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Crystal Structure and Magnetic Interactions in Nickel(II) Dibridged Complexes Formed by Two Azide Groups or by Both Phenolate Oxygen−Azide, −Thiocyanate, −Carboxylate, or −Cyanate Groups

S.K. DeyDepartment of Chemistry, Jadavpur University, Kolkata-700 032, India, Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028-Barcelona, Spain, Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan, and Department of Chemistry, Laboratorium für Kristallographie ETH, Eidgenössische Technische Hochschule Zürich, CH-8092 Zürich, SwitzerlandN. MondalDepartment of Chemistry, Jadavpur University, Kolkata-700 032, India, Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028-Barcelona, Spain, Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan, and Department of Chemistry, Laboratorium für Kristallographie ETH, Eidgenössische Technische Hochschule Zürich, CH-8092 Zürich, SwitzerlandM.S. El FallahDepartment of Chemistry, Jadavpur University, Kolkata-700 032, India, Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028-Barcelona, Spain, Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan, and Department of Chemistry, Laboratorium für Kristallographie ETH, Eidgenössische Technische Hochschule Zürich, CH-8092 Zürich, SwitzerlandRamón VicenteDepartment of Chemistry, Jadavpur University, Kolkata-700 032, India, Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028-Barcelona, Spain, Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan, and Department of Chemistry, Laboratorium für Kristallographie ETH, Eidgenössische Technische Hochschule Zürich, CH-8092 Zürich, SwitzerlandAlbert EscuerDepartment of Chemistry, Jadavpur University, Kolkata-700 032, India, Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028-Barcelona, Spain, Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan, and Department of Chemistry, Laboratorium für Kristallographie ETH, Eidgenössische Technische Hochschule Zürich, CH-8092 Zürich, SwitzerlandXavier SolánsDepartment of Chemistry, Jadavpur University, Kolkata-700 032, India, Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028-Barcelona, Spain, Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan, and Department of Chemistry, Laboratorium für Kristallographie ETH, Eidgenössische Technische Hochschule Zürich, CH-8092 Zürich, SwitzerlandMercè Font‐BardíaDepartment of Chemistry, Jadavpur University, Kolkata-700 032, India, Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028-Barcelona, Spain, Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan, and Department of Chemistry, Laboratorium für Kristallographie ETH, Eidgenössische Technische Hochschule Zürich, CH-8092 Zürich, SwitzerlandTakayuki MatsushitaDepartment of Chemistry, Jadavpur University, Kolkata-700 032, India, Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028-Barcelona, Spain, Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan, and Department of Chemistry, Laboratorium für Kristallographie ETH, Eidgenössische Technische Hochschule Zürich, CH-8092 Zürich, SwitzerlandV. GramlichDepartment of Chemistry, Jadavpur University, Kolkata-700 032, India, Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028-Barcelona, Spain, Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan, and Department of Chemistry, Laboratorium für Kristallographie ETH, Eidgenössische Technische Hochschule Zürich, CH-8092 Zürich, SwitzerlandSamiran MitraDepartment of Chemistry, Jadavpur University, Kolkata-700 032, India, Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028-Barcelona, Spain, Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan, and Department of Chemistry, Laboratorium für Kristallographie ETH, Eidgenössische Technische Hochschule Zürich, CH-8092 Zürich, Switzerland

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Annotatsiya

Tridentate/tetradentate Schiff base ligands L(1) and L(2), derived from the condensation of o-vanillin or pyridine-2-aldehyde with N,N-dimethylethylenediammine, react with nickel acetate or perchlorate salt and azide, cyanate, or thiocyanate to give rise to a series of dinuclear complexes of formulas [Ni(L(1))(micro(1,1)-N(3))Ni(L(1))(N(3))(OH(2))].H(2)O (1), [[Ni(L(1))(micro(1,1)-NCS)Ni(L(1))(NCS)(OH(2))][Ni(L(1))(micro-CH(3)COO)Ni(L(1))( NCS) (OH(2))]] (2) [[2A][2B]], [Ni(L(1))(micro(1,1)-NCO)Ni(L(1))(NCO)(OH(2))].H(2)O (3), and [Ni(L(2)-OMe)(micro(1,1)-N(3))(N(3))](2) (4), where L(1) = Me(2)N(CH(2))(2)NCHC(6)H(3)(O(-))(OCH(3)) and L(2) = Me(2)N(CH(2))(2)NCHC(6)H(3)N. We have characterized these complexes by analytical, spectroscopic, and variable-temperature magnetic susceptibility measurements. The coordination geometry around all of the Ni(II) centers is a distorted octahedron with bridging azide, thiocyanate/acetate, or cyanate in a micro(1,1) mode and micro(2)-phenolate oxygen ion for 1-3, respectively, or with a double-bridging azide for 4. The magnetic properties of the complexes were studied by magnetic susceptibility (chi(M)) versus temperature measurements. The chi(M) nus T plot reveals that compounds 1 and 4 are strongly ferromagnetically coupled, 3 shows a weak ferromagnetic behavior, and 2 is very weakly antiferromagnetically coupled.

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DOI: 10.1021/ic0352553

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