Crystal structure of catena-poly[[[tri­aqua­strontium]-di-μ2-glycinato] dibromide]

Acta Crystallographica Section E: Crystallographic Communications

Thamotharan, S.¹  Revathi, P.²  Balakrishnan, T.²  Ramamurthi, K.³ 

[1]Biomolecular Crystallography Laboratory, Department of Bioinformatics, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613 401, India

[2]Crystal Growth Laboratory, PG and Research Department of Physics, Periyar EVR College (Autonomous), Tiruchirappalli 620 023, India

[3]Crystal Growth and Thin Film Laboratory, Department of Physics and Nanotechnology, SRM University, Kattankulathur 603 203, India

关键词: CRYSTAL STRUCTURE;    GLYCINE;    STRONTIUM;    N/O-H...BR/O HYDROGEN BONDS;   

DOI  :  10.1107/S2056989015012219

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

In the title coordination polymer, {[Sr(C2H5NO2)2(H2O)3]Br2}n, the Sr2+ ion and one of the water mol­ecules are located on twofold rotation axes. The alkaline earth ion is nine-coordinated by three water O atoms and six O atoms of the carboxyl­ate groups of four glycine ligands, two in a chelating mode and two in a monodentate mode. The glycine mol­ecule exists in a zwitterionic form and bridges the cations into chains parallel to [001]. The Br− counter-anions are located between the chains. Inter­molecular hydrogen bonds are formed between the amino and carboxyl­ate groups of neighbouring glycine ligands, generating a head-to-tail sequence. Adjacent head-to-tail sequences are further inter­connected by inter­molecular N—H⋯Br hydrogen-bonding inter­actions into sheets parallel to (100). O—H⋯Br and O—H⋯O hydrogen bonds involving the coordinating water mol­ecules are also present, consolidating the three-dimensional hydrogen-bonding network.

【 授权许可】

CC BY