New anionic copper(I) dihalide cyclic guanidinate compounds with H-bonded chelating guanidinium cations

作者：Chiarella Gina M; Melgarejo Doris Y; Fackler John P Jr^*

来源：Inorganica Chimica Acta, 2012, 386: 13-16.

DOI：10.1016/j.ica.2012.01.043

• Copper(I) dihalide cyclic guanidinates
• Acid dependant synthesis of copper(I) compounds
• Guanidine-guanidinium salts
• Chelated H-bonded guanidinium cations

Two new copper(I) dihalide cyclic guanidine salts have been synthesized and characterized structurally, (H(2)hpp) [(Hhpp) CuCl2], 1 and (H(2)hpp) [(Hhpp)CuBr2], 2, where Hhpp = (1,3,4,6,7,8-hexahydropyrimido[1,2-a] pyrimidine). Both compounds are isomorphous, crystallizing in the monoclinic space group P2(1)/c. They exhibit the very unusual feature of a trigonal planar copper(I) center tri-coordinated to a neutral cyclic guanidine with two halides in an anion and a cyclic guanidinium cation H-bonded as a chelate to the halides.

• 出版日期2012-5-15