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Crystal structure of poly[[μ2-di-aqua-di-aqua-μ2-l-proline-κ(2) O:O'-strontium] dibromide].

ABSTRACT: In the title coordination polymer, {[Sr(C5H9NO2)(H2O)4]Br2} n , the proline mol-ecule exists in a zwitterionic form with one of the ring C atoms disordered over two sites [site-occupancy factors = 0.57 (6):0.43 (6)]. The Sr(II) ion is nine-coordinated by six water O atoms, two monodentate and two μ2-bridging, and three carboxyl-ate O atoms of the proline ligands, with two bridging [Sr-O range = 2.524 (4)-2.800 (5) Å]. In the crystal, there is no direct inter-action between the proline mol-ecules. However, the proline and water mol-ecules associate with the bromide counter-anions through a number of inter-molecular O-H⋯Br and N-H⋯Br hydrogen-bonding inter-actions, giving a three-dimensional supra-molecular structure.

SUBMITTER: Sathiskumar S

PROVIDER: S-EPMC4647404 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature

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Crystal structure of poly[[μ2-di-aqua-di-aqua-μ2-l-proline-κ(2) O:O'-strontium] dibromide].

Sathiskumar Selladurai S Balakrishnan Thangavelu T Ramamurthi Kandasamy K Thamotharan Subbiah S

Acta crystallographica. Section E, Crystallographic communications 20150926 Pt 10

In the title coordination polymer, {[Sr(C5H9NO2)(H2O)4]Br2} n , the proline mol-ecule exists in a zwitterionic form with one of the ring C atoms disordered over two sites [site-occupancy factors = 0.57 (6):0.43 (6)]. The Sr(II) ion is nine-coordinated by six water O atoms, two monodentate and two μ2-bridging, and three carboxyl-ate O atoms of the proline ligands, with two bridging [Sr-O range = 2.524 (4)-2.800 (5) Å]. In the crystal, there is no direct inter-action between the proline mol-ecules ...[more]

PMID: 26594406

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Crystal structure of catena-poly[[[tri-aqua-strontium]-di-μ2-glycinato] dibromide].

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Crystal structure of catena-poly[[cadmium(II)-di-μ2-bromido-μ2-l-proline-κ(2) O:O'] monohydrate].

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Crystal structure of poly[di-aqua-(μ2-benzene-1,4-di-carboxyl-ato-κ(2) O (1):O (4))(μ2-benzene-1,4-di-carboxyl-ato-κ(4) O (1),O (1'):O (4),O (4'))bis-(μ2-3,3',5,5'-tetra-methyl-4,4'-bi-pyrazole-κ(2) N:N')dinickel(II)].

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