Chemistry Letters, Vol.38, No.11, 1074-1075, 2009
A S-Bridged (CoCuCoIII)-Cu-III-Co-II Trinuclear Complex with an Unusual Copper(II) Ion Bound by Four Aliphatic Thiolato Donors
Treatment of Delta Delta-[Ni-II{Co-III(aet)(2)(R,R-chxn)}(2)](ClO4)(4) (Haet = 2-aminoethanethiol, R,R-chxn = 1R,2R-cyclohexanediamine) with Cu(ClO4)(2) in water gave Delta Delta-[Cu-II{Co-III(aet)(2)(R,R-chxn)}(2)](ClO4)(4) (1), in which a central copper(II) ion is surrounded by four aliphatic thiolato donors in a twisted square-planar geometry. Complex 1 was converted to Delta Delta-[(CuCl)-Cl-I{Co-III(aet)(2)(R,R-chxn)}(2)](ClO4)(2) (2) by treatment with NaCl in water, while 2 was reverted back to 1 by treatment with NaClO4.