Display options
Cite
Bentiss F, Lagrenée M, Mentré O, et al. Intermolecular magnetic couplings in the dinuclear copper(II) complex mu-chloro-mu-[2,5-bis(2-pyridyl)-1,3,4-thiadiazole] aqua chlorocopper(II) dichlorocopper(II): synthesis, crystal structure, and EPR and magnetic characterization. Inorg Chem. 2004;43(6):1865-73doi: 10.1021/ic030128s.
Bentiss, F., Lagrenée, M., Mentré, O., Conflant, P., Vezin, H., Wignacourt, J. P., & Holt, E. M. (2004). Intermolecular magnetic couplings in the dinuclear copper(II) complex mu-chloro-mu-[2,5-bis(2-pyridyl)-1,3,4-thiadiazole] aqua chlorocopper(II) dichlorocopper(II): synthesis, crystal structure, and EPR and magnetic characterization. Inorganic chemistry, 43(6), 1865-73. https://doi.org/10.1021/ic030128s
Bentiss, Fouad, et al. "Intermolecular magnetic couplings in the dinuclear copper(II) complex mu-chloro-mu-[2,5-bis(2-pyridyl)-1,3,4-thiadiazole] aqua chlorocopper(II) dichlorocopper(II): synthesis, crystal structure, and EPR and magnetic characterization." Inorganic chemistry vol. 43,6 (2004): 1865-73. doi: https://doi.org/10.1021/ic030128s
Bentiss F, Lagrenée M, Mentré O, Conflant P, Vezin H, Wignacourt JP, Holt EM. Intermolecular magnetic couplings in the dinuclear copper(II) complex mu-chloro-mu-[2,5-bis(2-pyridyl)-1,3,4-thiadiazole] aqua chlorocopper(II) dichlorocopper(II): synthesis, crystal structure, and EPR and magnetic characterization. Inorg Chem. 2004 Mar 22;43(6):1865-73. doi: 10.1021/ic030128s. PMID: 15018505.
Copy Download .nbib Format: NLM
Share it on

Inorg Chem. 2004 Mar 22;43(6):1865-73. doi: 10.1021/ic030128s.

Intermolecular magnetic couplings in the dinuclear copper(II) complex mu-chloro-mu-[2,5-bis(2-pyridyl)-1,3,4-thiadiazole] aqua chlorocopper(II) dichlorocopper(II): synthesis, crystal structure, and EPR and magnetic characterization.

Inorganic chemistry

Fouad Bentiss, Michel Lagrenée, Olivier Mentré, Pierre Conflant, Hervé Vezin, Jean Pierre Wignacourt, Elizabeth M Holt

Affiliations

  1. Laboratoire de Cristallochimie et Physicochimie du Solide, CNRS UMR 8012, ENSCL, BP 108, F-59652 Villeneuve d'Ascq Cedex, France.

PMID: 15018505 DOI: 10.1021/ic030128s

Abstract

Mu-chloro-mu-[2,5-bis(2-pyridyl)-1,3,4-thiadiazole] aqua chlorocopper(II) dichlorocopper(II) is the first characterized dimeric complex of a transition metal and this hetero ligand [C(12)H(10)Cl(4)Cu(2)N(4)OS; triclinic; space group P; a = 9.296(3) A, b = 9.933(3) A, c = 10.412(3) A; alpha = 79.054(5) degrees, beta = 82.478(6) degrees, gamma = 67.099(5) degrees; Z = 2 at room temperature]. The Cu(II) ions are bridged by the N-N thiadiazole bond and a chloride ion [Cu1-Cu2 = 3.7800(8) A]. Thermogravimetric analysis shows this structure to be stable at temperatures up to 348 K. At higher temperatures, the successive loss of a water molecule and one chloride of the dimeric unit is identified. From room temperature to 125 K, half of the Cu(2+) ions are progressively engaged in intermolecular dinuclear antiferromagnetic exchanges, while the other half remain paramagnetic. At lower temperatures, both susceptibility and electron paramagnetic resonance measurements show the paramagnetic-only couplings of this half of the Cu(2+) ions, involving a singlet ground state for interacting Cu(2+). This unusual behavior has been satisfactorily explained on the basis of intermolecular Cu-Cu interactions (J = -180 cm(-1)), involving the magnetic d(z)2 orbital perpendicular to the molecular plane, on which are seen the conjugate effects of the bridging chloride and the planar thiadiazole. It is noteworthy that the behavior of the title compound is original, compared to the systematic in-plane intramolecular antiferromagnetic coupling of other thiadiazole-containing binuclear complexes.

Publication Types