Structural and spectroscopic aspects of a strained dicopper complex with a tripodal binucleating ligand

Maloney, John; Glowgoski, Mark; Rohrbach, David F.; Urbach, F. L.

doi:10.1016/s0020-1693(00)82102-7

Cited by 27 publications

(13 citation statements)

References 4 publications

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“…Similar UV/Visible features have been previously observed for several related (µ-phenoxo)dicopper() complexes. [23,24] This probably indicates the formation of the double bridged (µ-alkoxo)(µ-hydroxo)-dicopper() complex G. ESR silent spectra observed at a pH higher than 7, seem to confirm this proposal. Table 3).…”

Section: Acid-base Equilibrium Determinationmentioning

confidence: 62%

Mono‐ versus Binuclear Copper(II) Complexes in Phosphodiester Hydrolysis

et al. 2006

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Section: Acid-base Equilibrium Determinationmentioning

confidence: 62%

Mono‐ versus Binuclear Copper(II) Complexes in Phosphodiester Hydrolysis

et al. 2006

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“…This assignment is based on the fact that upon solubilization in aqueous solution the l-OCH 3 unit undergoes substitution by a hydroxide group as observed for other dinuclear [Cu II (l-OCH 3 )Cu II ] n+ complexes [48]. In addition, this value is in good agreement with that found in the equilibrium of [(BPMP)Cu II (l-OH)Cu II ] 2+ with the corresponding diaquo [(BPMP)(OH 2 )Cu II Cu II (OH 2 )] 3+ complex for which a pK a of 4.95 has previously been determined spectrophotometrically (H-BPMP = 2,6-bis[(bis(2-pyridylmethyl)amino)methyl]-4-methylphenol) [12].…”

Section: Potentiometric Titrationmentioning

confidence: 99%

New unsymmetric dinuclear CuIICuII complexes and their relevance to copper(II) containing metalloenzymes and DNA cleavage

Peralta¹,

Neves²,

Bortoluzzi³

et al. 2006

Journal of Inorganic Biochemistry

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“…[35][36][37][38][39][40][41][42][43] Similarly, bridged hydroxo-, methoxo-and phospho-ester compounds were also observed. 22,[44][45][46][47][48] …”

Section: Introductionmentioning

confidence: 99%

Magnetic and structural properties of dinuclear singly bridged-phenoxido metal(ii) complexes

et al. 2015

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The reaction of a methanolic solution containing the bi-compartmental phenolic ligand 2,6-bis[bis(2-pyridylmethyl)aminomethyl]-4-chlorophenol (L(Cl)-OH) with MCl2·nH2O in the presence of NH4PF6 or NaClO4 afforded the dinuclear bridged-phenoxido dichlorido-metal(ii) complexes [Co2(μ-L(Cl)O)(H2O)2Cl2][Co2(μ-L(Cl)O)(MeOH)2Cl2](PF6)2 (), [Ni2(μ-L(Cl)O)(MeOH)2Cl2]PF6 (), [Ni2(μ-L(Cl)O)(MeOH)(H2O)Cl2]ClO4·1.25H2O (), [Cu2(μ-L(Cl)O)Cl2]PF6·1/2MeOH () and [Zn2(μ-L(Cl)O)Cl2]PF6·MeOH (). The complexes were characterized by elemental microanalyses, conductivity measurements, IR and UV-Vis spectroscopy, mass spectrometry and single crystal X-ray crystallography. Each M(ii) center within the dinuclear complex cations is octahedrally coordinated in complexes , and five-coordinated distorted square pyramidal in and . Magnetic susceptibility measurements at variable temperature of the complexes revealed weak to moderate antiferromagnetic coupling with |J| values = 8.38, 39.0, 30.2 and 0.79 cm(-1), respectively. The results of DFT calculations correlate well with the experimentally determined antiferromagnetic coupling and show that the magnetic exchange coupling occurs mainly through the phenoxido bridge M-O-M. Implications of geometry around the central metal ion, MM distance, M-O-M bond angle and overlapping of magnetic orbitals on the magnetic exchange coupling are discussed.

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Structural and spectroscopic aspects of a strained dicopper complex with a tripodal binucleating ligand

Cited by 27 publications

References 4 publications

Mono‐ versus Binuclear Copper(II) Complexes in Phosphodiester Hydrolysis

Mono‐ versus Binuclear Copper(II) Complexes in Phosphodiester Hydrolysis

New unsymmetric dinuclear CuIICuII complexes and their relevance to copper(II) containing metalloenzymes and DNA cleavage

Magnetic and structural properties of dinuclear singly bridged-phenoxido metal(ii) complexes

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