Syntheses, Structures, and Magnetic Properties of Di-μ3-Chloride-Bridged Tripalladium Compounds, [Pd3(μ3-Cl)2(HqnS)6]Cl2 (HqnS = Quinoline–2(1H)–thione) and [Pd3(μ3-Cl)2(Et2dtc)2(PPh3)2]·C6H6(Et2dtc = N, N′–Diethyldithiocarbamate)

• Published in: Bulletin of the Chemical Society of Japan Vol. 73; no. 3; pp. 651 - 655
• Main Authors: Sugimoto, Kunihisa, Kuroda-Sowa, Takayoshi, Goto, Tamotsu, Maekawa, Masahiko, Munakata, Megumu
• Format: Journal Article
• Language: English
• Published: The Chemical Society of Japan 01.03.2000
• ISSN: 0009-2673; 1348-0634
• DOI: 10.1246/bcsj.73.651

Two triangular tripalladium compounds, [Pd3(μ3-Cl)2(HqnS)6]Cl2 (1) (HqnS = quinoline–2(1H)–thione), and [Pd3(μ3-Cl)2(Et2dtc)2(PPh3)2]·C6H6 (2) (Et2dtc = N, N′-diethyldithiocarbamate anion), were prepared. Their single crystal X-ray structure analyses revealed they have a similar trigonal bipyramidal framework of Pd3(μ3-Cl)2 with two chlorine atoms in apical positions. Each Pd atom in all clusters has two additional coordination sites to establish a square planar cis-PdL2(μ3-Cl)2 geometry. In compound 1, six sulfur atoms of six HqnS ligands with thion form are coordinated to the vacant sites of the Pd3(μ3-Cl)2 core. Two coordination sites of one of the three Pd atoms in 2 are occupied by two triphenylphosphines and those of the other two are coordinated by two S atoms of Et2dtc. Although both compounds have 50 valence electrons, only 1 shows paramagnetic behavior. Crystallographic data are as follows. 1: Pd3Cl4S6N6C54H42, triclinic, P1- a = 14.988(5), b = 17.328(3), c = 12.642(1) Å, α = 93.61(1), β = 96.06(2), γ = 71.79(2)°, V = 3099(1) Å3, and Z = 2. 2: Pd3Cl2P2S4N2C52H56, monoclinic, P21, a = 12.278(5), b = 17.426(6), c = 12.630(3) Å, β = 94.65(3)°, V = 2693(2) Å3, and Z = 2.