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    STUDIA CHEMIA - Issue no. 1 / 2007  
         
  Article:   NEW COPPER(I) AND COPPER(II) TETRAORGANODICHALCOGENOIMIDODIPHOSPHINATES. CRYSTAL AND MOLECULAR STRUCTURE OF THE FIRST MONOTHIOIMIDODIPHOSPHINATO COPPER(I) COMPLEX, CU4[(OPME2)(SPPH2)N]4∙6CH2CL2.

Authors:  ADINA ROTAR, OVIDIU MOLDOVAN, S.I. FARCAS, RICHARD A. VARGA, CRISTIAN SILVESTRU, ANCA SILVESTRU. 		 
       
         
  Abstract:   New copper complexes containing dichalcogenoimidodiphosphinato ligands, i.e. Cu4[(OPMe2)(SPPh2)N]4 (1), (Ph3P)2Cu[(SPMe2)(SPPh2)N] (2) and Cu[(SPMe2)(SPPh2)N]2 (3), were prepared and characterized. The molecular structure of the complex 1·6CH2Cl2 was established by single-crystal X-ray diffraction. The crystal contains discrete tetranuclear units with a distorted Cu4 tetrahedron [Cu···Cu 2.702(3) and 3.060(2) Å] and bimetallic triconnective monothio ligands [Cu-S 2.258(3), 2.267(4) Å; Cu-O 1.969(9) Å]. All four copper centers are tricoordinated (CuOS2 core), in an almost planar, trigonal arrangement.  
         
     
         
         
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