DIRECT SYNTHESIS OF LEAD(II) COMPLEXES OF 2-DIMETHYLAMINOETHANOL

A number of new lead(II) complexes of composition PbLX, where L is the 2-dimethylaminoethoxo ligand and X = Cl, Br, I, NCS and NO3, have bee n prepared. The crystal structure of PbLBr has been determined by X-ra y methods. (PbLBr)3 is monoclinic, space group C2/c, with a = 28.573, b = 9.249, c = 19.104 angstrom, gamma = 107.72(l)-degrees, V = 4805.4 angstrom3, Z = 8 d(calc) = 3.11 g cm-3, F(000) = 3984, mu = 260.9 cm-1 (MoKalpha). The structure was refined by least-squares methods to a f inal R factor of 0.024 for 2433 reflections having I>3sigma(I). Trimer , (PbLBr)3, are joined by bridging bromine atoms in endless ''ribbons' ' along [010]. The 2-dimethylaminoethoxo group is coordinated via oxyg en and nitrogen atoms.