Preparation and Single-Crystal Characterization of (i)()Pr(2)P(S)NHP(S)(i)()Pr(2) and Homoleptic [(i)()Pr(2)P(S)NP(S)(i)()Pr(2)](-) Complexes of Zinc, Cadmium, and Nickel
1 Zeneca Specialties Division, Blackley, Manchester M9 8ZS, U.K., Department of Chemistry, Loughborough University, Loughborough, Leics LE11 3TU, U.K., and Department of Chemistry, Imperial College, London SW7 2AY, U.K.