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Crystal structure of ammonium/potassium trans-bis-(N-methyl-iminodi-acetato-?(3) O,N,O')chromate(III) from synchrotron data.

ABSTRACT: The structure of the title compound, [(NH4)0.8K0.2][Cr(C5H7NO4)2] (C5H7NO4 is methyl-iminodi-acetate; mida), has been determined from synchrotron data. The Cr(III) atom is located on a centre of symmetry and is coordinated by two N atoms and four O atoms of two facially arranged tridentate mida ligands, displaying a slightly distorted octa-hedral coordination environment. The Cr-N and mean Cr-O bond lengths are 2.0792?(14) and 1.958?(14)?Å, respectively. The cation site is located on a twofold rotation axis and shows occupational disorder, being occupied by ammonium and potassium cations in a 0.8:0.2 ratio. In the crystal, inter-molecular hydrogen bonds involving the N-H groups of the ammonium cation as donor and the two non-coordinating O atoms of the carboxyl-ate group as acceptor groups consolidate the three-dimensional packing.

SUBMITTER: Moon D

PROVIDER: S-EPMC4971870 | biostudies-other | 2016 Aug

REPOSITORIES: biostudies-other

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Crystal structure of ammonium/potassium trans-bis-(N-methyl-iminodi-acetato-κ(3) O,N,O')chromate(III) from synchrotron data.

Moon Dohyun D Choi Jong-Ha JH

Acta crystallographica. Section E, Crystallographic communications 20160722 Pt 8

The structure of the title compound, [(NH4)0.8K0.2][Cr(C5H7NO4)2] (C5H7NO4 is methyl-iminodi-acetate; mida), has been determined from synchrotron data. The Cr(III) atom is located on a centre of symmetry and is coordinated by two N atoms and four O atoms of two facially arranged tridentate mida ligands, displaying a slightly distorted octa-hedral coordination environment. The Cr-N and mean Cr-O bond lengths are 2.0792 (14) and 1.958 (14) Å, respectively. The cation site is located on a twofold r ...[more]

PMID: 27536411

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