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Issue 11, 2008
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Copper(I) and silver(I) coordination frameworks involving extended bipyridazine bridges

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1,4-(Pyridazin-4-yl)benzene (bpph), a new N-donor tetradentate ligand, was prepared by inverse electron demand cycloaddition reacting 1,4-diethynylbenzene and 1,2,4,5-tetrazine. In combination with Cu(I) and Ag(I) ions, it affords coordination framework topologies that were dominated by assembly of dinuclear metal–pyridazine “secondary building blocks” [M2(μ-pdz)2] supporting further polymeric connectivity. In structures [Cu2(bpph)(CH3CN)2{S2O6}] (1) and [Ag6(bpph)3(H2O)6{C6H4(COO)2}2]C6H4(COO)2·4H2O (8) interconnection of the dinuclear nodes occurs with anionic dithionate and isophthalate bridges, while [Ag2(bpph){C6H5CO2}2]·2H2O (7) adopts a linear chain structure incorporating disilver(I) pyridazine units and terminal benzoate anions. [Cu4(bpph)5](BF4)4·4CHCl3 (2) has a 3D supramolecular structure involving polycatenation of the 2D “bilayer” metal–organic topologies built up of five-connected dinuclear nodes. Frameworks of [Ag(bpph){NO3}]·CHCl3 (3) and [Ag(bpph){C2F5COO}] (5) exist as 2D square-grids nets supported with sets of tetra- and bidentate bipyridazine bridges, while closely related [Ag4(bpph)3{CF3COO}4]·CH3CN (4) is a 1D “ladder” polymer. The three-fold interpenetrated 3D diamondoid framework of [Ag4(bpph)3{CH3SO3}4]·2CHCl3 (6) was based upon more complicated tetranuclear nodes [Ag4(μ-pdz)4(pdz)2].

Graphical abstract: Copper(i) and silver(i) coordination frameworks involving extended bipyridazine bridges

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Publication details

The article was received on 23 Jan 2008, accepted on 18 Apr 2008 and first published on 09 Jun 2008

Article type: Paper
DOI: 10.1039/B801231H
Citation: New J. Chem., 2008,32, 1910-1918
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    Copper(I) and silver(I) coordination frameworks involving extended bipyridazine bridges

    A. S. Degtyarenko, P. V. Solntsev, H. Krautscheid, E. B. Rusanov, A. N. Chernega and K. V. Domasevitch, New J. Chem., 2008, 32, 1910
    DOI: 10.1039/B801231H

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