Synthesis and Crystal Structure of a Tetranuclear Cluster [(η5-C5Me5)WS3Cu3Br2(PPyPh2)2]

Abstract

Abstract: Reaction of [PPH₄]₂[(η⁵-C₅Me₅)WS₃(CuBr)₃]₂ in CH₃CN with PPyPh₂ in a molar ratio of 1∶4 gave rise to red crystals of [(η⁵-C₅Me₅)WS₃Cu₃Br₂(PPyPh₂)₂]. It was characterized by elemental analysis, IR, UV-Vis and ¹H NMR spectroscopy and X-ray diffraction. It crystallizes in a triclinic system with space group P1 and unit cell parameters a=1.5459(7) nm, b=1.620(1) nm, c=1.0180(2) nm, α=94.18(3)°, β=97.38(3)°, γ=111.8(4)°, Z=2, R=0.031. The structure consists of a distorted WS₃Cu₃Br cubane where the Cu(3)—Br(1) bond is broken. Cu(1) and Cu(2) atoms adopt a distorted tetrahedral geometry coordination while Cu(3) assumes an approximately trigonal planar geometry. W—Cu(1), W—Cu(2) and W—Cu(3) distances are 0.27041(9), 0.27327(8), and 0.26785(9) nm, respectively.

Key words: Tungsten cluster, Copper cluster, Sulfide cluster, Crystal structure

CLC Number:

O612.6

TrendMD:

XU Qing-Feng, CHEN Jin-Xiang, LIU Quan, JI Shun-Jun, LANG Jian-Ping, SHEN Qi. Synthesis and Crystal Structure of a Tetranuclear Cluster [(η⁵-C₅Me₅)WS₃Cu₃Br₂(PPyPh₂)₂][J]. Chem. J. Chinese Universities, 2002, 23(9): 1641.

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Synthesis and Crystal Structure of a Tetranuclear Cluster [(η⁵-C₅Me₅)WS₃Cu₃Br₂(PPyPh₂)₂]

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