Poly[(mu6-4-amino-3,5,6-trichloropyridine-2-carboxylato)aquacaesium

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Poly[(mu6-4-amino-3,5,6-trichloropyridine-2-carboxylato)aquacaesium

Authors
Publisher
Wiley & Blackwell Publishing
Keywords
  • Crystal Structure
  • 030000 Chemical Science
  • Caesium Complex
  • Metal-Herbicide Complex
  • Tordon
  • Picloram

Abstract

In the structure of the title complex, [Cs(C6H2Cl3N2O2)(H2O)]n, the caesium salt of the commercial herbicide picloram, the Cs+ cation lies on a crystallographic mirror plane, which also contains the coordinating water molecule and all non-H atoms of the 4-amino-3,5,6-trichloropicolinate anion except the carboxylate O-atom donors. The irregular CsCl4O5 coordination polyhedron comprises chlorine donors from the ortho-related ring substituents of the picloramate ligand in a bidentate chelate mode, with a third chlorine bridging [Cs-Cl range 3.6052 (11)-3.7151 (11) Å] as well as a bidentate chelate carboxylate group giving sheets extending parallel to (010). A three-dimensional coordination polymer structure is generated through the carboxylate group, which also bridges the sheets down [010]. Within the structure, there are intra-unit water O-HOcarboxylate and amine N-HNpyridine hydrogen-bonding interactions.

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