Syntheses, redox behavior, and magnetic and spectroscopic properties of copper(II)copper(II)copper(II), copper(II)nickel(II)copper(II), and copper(II)palladium(II)copper(II) species. Crystal structure of [L2Cu2Cu(dmg)2Br]ClO4.cntdot.CH3OH (L = 1,4,7-trimethyl-1,4,7-triazacyclononane; dmg = dimethylglyoximato(2-))

Chaudhuri, Phalguni; Winter, Manuela; Vedova, Beatriz P. C. Della; Bill, Eckhard; Trautwein, Alfred X.; Gehring, S.; Fleischhauer, P.; Nuber, Bernhard; Weiß, Johannes

doi:10.1021/ic00009a036

Cited by 127 publications

(50 citation statements)

References 10 publications

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“…This finding clearly shows that the spin state is a S = 1 triplet state, and a computer simulation [10] yields a zero-field splitting parameter D of 1.7 mT and a hyperfine splitting A k of 3.9 mT, which is reasonable. [9,11] These results were fully supported by the Qband and 240 GHz data (shown in Figure S7 of the Supporting Information). The g-values obtained are g z = 2.4674, g y = 2.0797, and g x = 2.0706.…”

supporting

confidence: 58%

Synthesis and Characterization of the Dicopper(II)‐Containing 22‐Palladate(II)[Cu^II₂Pd^II₂₂P^V₁₂O₆₀(OH)₈]²⁰⁻

et al. 2011

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The recently discovered area of water-soluble noble-metalbased polyoxometalates (POMs) [1a] is currently developing fast, not only because of their interesting structures and properties but also because of the promising applications of these compounds. [1][2][3][4][5] Currently polyoxopalladates(II) are the noble-metalbased polyanion family comprising the largest number of members.In Figure 1). This polyanion contains the largest number of palladium ions yet found in polyoxopalladate chemistry. The bonding of each Cu II ion involves the rare eightfold oxo-coordination. Polyanion 1 has been prepared by heating of Pd 3 (CH 3 COO) 6 and Cu-(CH 3 COO) 2 ·H 2 O in sodium phosphate buffer (0.5 m, pH 6.9), and isolated as a hydrated sodium salt, Na 20 [Cu 2 Pd 22 P 12 O 60 (OH) 8 ]·58 H 2 O (Na-1), which is stable in the solid state under air and light, is soluble in water, and can be repeatedly recrystallized from aqueous solution.The pH value of the reaction mixture is a crucial factor for the formation of Na-1. For example, at slightly lower pH values (6.0-6.2), we observed the formation of dark-red, octahedral crystals of a hydrated sodium salt of a compound with a {CuPd 12 P 8 } core, [5] the crystal structure and properties of which will be presented elsewhere. At the intermediate pH range 6.2-6.9, a mixture of the two compounds was obtained. In the absence of copper(II) ions, a similar synthetic

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supporting

confidence: 58%

Synthesis and Characterization of the Dicopper(II)‐Containing 22‐Palladate(II)[Cu^II₂Pd^II₂₂P^V₁₂O₆₀(OH)₈]²⁰⁻

et al. 2011

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“…A fourth N atom from the L ligand completes the coordination in the axial position with a distinctly longer Cu--N(1) bond length of 2.255 (10) A. This geometry has been observed previously in other square-pyramidal L complexes of copper(II) (Chaudhuri et al, 1991(Chaudhuri et al, , 1992. The N30 coordination plane around the copper and the plane of the oxamidato group form a dihedral angle of 8.6 °.…”

Section: Commentsupporting

confidence: 78%

Ring cleavage of imidazole to oxamide by reaction with dioxygen in the presence of a CuI–amine complex. Structure of μ-oxamidato-bis[(1,4,7-trimethyl-1,4,7-triazacyclononane)copper(II)] triiodide iodide

Flörke¹,

Haupt²,

Karpenstein³

et al. 1993

Acta Crystallogr C

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An oxamidato group in a trans conformation bridges two trirnethyltriazacyclononane moieties. Each Cu atom is fivefold coordinated by four N and one O atoms. The N and O atoms of the oxamidato ligand are disordered over two sites giving two different trans conformations. The cations are packed along [ 100] with iodide and triiodide anions between them. The 13-ions are disordered and have asymmetric I--I bond lengths.

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“…Thus the efficient overlap of the Cu(d "magnetic orbitals" leads to strong, net antiferromagnetic coupling. A good fit was obtained using a S = 1/2 trimer model [34] using the parameters g = 2.08, 2J = -1000 cm - 2 Br](ClO 4 )·MeOH (Me 3 -tacn = 1,4,7-trimethyl-1,4,7-triazacyclononane; dmg = dimethylglyoximate), [35] the latter having similar Cu-NO-Cu pathways to those in 1. The perpendicular bridging mode has previously been reported for this class of ligands only in the [Cu(cmnm) 2 ] coordination polymer.…”

Section: Crystal Structures and Magnetismmentioning

confidence: 99%

Nucleophilic Addition of Water and Alcohols to Dicyanonitrosomethanide: Ligands with Diverse Bonding Modes in Magnetically Coupled d‐Block Complexes

et al. 2009

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Ligands resulting from the transition-metal-promoted nucleophilic addition of water or an alcohol to dicyanonitrosomethanide ions (dcnm) have been utilised in the formation of a large series of polynuclear complexes. Addition of water to dcnm results in formation of carbamoylcyanonitrosomethanide (ccnm); deprotonation of this ligand gives amidocarbonyl(cyano)nitrosomethanide (acnm), which has been incorporated into the trinuclear complex [Cu 3 (acnm) 2 (dmae) 2

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Cited by 127 publications

References 10 publications

Synthesis and Characterization of the Dicopper(II)‐Containing 22‐Palladate(II)[Cu^II₂Pd^II₂₂P^V₁₂O₆₀(OH)₈]²⁰⁻

Synthesis and Characterization of the Dicopper(II)‐Containing 22‐Palladate(II)[Cu^II₂Pd^II₂₂P^V₁₂O₆₀(OH)₈]²⁰⁻

Ring cleavage of imidazole to oxamide by reaction with dioxygen in the presence of a CuI–amine complex. Structure of μ-oxamidato-bis[(1,4,7-trimethyl-1,4,7-triazacyclononane)copper(II)] triiodide iodide

Nucleophilic Addition of Water and Alcohols to Dicyanonitrosomethanide: Ligands with Diverse Bonding Modes in Magnetically Coupled d‐Block Complexes

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Cited by 127 publications

References 10 publications

Synthesis and Characterization of the Dicopper(II)‐Containing 22‐Palladate(II)[CuII2PdII22PV12O60(OH)8]20−

Synthesis and Characterization of the Dicopper(II)‐Containing 22‐Palladate(II)[CuII2PdII22PV12O60(OH)8]20−

Ring cleavage of imidazole to oxamide by reaction with dioxygen in the presence of a CuI–amine complex. Structure of μ-oxamidato-bis[(1,4,7-trimethyl-1,4,7-triazacyclononane)copper(II)] triiodide iodide

Nucleophilic Addition of Water and Alcohols to Dicyanonitrosomethanide: Ligands with Diverse Bonding Modes in Magnetically Coupled d‐Block Complexes

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Synthesis and Characterization of the Dicopper(II)‐Containing 22‐Palladate(II)[Cu^II₂Pd^II₂₂P^V₁₂O₆₀(OH)₈]²⁰⁻

Synthesis and Characterization of the Dicopper(II)‐Containing 22‐Palladate(II)[Cu^II₂Pd^II₂₂P^V₁₂O₆₀(OH)₈]²⁰⁻