Hydrothermal synthesis and structure of an unprecedented layered Cd-citrate complex containing helical chains

Abstract: An exploration of the cadmium-citrate system under hydrothermal conditions, has led to the isolation of a novel framework [Cd3(H2O)2(C6H5O7)2]n 1. This compound features a novel 2D undulated sheet containing infinite double-stranded helical chains, which is unique among metal-citrate system identified so far. Crystal data for compound 1: Monoclinic, Space group P2 1 /c, a=6.0974(12) Å, b=15.271(3)Å, c=9.781(2)Å, β=102.74(3)°, V=888.3(3)Å3, Z=2. Other characterizations by elemental analysis, IR and TG are also described. [Copyright &y& Elsevier]