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Catena-Poly[[[aqua-(glycine-?O)lithium]-?-glycine-?(2) O:O'] bromide].

ABSTRACT: In the title coordination polymer, {[Li(C2H5NO2)2(H2O)]Br} n , the Li(+) cation is coordinated by three carboxyl-ate O atoms of zwitterionic glycine mol-ecules and by a water mol-ecule, forming a distorted tetra-hedral geometry. One of the two glycine mol-ecules bridges neighbouring complexes, forming an infinite chain parallel to the c axis. Polymeric chains are further linked by extensive hydrogen bonds involving the Br(-) anions and glycine and water mol-ecules, producing a three-dimensional network.

SUBMITTER: Balakrishnan T

PROVIDER: S-EPMC3588392 | biostudies-literature | 2013 Jan

REPOSITORIES: biostudies-literature

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catena-Poly[[[aqua-(glycine-κO)lithium]-μ-glycine-κ(2) O:O'] bromide].

Balakrishnan T T Ramamurthi K K Jeyakanthan J J Thamotharan S S

Acta crystallographica. Section E, Structure reports online 20121219 Pt 1

In the title coordination polymer, {[Li(C2H5NO2)2(H2O)]Br} n , the Li(+) cation is coordinated by three carboxyl-ate O atoms of zwitterionic glycine mol-ecules and by a water mol-ecule, forming a distorted tetra-hedral geometry. One of the two glycine mol-ecules bridges neighbouring complexes, forming an infinite chain parallel to the c axis. Polymeric chains are further linked by extensive hydrogen bonds involving the Br(-) anions and glycine and water mol-ecules, producing a three-dimensional ...[more]

PMID: 23476353

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Project description:The title coordination polymer, [Li(2)(C(8)H(2)N(2)O(8))(H(2)O)(5)](n) contains two symmetry-independent Li(+) ions; one is coordin-ated by five water O atoms, the other by an O,N,O'-tridentate doubly deprotonated pyrazine-2,3,5,6-tetra-carboxyl-ate ligand and two water O atoms. Water mol-ecules bridge adjacent Li(+) ions into ribbons propagating in [100]; an alternative analysis of the structure considers it to contain alternating [Li(C(8)H(2)N(2)O(8))(H(2)O)(2)](-) anions and [Li(H(2)O)(3)](+) cations. In the polymeric model, both lithium ions show distorted trigonal-bipyramidal coordination geometries. Within the ligand, the carboxyl H atoms participate in short, almost symmetric O⋯H⋯O hydrogen bonds in which the non-coordinated carboxyl-ate O atoms are donors and acceptors. In the crystal, the ribbons inter-act via a network of O-H⋯O hydrogen bonds in which the coordinated water mol-ecules act as donors and ligand carboxyl-ate O atoms as acceptors.

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catena-Poly[[aqua-(2-iodo-benzoato-κO)cobalt(II)]-μ-aqua-μ-2-iodo-benzoato-κ(2)O:O'].

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catena-Poly[[tetra-aqua-copper(II)]-μ-tri-thionato-κO:O'].

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| S-EPMC3914040 | biostudies-literature

catena-Poly[[tetra-aqua-μ-aqua-bis-(μ(4)-pyrimidine-2-carboxyl-ato)tetra-lithium] dichloride].

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catena-Poly[[[tetra-aqua-samarium(III)]-di-μ-isonicotinato-κO:O'] chloride].

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| S-EPMC2914939 | biostudies-literature

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