Dimer species in aqueous solutions of m–phenylenediamine-N,N,N′,N′-tetra-acetic acid (m-H4pdta) with copper(<scp>II</scp>) and of pyridine-2,6-diamine-N,N,N′,N′-tetra-acetic acid (2,6-H4pydta) with nickel(<scp>II</scp>). X-Ray crystal structures of Na4[Cu2(m-pdta)2]·18H2O, Na4[Co2(m-pdta)2]·10H2O, and Na4[Ni2(2,6-pydta)2]·8H2O

Mederos, Alfredo; Gili, Pedro; Domı́nguez, Sixto; Benitez, A.; Palacios, Ma Soledad; Hernandez-Padilla, M.; Martín-Zarza, P.; Rodríguez, Matías L.; Ruíz-Pérez, Catalina; Lahoz, Fernando J.; Oro, Luis A.; Brito, Felipe; Arrieta, Jm.; Vlassi, Metaxia; Germain, Gabriel

doi:10.1039/dt9900001477

Cited by 24 publications

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“…Recently, a 1,3‐tpbd platinum complex has been used in mechanistic studies 10. However to date, onlya small number of transition‐metal complexes of related derivatives of the 1,3‐tpbd ligand system have been investigated 11–21…”

Section: Introductionmentioning

confidence: 99%

Syntheses, Characterization and Reactivity of Iron(II), Nickel(II), Copper(II) and Zinc(II) Complexes of the Ligand N,N,N′,N′‐Tetrakis(2‐pyridylmethyl)benzene‐1,3‐diamine (1,3‐tpbd) and Its Phenol Derivative 2,6‐Bis[bis(2‐pyridylmethyl)amino]‐p‐cresol (2,6‐tpcd)

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et al. 2007

Eur J Inorg Chem

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N,N,N′,N′‐Tetrakis(2‐pyridylmethyl)benzene‐1,3‐diamine (1,3‐tpbd), a bis(tridentate) ligand, its protonated derivative, [1,3‐tpbdH2]2+, and a series of new dinuclear complexes [Fe2(1,3‐tpbd)(CH3CN)6](ClO4)4·(CH3CN)2·(H2O)0.5 (1), [Fe2(1,3‐tpbd)(DMF)6](ClO4)4 (2), [Ni2(1,3‐tpbd)(DMF)6](ClO4)4 (3), [Zn2(1,3‐tpbd)(CH3CN)2(SO3CF3)2(H2O)](SO3CF3)2 (4), [Zn2(1,3‐tpbd)Cl4]·H2O (5), [CuZn(1,3‐tpbd)Cl4] (7) and the tetranuclear copper(II) complex [Cu2(1,3‐tpbd)2(H2O)2](ClO4)4·2H2O (8) have been prepared and structurally characterized. Complex 8, a so called “dimetallocyclophane”, interestingly only formed in the presence of zinc ions and not when copper(II) ions were mixed stoichiometrically (1:1 mixtures) under aerobic conditions. Theoretical calculations provide evidence for the formation of a side‐on dinuclear peroxido copper complex during the oxidation of the (1,3‐tpbd)copper(I) complex. A possible reaction product, the dinuclear copper complex [Cu2(2,6‐tpcd)(H2O)(Cl)](ClO4)2·2H2O (9) of a phenolate derivative of 1,3‐tpbd was synthesized and structurally characterized independently from oxidation reactions from copper(II) perchlorate and the ligand 2,6‐bis[bis(2‐pyridylmethyl)amino]‐p‐cresol. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

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Section: Introductionmentioning

confidence: 99%