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  • 1
    ISSN: 0044-2313
    Keywords: Cadmium(II) complex ; 1,2-bis(phenyltriazeno)benzene ligand ; synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The First Metal Complex with Neutral 1,2-Bis(phenyltriazeno)-benzene as Ligand: Synthesis and Crystal Structure of [Cd{PhN3(H)C6H4N3(H)Ph}{PhN3C6H4N3(H)Ph}2][Cd{PhN3(H)C6H4N3(H)Ph}{PhN3C6H4N3(H)Ph}2] is obtained in aqueous ammonia by the reaction of CdSO4 with an excess of 1,2-bis(phenyltriazeno)benzene. It forms orange red, air stable prismatic crystals with the monoclinic space group P21/c and a = 1217.7(2); b = 2161.8(6); c = 2008.3(5) pm; β = 100.07(6)º; Z = 4. The compound is composed of mononuclear complexes in which the Cd atom is coordinated by one chelating bis(phenyltriazeno)benzene and two monodentate 1-phenyltriazenido-2-phenyltriazeno benzene anions in a distorted tetrahedral arrangement. The Cd - N distances are in the range of 220.7 to 239.7 pm.
    Notes: [Cd{PhN3(H)C6H4N3(H)Ph}{PhN3C6H4N3(H)Ph}2] entsteht in ammoniakalischer Lösung aus CdSO4 und einem Überschuß an 1,2-Bis(phenyltriazeno)benzol in Form orangeroter, luftstabiler Kristalle. Es kristallisiert monoklin in der Raumgruppe P21/c mit a = 1217,7(2); b = 2161,8(6); c = 2008,3(5) pm; β = 100,07(6)º; Z = 4. Die Verbindung bildet einkernige Komplexe, in denen das Cd-Kation von einem chelatartig gebundenen Bis(phenyltriazeno)benzol und zwei einzähnig koordinierenden 1-Phenyltriazenido-2-phenyltriazenobenzol-Anionen verzerrt tetraedrisch umgeben ist. Die Cd - N-Abstände liegen im Bereich zwischen 220,7 und 239,7 pm.
    Additional Material: 1 Ill.
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  • 2
    ISSN: 0044-2313
    Keywords: Tetrameric copper(II) complex ; μ2-oxo ligand ; 1-phenyltriazenido-2-phenyltriazeno benzene ligand ; synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of Cu4[PhN3C6H4N3(H)Ph]4(μ2-O)2, a Tetranuclear Copper(II) Complex with 1-Phenyltriazenido-2-phenyltriazeno-benzene as LigandCu4[PhN3C6H4N3(H)Ph]4(μ-O)2 (1) results from the reaction of an aqueous solution of [Cu(NH3)4]2+ with 1,2-bis(phenyltriazeno)benzene in ether. 1 crystallizes in the orthorhombic space group Pba2 with the lattice parameters a = 1661.5(5), b = 1914.7(7), c = 1269.2(5) pm; Z = 2. In the tetrameric complex with the symmetry C2 the Cu2+ cations form a tetrahedron (Cu—Cu: 298.3(1)-337.1(1) pm). The μ2-oxo ligands occupy the twofold axis and bridge two opposite edges of the Cu4 tetrahedron (Cu—O: 190.0(3) and 192.5(4) pm). The 1-phenyltriazenido-2-phenyltriazeno benzene anions bridge two Cu2+ ions chelating one metal ion and coordinating monodentate the neighbouring one (Cu—N: 191.0(5)-204.1(4) pm).
    Notes: Cu4[PhN3C6H4N3(H)Ph]4(μ-O)2 (1) entsteht bei der Umsetzung einer wäßrigen Lösung von [Cu(NH3)4]2+ mit 1,2-Bis(phenyltriazeno)benzol in Ether. 1 kristallisiert orthorhombisch in der Raumgruppe Pba2 mit den Gitterkonstanten a = 1661,5(5); b = 1914,7(7); c = 1269,2(5) pm; Z = 2. Im tetrameren Komplex mit der Symmetrie C2 bilden die Cu2+-Ionen ein Tetraeder (Cu—Cu: 298,3(1)-337,1(1) pm). Die μ2-Oxoliganden liegen auf der C2-Achse und überbrücken zwei gegenüberliegende Tetraederkanten (Cu—O: 190,0(3) und 192,5(4) pm). Die 1-Phenyltriazenido-2-phenyltriazeno-benzol-Anionen verbrücken benachbarte Cu2+-Ionen, die sie einerseits chelatisierend und andererseits einzähnig koordinieren (Cu—N: 191,0(5)-204,1(4) pm).
    Additional Material: 1 Ill.
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