Lewis base adducts of lead(II) iodide. Novel chain structures of lead(II) iodide with 2-pyrrolidone and ethyleneurea

Abstract

Crystals of Pbi 2 (pyd) 2 and Pbi 2 (enu) 2 (pyd=2pyrrolidone; enu=ethyleneurea) were obtained by cooling their saturated N-methylformamide solution. The compoQ~ds crystallize in space group ~c2 1 n with a=l3.423(l), b=l5.662(l), c=6.6898(6) A and Z=4, and with a=l3.287(l), b=l5.458(2), c=