Issue 11, 1987

Mixed-metal phosphinito complexes of platinum(II) and palladium(II) with lanthanide and actinide elements. The single-crystal X-ray structure of [UO2(OH2){(OPPh2)2Pd(S2CNEt2)}2]

Abstract

The synthesis of the phosphinito-bridged heteronuclear complexes [M′{(OPPh2)2M(S2CNR2)}n](M′= CeIII, EuIII, SmIII, or NdIII, n= 3; M′= ThIV, n= 4) and [UO2(OH2){(OPPh2)2M(S2CNR2)}2] by reaction of [M(S2 CNR2){(Ph2PO)2H}](M = Pd or Pt, R = Et or Pri) with lanthanide and actinide salts is described. [UO2(OH2){(OPPh2)2 Pd (S2CNEt2)}2] crystallises in the monoclinic space group C2/c with a= 26.285(8), b= 13.870(8), c= 21.068(6)Å, β= 90.042(8)°, and Z= 4. The single-crystal X-ray structure of the complex shows a distorted pentagonal bipyramidal uranium(VI) ion lying on a crystallographic two-fold axis with the oxo ligands of the trans-UO2 moiety, U[double bond, length half m-dash]O = 1.774(7)Å, occupying apical sites. The structure confirms co-ordination of two [(OPPh2)2Pd(S2CNEt2)] moieties around UVI. The four phosphinito ligands bridge UVI and the two PdII centres with U–O = 2.289(7) and 2.342(6)Å and Pd–P = 2.2642(24) and 2.2455(23)Å. An aqua ligand, U–O = 2.526(8)Å, completes the co-ordination sphere around the uranyl centre. The PdII centres are essentially planar, each being bound to two phosphinito and one bidentate dithiocarbamate ligand, Pd–S = 2.386(3) and 2.373(3)Å.

Article information

Article type
Paper

J. Chem. Soc., Dalton Trans., 1987, 2853-2856

Mixed-metal phosphinito complexes of platinum(II) and palladium(II) with lanthanide and actinide elements. The single-crystal X-ray structure of [UO2(OH2){(OPPh2)2Pd(S2CNEt2)}2]

P. M. Veitch, J. R. Allan, A. J. Blake and M. Schröder, J. Chem. Soc., Dalton Trans., 1987, 2853 DOI: 10.1039/DT9870002853

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