Syntheses and structural characterization of eight inorganic-organic hybrid solids based on N-Brønsted bases and halometallates of Zn, Cu, Sb and Bi

Abstract

Eight organic-inorganic hybrid salts [(HL1)(SbCl₄)] (1) (L1 = N,N-dimethylbenzylamine), [(HL2)₂(ZnCl₄)] (2) (L2 = 4-chlorobenzylamine), [(HL2)(L2)(CuCl₃)(H₂O)₂] (3), [(HL3)₂(Sb₂OCl₆)] (4) (L3 = quinoline), [(HL4)₄(Bi₂Cl₁₀)] (5) (L4 = 2-methylquinoline), [(HL5)(SbCl₄)] (6) (L5 = 5,7-dimethyl-1,8-naphthyridine-2-amine), [(H₂L6)(SbCl₅)] (7) (L6 = 3,6-bis(imidazol-1-yl)pyridazine) and [(H₂L7)₂(CuBr₄)₂] · 7H₂O (8) (L7 = di(2-benzimidazol-1-ylethyl)ether) were prepared and characterized by IR, XRD, EA and TG analysis. XRD analysis told that all of the complexes were 3 D net built from non-covalent bonds from the cations and the halometallates. The aryl rings of the cations in all of the compounds are essentially planar. The H₂O also had crucial role in structure extension in 3 and 8. Extensive intermolecular interactions have been used in the self-assembly of diverse motifs, ranging from strong N-H···X (X = Br, Cl), N-H···O, N-H···N, O-H···O, O-H···Br H-bonds to weak CH₂···O, CH₃-Cl/CH₂-Cl/CH-Cl, Cl-Cl, O-Br, CH₃-π, CH₂-π, Cl-π and π-π associations. The arrangements of the anions and cations in the solid are ruled not only by the size and symmetry of the cations, but also by the non-covalent bonds in the crystal structures.

Keywords:

• Crystal structure
• N-Brønsted bases
• halometallates
• inorganic–organic hybrid

Additional information

Funding

This research was supported by Zhejiang Provincial Natural Science Foundation of China under Grant No. LY14B010006, the National Training Programs of Innovation and Entrepreneurship of China for Undergraduates under Grant No. 201913283001, and the Jiyang 533 project for Shouwen Jin.