Crystal structures of di­bromido­{N-(pyridin-2-yl-κN)methyl­idenepicolinohydrazide-κ2N′,O}cadmium methanol monosolvate and di­iodido{N-(pyridin-2-yl-κN)methyl­idenepicolinohydrazide-κ2N′,O}cadmium

Khandar A.A.; Afkhami F.A.; Krautscheid H.Kristoffersen K.A.Atio?lu Z.Akkurt M.Görbitz C.H.

首页> 外文期刊>Acta Crystallographica Section E: Crystallographic Communications >Crystal structures of dibromido{N-(pyridin-2-yl-κN)methylidenepicolinohydrazide-κ2N′,O}cadmium methanol monosolvate and diiodido{N-(pyridin-2-yl-κN)methylidenepicolinohydrazide-κ2N′,O}cadmium

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Crystal structures of dibromido{N-(pyridin-2-yl-κN)methylidenepicolinohydrazide-κ2N′,O}cadmium methanol monosolvate and diiodido{N-(pyridin-2-yl-κN)methylidenepicolinohydrazide-κ2N′,O}cadmium

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The title compounds, CdBr2(C12H10N4O)·CH3OH, (I), and CdI2(C12H10N4O), (II), are cadmium bromide and cadmium iodide complexes of the ligand (E)-N′-(pyridin-2-ylmethylene)picolinohydrazide. Complex (I) crystallizes as the methanol monosolvate. In both compounds, the Cd2+ cation is ligated by one O atom and two N atoms of the tridentate ligand, and by two bromide anions forming a Br2N2O pentacoordination sphere for (I), and by two iodide anions forming an I2N2O pentacoordination sphere for (II), both with a distorted square-pyramidal geometry. In the crystal of complex (I), molecules are linked by pairs of N—H⋯O and O—H⋯Br hydrogen bonds, involving the solvent molecule, forming dimeric units, which are linked by C—H⋯Br hydrogen bonds forming layers parallel to (101). In the crystal of complex (II), molecules are linked by N—H⋯I hydrogen bonds, forming chains propagating along 010. In complex (II), measured at room temperature, the two iodide anions are each disordered over two sites; the refined occupancy ratio is 0.75 (2):0.25 (2).

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《Acta Crystallographica Section E: Crystallographic Communications》 |2017年第5期|698-701|共4页
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Khandar A.A.; Afkhami F.A.; Krautscheid H.Kristoffersen K.A.Atio?lu Z.Akkurt M.Görbitz C.H.;
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Crystal structures of di­bromido­{N-(pyridin-2-yl-κN)methyl­idenepicolinohydrazide-κ2N′,O}cadmium methanol monosolvate and di­iodido{N-(pyridin-2-yl-κN)methyl­idenepicolinohydrazide-κ2N′,O}cadmium

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Crystal structures of dibromido{N-(pyridin-2-yl-κN)methylidenepicolinohydrazide-κ2N′,O}cadmium methanol monosolvate and diiodido{N-(pyridin-2-yl-κN)methylidenepicolinohydrazide-κ2N′,O}cadmium