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A new two‐dimensional manganese(II) coordination polymer based on thiophene‐3,4‐dicarboxylic acid
Author(s) -
Wang GuiXia,
Shang LiLi,
Li ZhaoHao,
Zhao BangTun
Publication year - 2014
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s205322961401417x
Subject(s) - manganese , thiophene , coordination polymer , dicarboxylic acid , polymer , chemistry , materials science , polymer chemistry , organic chemistry
A novel manganese coordination polymer, poly[(μ 5 ‐thiophene‐3,4‐dicarboxylato)manganese(II)], [Mn(C 6 H 2 O 4 S)] n , was synthesized hydrothermally using 3,4‐thiophenedicarboxylate (3,4‐tdc 2− ) as the organic linker. The asymmetric unit of the complex contains an Mn 2+ cation and one half of a deprotonated 3,4‐tdc 2− anion, both residing on a twofold axis. Each Mn 2+ centre is six‐coordinated by O atoms of bridging/chelating carboxylate groups from five 3,4‐tdc 2− anions, forming a slightly distorted octahedron. The Mn 2+ centres are bridged by 3,4‐tdc 2− anions to give an infinite two‐dimensional layer which incorporates one‐dimensional Mn–O gridlike chains, and in which the 3,4‐tdc 2− anion adopts a novel hexadentate chelating and μ 5 ‐bridging coordination mode. The fully deprotonated 3,4‐tdc 2− anion exhibits unexpected efficiency as a ligand towards the Mn 2+ centres, which it coordinates through all of its carboxylate O atoms to provide the novel coordination mode. The IR spectrum of the complex is also reported.