Crystal structure of di-μ-hydroxido-κ4O:O-bis-[bis(acetylacetonato-κ2O,O')Cobalt(III)]

Casseday P. Richers; Jeffery A. Bertke; Thomas B. Rauchfuss

doi:10.1107/S2056989015013663

Crystal structure of di-μ-hydroxido-κ⁴O:O-bis-[bis(acetylacetonato-κ²O,O')Cobalt(III)]

Casseday P. Richers, Jeffery A. Bertke, Thomas B. Rauchfuss

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

The dinuclear title complex, [Co₂(C₅H₇O₂)₄(μ-OH)₂] or [Co(acac)₂(μ-OH)]₂, where acac is acetylacetonate, is centrosymmetric with half of the molecule per asymmetric unit. The molecular structure is a dimer of octahedrally coordinated Co^III atoms with four O atoms from two chelating acac ligands and two O atoms from bridging hydroxide ligands. The crystal packing features weak C-H···O interactions between neighboring molecules, leading to the formation of chains normal to the ac plane. The hydroxide H atoms are not involved in hydrogen bonding because of the bulky acac ligands. This is the first crystal structure reported of a dimeric transition metal bis-acac complex with OH^- as the bridging group.

Original language	English (US)
Pages (from-to)	983-985
Number of pages	3
Journal	Acta Crystallographica Section E: Crystallographic Communications
Volume	71
DOIs	https://doi.org/10.1107/S2056989015013663
State	Published - 2015

Keywords

Acac ligand
Bridging hydroxide ligand
Cobalt(III)
Crystal structure

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

Online availability

10.1107/S2056989015013663

Library availability

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Cite this

@article{e02762f476b144869c3026ac8df6ea83,

title = "Crystal structure of di-μ-hydroxido-κ4O:O-bis-[bis(acetylacetonato-κ2O,O')Cobalt(III)]",

abstract = "The dinuclear title complex, [Co2(C5H7O2)4(μ-OH)2] or [Co(acac)2(μ-OH)]2, where acac is acetylacetonate, is centrosymmetric with half of the molecule per asymmetric unit. The molecular structure is a dimer of octahedrally coordinated CoIII atoms with four O atoms from two chelating acac ligands and two O atoms from bridging hydroxide ligands. The crystal packing features weak C-H···O interactions between neighboring molecules, leading to the formation of chains normal to the ac plane. The hydroxide H atoms are not involved in hydrogen bonding because of the bulky acac ligands. This is the first crystal structure reported of a dimeric transition metal bis-acac complex with OH- as the bridging group.",

keywords = "Acac ligand, Bridging hydroxide ligand, Cobalt(III), Crystal structure",

author = "Richers, {Casseday P.} and Bertke, {Jeffery A.} and Rauchfuss, {Thomas B.}",

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language = "English (US)",

volume = "71",

pages = "983--985",

journal = "Acta Crystallographica Section E: Crystallographic Communications",

issn = "2056-9890",

publisher = "International Union of Crystallography",

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T1 - Crystal structure of di-μ-hydroxido-κ4O:O-bis-[bis(acetylacetonato-κ2O,O')Cobalt(III)]

AU - Richers, Casseday P.

AU - Bertke, Jeffery A.

AU - Rauchfuss, Thomas B.

PY - 2015

Y1 - 2015

N2 - The dinuclear title complex, [Co2(C5H7O2)4(μ-OH)2] or [Co(acac)2(μ-OH)]2, where acac is acetylacetonate, is centrosymmetric with half of the molecule per asymmetric unit. The molecular structure is a dimer of octahedrally coordinated CoIII atoms with four O atoms from two chelating acac ligands and two O atoms from bridging hydroxide ligands. The crystal packing features weak C-H···O interactions between neighboring molecules, leading to the formation of chains normal to the ac plane. The hydroxide H atoms are not involved in hydrogen bonding because of the bulky acac ligands. This is the first crystal structure reported of a dimeric transition metal bis-acac complex with OH- as the bridging group.

AB - The dinuclear title complex, [Co2(C5H7O2)4(μ-OH)2] or [Co(acac)2(μ-OH)]2, where acac is acetylacetonate, is centrosymmetric with half of the molecule per asymmetric unit. The molecular structure is a dimer of octahedrally coordinated CoIII atoms with four O atoms from two chelating acac ligands and two O atoms from bridging hydroxide ligands. The crystal packing features weak C-H···O interactions between neighboring molecules, leading to the formation of chains normal to the ac plane. The hydroxide H atoms are not involved in hydrogen bonding because of the bulky acac ligands. This is the first crystal structure reported of a dimeric transition metal bis-acac complex with OH- as the bridging group.

KW - Acac ligand

KW - Bridging hydroxide ligand

KW - Cobalt(III)

KW - Crystal structure

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