New tetranuclear copper(II) complexes obtained by using compartmental and exo-dentate ligands

Visinescu D, Madalan AM, Kravtsov V, Simonov YA, Schmidtmann M, Müller A, Andruh M (2003)
POLYHEDRON 22(10): 1385-1389.

Journal Article | Published | English

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Abstract
The synthesis and crystal structures of two new tetranuclear complexes are described: [{L(g-OH)Cu-2}(mu-fum){Cu-2(mu-OH)L}]1(ClO4)(2) (1) and [{L(mu-OH)Cu-2}(mu-IN)(2){Cu-2(mu-OH)L}](ClO4)(2).2C(2)H(5)OH.0.5H(2)O (2). The two complexes have been obtained through self-assembly processes involving a binuclear copper(II) complex, [L(mu-OH)Cu-2](ClO4)(2) (L stands for a compartmental end-off ligand, 2,6-bis[N-2-pyridylethyl)formimidoyl]-phenolato), and exo-dentate ligands (the fumarate anion, fum(2-), and the isonicotinato anion, IN-). The crystal structure of 1 consists of centrosymmetric tetranuclear cationic species, which result by connecting two binuclear units with one dicarboxylato linker. Each carboxylato group forms a third bridge between the copper(II) ions within the binuclear moiety (syn -syn bridging mode). The closest (CuCu)-Cu-... distances in tetramer are 2.930(1) and 9.313(3) Angstrom. Compound 2 contains cationic [Cu-4] rectangles, with the short edges constructed from the preexisting [L-OH and Aphenoxo groups [3.062(1) Angstrom], and the long ones constructed from the isonicotinato linkers [9.352(1) Angstrom]. In both compounds the copper(II) ions are pentacoordinated with a square-pyramidal stereochemistry. (C) 2003 Elsevier Science Ltd. All rights reserved.
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Visinescu D, Madalan AM, Kravtsov V, et al. New tetranuclear copper(II) complexes obtained by using compartmental and exo-dentate ligands. POLYHEDRON. 2003;22(10):1385-1389.
Visinescu, D., Madalan, A. M., Kravtsov, V., Simonov, Y. A., Schmidtmann, M., Müller, A., & Andruh, M. (2003). New tetranuclear copper(II) complexes obtained by using compartmental and exo-dentate ligands. POLYHEDRON, 22(10), 1385-1389.
Visinescu, D., Madalan, A. M., Kravtsov, V., Simonov, Y. A., Schmidtmann, M., Müller, A., and Andruh, M. (2003). New tetranuclear copper(II) complexes obtained by using compartmental and exo-dentate ligands. POLYHEDRON 22, 1385-1389.
Visinescu, D., et al., 2003. New tetranuclear copper(II) complexes obtained by using compartmental and exo-dentate ligands. POLYHEDRON, 22(10), p 1385-1389.
D. Visinescu, et al., “New tetranuclear copper(II) complexes obtained by using compartmental and exo-dentate ligands”, POLYHEDRON, vol. 22, 2003, pp. 1385-1389.
Visinescu, D., Madalan, A.M., Kravtsov, V., Simonov, Y.A., Schmidtmann, M., Müller, A., Andruh, M.: New tetranuclear copper(II) complexes obtained by using compartmental and exo-dentate ligands. POLYHEDRON. 22, 1385-1389 (2003).
Visinescu, D, Madalan, AM, Kravtsov, V, Simonov, YA, Schmidtmann, Marc, Müller, Achim, and Andruh, Marius. “New tetranuclear copper(II) complexes obtained by using compartmental and exo-dentate ligands”. POLYHEDRON 22.10 (2003): 1385-1389.
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