Syntheses and characterization of one-dimensional antimony(III) diphosphonates: [NH3(CH2)(n)NH3][Sb{CH3C(O)(PO3)(2)}] (n=4, 5)

摘要

This paper describes the hydrothermal syntheses and characterization of two antimony(III) diphosphonates: [NH3(CH2)(n)NH3]Sb{CH3C(O)(PO3)(2)} [n=4 (1), 5 (2)]. The two compounds are isostructural based on their XRD measurements. Single-crystal structure determination of compound 1 revealed a one-dimensional linear chain structure where the distorted {SbO5E} octahedra (E is the lone pair electrons occupying an axial position) are corner-shared by (CPO3} tetrahedra. The protonated diamines are located between the chains, with their nitrogen atoms locked by the hydrogen bonds with the phosphonate oxygens. Crystal data for 1: orthorhombic, apace group Prima, a = 13.426(4), h = 17.149(4), c=5.4496(14) Angstrom, V= 1254.7(6) Angstrom(3), Z=4. (C) 2002 Elsevier Science (USA). [References: 23]