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'Copper Complexes' in keywords Facet   Publication Year 1999  [X]
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1999[X]
1Author    Qianfeng Zhanga, Jinxi Chena, Maochun Hongb, Xinquan Xina, Hoong-Kun FuncRequires cookie*
 Title    Crystal and Molecular Structure of the Copper(I)-thiolate-selenide Complex [Ph4P][Cu(SeS2CNC4H8)(S2CN2C4H8)] with an Unusual Se-S Bond  
 Abstract    Reaction of a DMF solution of Cu(S^CNC4 H8) with [Ph4 P]2 [WSe4 ] affords [Ph4 P b[W Se4 -(CuS2CNC4H8)3 ] (1) and [Ph4P][Cu(SeS2 CNC4 H8)(S2 CN2 C4 H 8)] (2) in which a Se atom from the decomposition of the W Se4 2~ anion has reacted with the pyrrolidyldithiocarbamate (C4 H8dtc) ligand anion to form the new ligand anion SeSiC N C +H s'. Complex 2 crystallizes with four formula units in the monoclinic space group P2\/c in a cell of dimensions a = 10.5824(2), b = 18.7575(3), c = 18.3268(4) A and ß = 109.0980(10)°. 6055 independent reflections above background were measured with a diffractometer and the structure was re­ fined anisotropically to R =0.073. The anion contains a three-coordinated copper(I) atom. The C4 H8 dtcö ligand is bonded to the Cu+ cation in a terminal fashion, while SeS2 CNC4 H8~ chelates the Cu+ cation. The Se-S bond length is 2.231 (4) A. 
  Reference    Z. Naturforsch. 54b, 1313—1317 (1999); received April 4 1999 
  Published    1999 
  Keywords    Crystal Structure, Copper Complex, Selenium Complex, Thiolate Ligand 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1313.pdf 
 Identifier    ZNB-1999-54b-1313 
 Volume    54 
2Author    Dietrich Gudata, AndreasW. Holderberg3, Nikolaus Korberb, Martin Nieger3, Martin Schrott3Requires cookie*
 Title    Bis-phosphonio-isophosphindolide Copper Complexes  
 Abstract    Bis-triphenylphosphonio-isophosphindolide salts 1[X] react with Cu(I)-halides CuX to give isolable products of composition [(l)Cu2X3]. X-ray crystal structure analyses confirmed that for X = Br, Cl dinuclear complexes [(/y-1)(/i-X)Cu2X2] with /i2j;'(P)-bridging cations 1 are formed, while for X = I a solid phase containing a salt (l^lC u*^] and a complex [(l^ C u .^ ] with a terminal ?/(P)-coordinated ligand 1 was obtained. The bonding parameters in the two types of complexes suggest that l i s a hybrid between a phosphenium cation and a phospholide anion whose 7T-system is less nucleophilic than the phosphorus lone-pair.31P NMR studies revealed that in solution in all cases binuclear complexes [(l)Cu2X3] are in dynamic equilibrium with small amounts of mononuclear species and free 1. The same equilibria were detected in the system l[OTf]/CuOTf. NMR studies of ligand exchange reactions indicated that the stability of complexes [(l)Cu2X3] increases in the order X = OTf < 1 < Br, Cl, and titration of [(l)Cu2Bn] with EuNBr allowed to determine the equilibrium constant of the complex formation reaction. 
  Reference    Z. Naturforsch. 54b, 1244—1252 (1999); received July 6 1999 
  Published    1999 
  Keywords    Phosphorus Heterocycles, Copper Complexes, Crystal Structure, '' P NMR Data 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1244.pdf 
 Identifier    ZNB-1999-54b-1244 
 Volume    54