Bis(pyrazolylethyl)thioether ligation to zinc and cadmium: structural characterization of [S(CH(2)CH(2)pz(Me2))(2)]ZnCl2, [S(CH(2)CH(2)pz(Me2))(2)]CdI2 and [S(CH(2)CH(2)pz(Me2))(2)]Cd(NO3)(2)
P. Ghosh et al., Bis(pyrazolylethyl)thioether ligation to zinc and cadmium: structural characterization of [S(CH(2)CH(2)pz(Me2))(2)]ZnCl2, [S(CH(2)CH(2)pz(Me2))(2)]CdI2 and [S(CH(2)CH(2)pz(Me2))(2)]Cd(NO3)(2), POLYHEDRON, 18(8-9), 1999, pp. 1107-1113
Structural characterization of [S(CH(2)CH(2)pz(Me2))(2)]ZnCl2 by X-ray diff
raction demonstrates that the potentially tridentate [NNS] donor ligand S(C
H(2)CH(2)pz(Me2))(2) does not coordinate via sulfur, but only binds through
the pyrazolyl groups. Furthermore, the ligand does not chelate, but prefer
entially bridges two zinc centers, thereby resulting in a polymeric, helica
l, structure. In contrast to the zinc system, the thioether functionality d
oes bind to cadmium in related derivatives, [S(CH(2)CH(2)pz(Me2))(2)]CdI2 a
nd [S(CH(2)CH(2)pz(Me2))(2)]Cd(NO3)(2). (C) 1999 Elsevier Science Ltd. All
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