| (Acetato-kappaO)aqua(1H-imidazole-kappaN3)(picolinato-kappa2N,O)copper(II) 0.87-hydrate: a Z' > 1 structure. | |
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MedLine Citation:
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PMID: 19652309 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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The crystal structure of the title compound, [Cu(C6H4NO2)(C2H3O2)(C3H4N2)(H2O)].0.87H2O, has a square-pyramidal-coordinated Cu(II) centre (the imidazole is trans to the picolinate N atom, the acetate is trans to the picolinate -CO2 group and the aqua ligand is in a Jahn-Teller-elongated apical position) and has two symmetry-independent molecules in the unit cell (Z' = 2), which are connected through complementary imidazole-picolinate N-H...O hydrogen bonding. The two partially occupied solvent water molecules are each disordered over two positions. The disordered solvent water molecules, together with pseudosymmetry elements, support the notion that a crystal structure with multiple identical chemical formula units in the structural asymmetric unit (Z' > 1) can represent a crystal 'on the way', that is, a kinetic intermediate form which has not yet reached its thermodynamic minimum. Neighbouring molecules form pi-pi stacks between their imidazole and picolinate N-heterocycles, with centroid-centroid distances in the range 3.582 (2)-3.764 (2) A. |
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Authors:
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Anne-Christine Chamayou; Chaitali Biswas; Ashutosh Ghosh; Christoph Janiak |
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Publication Detail:
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Type: Journal Article Date: 2009-07-25 |
Journal Detail:
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Title: Acta crystallographica. Section C, Crystal structure communications Volume: 65 ISSN: 1600-5759 ISO Abbreviation: Acta Crystallogr C Publication Date: 2009 Aug |
Date Detail:
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Created Date: 2009-08-04 Completed Date: 2009-09-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8305826 Medline TA: Acta Crystallogr C Country: Denmark |
Other Details:
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Languages: eng Pagination: m311-3 Citation Subset: - |
Affiliation:
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Institut für Anorganische und Analytische Chemie, Universität Freiburg, Albertstrasse 21, D-79104 Freiburg, Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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