78363-37-8Relevant articles and documents
Thioureido complexes of copper(I), copper(II) and copper(III). Crystal structure of the copper(I) complex >>6
Willemse, J.,Bosman, W. P.,Noordik, J. H.,Cras, J. A.
, p. 240 - 243 (2007/10/02)
Deprotonated N-phenyl,N',N'-dialkylthiourea (PhtuR2) complexes of Cu(I) and Cu(II) have been isolated and the existence of a Cu(III) complex inferred from electrochemical measurements.The crystal structure of Cu(I)> (space group P1/, Z=24, a=10.487(9), b=28.961(8), c=29.579(12) Angstroem, α=120.72(3), β=103.69(5), γ=83.14(4) deg) revealed 4 hexameric units per unit cell.The metals form a distorted octahedron; the ligands are situated outside six of the faces of this octahedron.The copper coordination is threefold planar; a N atom is linked to one Cu and the S atoms to two Cu atoms.The Cu-Cu distances exclude strong metal-metal interactions.ESR measurements on Cu(II)(PhtuBu2)2 suggest a planar coordination around Cu with the N atoms in trans-position.Cyclic voltamograms and differential pulse polarograms show the one-electron oxidation, Cu(II)(PhtuR2)2 -> Cu(III)(PhtuR2)2(1+) + e.The Cu(III) complex is only stable on the electrochemical time scale (scan rate 100 mV s-1).