Five-Coordinate Complexes. II.<sup>1</sup> Trigonal Bipyramidal Copper(II) in a Metal Atom Cluster

Bertrand, J. A.; Kelley, James A.

doi:10.1021/ja00972a053

Cited by 85 publications

(37 citation statements)

References 2 publications

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“…In addition, a number of other Cu40X,L4 complexes have been prepared and their structures determined. The structural features of these complexes have been discussed in some detail by Bertrand and Kelley (7).…”

Section: Discussionmentioning

confidence: 99%

“…Several p4-0x0-hexa-p-halotetracopper(11) complexes have been prepared by other workers, where X is bromine or chlorine, and L is a variety of neutral and anionic ligands (4)(5)(6)(7)(8). These complexes were usually prepared in a straightforward manner by refluxing CuCI, and 2 CuO in various reaction media, and collecting ," the desired crystals after a few days.…”

Section: Introductionmentioning

confidence: 99%

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A Curious Synthesis of some μ₄-Oxo-hexa-μ-halotetracopper(II) Complexes

Carr¹,

Harrod²

1972

Can. J. Chem.

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The thermal decomposition of a series of phenoxo complexes of copper(II), in solution, containing either trichlorophenoxo or tribromophenoxo ligands and a variety of neutral ligands, has led to a rather unique method for the synthesis of ~4-oxo-hexa-p-halotetracopper(II) complexes. The yield of this complex was found to increase considerably with the ability of the solvent to autoxidize, and also with the addition of hydroperoxides.La decomposition thermique d'une strie de complexes phenoxo cuivre(II), en solution, contenant des ligands soit de trichlorophenoxo ou de tribromophenoxo et une varieti: de ligands neutres, a conduit a une mkthode de synthkse plut6t unique de complexes de ~4-oxo-hexa-p-halotCtra-cuivre(II). On constate que le rendement en complexe croit considerablement avec le pouvoir d'autoxydation du solvant ainsi que par addition d'hydroperoxydes.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Curious Synthesis of some μ₄-Oxo-hexa-μ-halotetracopper(II) Complexes

Carr¹,

Harrod²

1972

Can. J. Chem.

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“…[20][21][22][23] Bertrand reported the first structure in 1966. 24 The usual arrangement in tetranuclear Cu 4 OX 6 L 4 complexes consists of a central oxygen atom bound to four tetrahedrally arranged copper(II) atoms. At the same time, each copper(II) atom adopts a trigonal bipyramidal coordination with one terminal axial position occupied by ligand L. Many novel complexes or coordination polymers based on ligands generated in situ have been synthesized through one-pot reaction under hydrothermal or solution reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structure and Electrochemistry of Tetranuclear Oxygen-Centered Copper(II) Clusters with Acetylacetone and Benz-pyrazole Hydrolyzed Derivatives as Ligand

Vafazadeh

Willis²

2016

ACSi

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Two copper(II) clusters Cu 4 OCl 6 (pyrazole) 4 (1) and Cu 4 OBr 6 (Br-pyrazole) 4 (2) have been synthesized by reacting acetylacetone and benzohydrazide (1:1 ratio) with CuX 2 (X = Cl for 1 and X = Br for 2) in methanol solution. The structures of both clusters have been established by X-ray crystallography. The clusters contain four Cu, one O, six μ 2 -X atoms, and four pyrazole ligands. The pyrazole was prepared in situ by the reaction of acetylacetone with benzohydrazide in methanol under reflux. In 2, the methine hydrogen of the pyrazole ligand has been replaced by bromine atom. The four copper atoms encapsulate the central O atom in a tetrahedral arrangement. All copper atoms are five-coordinate and have similar coordination environments with slightly distorted trigonal bipyramidal geometry. The cyclic voltammogram of the clusters 1 and 2 show a one-electron quasi-reversible reduction wave in the region 0.485 to 0.731 V, and a one-electron quasi-reversible oxidation wave in the region 0.767 to 0.898 V. In 1, one irreversible oxidative response is observed on the positive of side of the voltammogram at 1.512 V and this can be assigned to Cu(II) to Cu(III) oxidation.

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“…Die meisten dieser Komplexe waren zufällige Re aktionsprodukte [1][2][3], doch wurden von tom Dieck und M itarb. auch allgemein anwendbare Synthesewege beschrieben [4], Strukturuntersu chungen dieser Komplexe, die auch als biologische M odellverbindungen Interesse haben [5,6] …”

Section: Introductionunclassified

Notizen: Kristallstruktur von [Cu₄OCl₆(CH₃CN)₄] · 2 CH₃CN / Crystal Structure of [Cu₄OCl₆(CH₃CN)₄] · 2 CH₃CN

Hiller

Zinn

Dehnicke

1990

Zeitschrift Für Naturforschung B

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Five-Coordinate Complexes. II.¹ Trigonal Bipyramidal Copper(II) in a Metal Atom Cluster

Cited by 85 publications

References 2 publications

A Curious Synthesis of some μ₄-Oxo-hexa-μ-halotetracopper(II) Complexes

A Curious Synthesis of some μ₄-Oxo-hexa-μ-halotetracopper(II) Complexes

Synthesis, Structure and Electrochemistry of Tetranuclear Oxygen-Centered Copper(II) Clusters with Acetylacetone and Benz-pyrazole Hydrolyzed Derivatives as Ligand

Notizen: Kristallstruktur von [Cu₄OCl₆(CH₃CN)₄] · 2 CH₃CN / Crystal Structure of [Cu₄OCl₆(CH₃CN)₄] · 2 CH₃CN

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Five-Coordinate Complexes. II.1 Trigonal Bipyramidal Copper(II) in a Metal Atom Cluster

Cited by 85 publications

References 2 publications

A Curious Synthesis of some μ4-Oxo-hexa-μ-halotetracopper(II) Complexes

A Curious Synthesis of some μ4-Oxo-hexa-μ-halotetracopper(II) Complexes

Synthesis, Structure and Electrochemistry of Tetranuclear Oxygen-Centered Copper(II) Clusters with Acetylacetone and Benz-pyrazole Hydrolyzed Derivatives as Ligand

Notizen: Kristallstruktur von [Cu4OCl6(CH3CN)4] · 2 CH3CN / Crystal Structure of [Cu4OCl6(CH3CN)4] · 2 CH3CN

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Five-Coordinate Complexes. II.¹ Trigonal Bipyramidal Copper(II) in a Metal Atom Cluster

A Curious Synthesis of some μ₄-Oxo-hexa-μ-halotetracopper(II) Complexes

A Curious Synthesis of some μ₄-Oxo-hexa-μ-halotetracopper(II) Complexes

Notizen: Kristallstruktur von [Cu₄OCl₆(CH₃CN)₄] · 2 CH₃CN / Crystal Structure of [Cu₄OCl₆(CH₃CN)₄] · 2 CH₃CN