2Se)2•2HCl (125 mg, 0.39 mmol) and NaBH4 (30 mg, 0.79 mmol) in 3 cm 3 of water followed by neutralization with NaHCO3 (66 mg, 0.79 mmol) with vigorous stirring which continued for 2 h. The solvents were evaporated under a vacuum and the residue was extracted with acetone, and then filtered. The filtrate was concentrated to 3 cm 3 Intensity data were collected by 2q/w scans at 298 K using a Rigaku AFC7S four-circle diffractometer with Mo-Ka radiation (l = 0.71069 Å), and were corrected for Lorenz and polarization effects. A structure solution was obtained by a direct method using SIR-92, and full-matrix least squares on Fo 2 with SHELXL97, using WINGX software.…”

Syntheses of Pd(ii)/Pt(ii) complexes with non-chelating 4-pyridylselenolate ligand ranging from mononuclear to macrocyclic structures and their utility as catalysts in Suzuki C–C coupling reaction

“…1,2 There has been several obvious reasons for this sustained interest. These include their relevance in homogenous catalysis, 3 designing metal complexes with new structural motifs, 4,5 suppressing polymerization of metal precursors used in CVD, 6 etc.…”

Nickel, palladium and platinum

“…67 Bi-and tri-nuclear Pd (and analogous Pt) complexes [PdCl(E(CH 2 ) 2 NMe 2 )(PR 3 )PdCl 2 (PR 3 )] and [{PtCl(E(CH 2 ) 2 NMe 2 )(PR 3 )} 2 PdCl 2 ] [E = Se, Te; R = Et, n Pr] have also been prepared. 68 Two research groups have reported three new Pd compounds, PdSeO 3 , PdSe 2 O 5 , and Na 2 Pd(SeO 4 ) 2 , containing selenium oxoanions of both Se(IV) and Se(VI), prepared under mild hydrothermal conditions. 69 Square-planar [Pd(IO 3 ) 4 ] 2anions have also been investigated for their ability to form polar and centrosymmetric architectures.…”