Concepedia

A Novel μ<sub>4</sub>-Oxo Bridged Copper Tetrahedron Derived by Self-Assembly:  First Example of Double Helical Bis(Tridentate) Coordination of a Hexadentate Amine Phenol Ligand

Manindranath Bera, Wing‐Tak Wong, Joan Ribas, Debashis Ray

Inorganic Chemistry · 2004 · 61 citations · 19 references

DOI

Concepts

Abstract

In methanol, the reaction of Cu(ClO(4))(2).6H(2)O and the hexadentate amine phenol ligand (H(2)bahped) in the presence of triethylamine affords a tetranuclear copper(II) complex having the formula [Cu(4)(mu(4)-O)(bahped)(2)](ClO(4))(2). The X-ray structure of this complex shows a tetrahedral central [Cu(II)(4)(mu(4)-O)]unit coordinated to two hexadentate bridging (via the central ethylenediamine part) ligands. The compound is the first example of a mu(4)-oxo tetranuclear copper(II) complex without any bridging ligand along the six tetrahedral edges. Variable-temperature magnetic data clearly show an S(t) = 0 spin ground state for antiferromagnetic interactions between four (2)B(2) copper(II) ions in a dimer of dimers.

References

19

Single‐Atom <i>O</i>‐Bridged Urea in a Dinickel(<scp>II</scp>) Complex together with Ni<sup>II</sup><sub>4</sub>, Cu<sup>II</sup><sub>2</sub> and Cu<sup>II</sup><sub>4</sub> Complexes of a Pentadentate Phenol‐Containing Schiff Base with (O,N,O,N,O)‐Donor Atoms

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Purification, Characterization, and Preliminary Crystallographic Study of Copper-Containing Nitrous Oxide Reductase from<i>Pseudomonas nautica</i>617

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A New Type of .mu.4-Oxo-Bridged Copper Tetramer: Synthesis, X-ray Molecular Structure, Magnetism and Spectral Properties of (.mu.4-Oxo)tetrakis(.mu.-bromo)bis(.mu.-2,6-bis(morpholinomethyl)-4-methylphenolato)tetracopper(II) and (.mu.4-Oxo)tetrakis(.mu.-benzoato)bis(.mu.-2,6-bis(morpholinomethyl)-4-methylphenolato)tetracopper(II)

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Polynuclear Copper-Lanthanide Complexes with Amino Alcohol Ligands. Syntheses, Structures, and Magnetic and Spectroscopic Studies of CuII(bdmmp)2(H2O), PrIIICuII(bdmmp)(bdmmpH)(.mu.-OH)(hfacac)3, [LaIIICuII(bdmmp)(bdmmpH)(.mu.-OH)(O2CCF3)3]2, and CuII4(bdmmp)2(.mu.4-O)(O2CCF3)4, (bdmmpH = 2,6-Bis[(dimethylamino)methyl]-4-methylphenol; hfacac = Hexafluoroacetylacetonato)

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A pyrazole ligand yielding both chloro-bridged dinuclear and tetranuclear copper(II) compounds. The crystal and molecular structure of bis[μ-chloro-chloro(3,4-dimethyl-5-phenylpyrazole) (4,5-dimethyl-3-phenylpyrazole)copper(II)] and of (μ4-oxo)hexakis(μ-chloro)tetrakis(3,4-dimethyl-5-phenylpyrazole)tetracopper(II)

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