Acta Crystallographica Section C

Crystal Structure Communications

Volume 63, Part 6 (June 2007)

metal-organic compounds

gd3101 scheme

Acta Cryst. (2007). C63, m259-m263 [ doi:10.1107/S0108270107021154 ]

Silver(I) sulfate coordination polymers with 4,4'-bipyridazine and pyridazino[4,5-d]pyridazine

K. V. Domasevitch, I. A. Gural'skiy, P. V. Solntsev, E. B. Rusanov and A. N. Chernega

Abstract: Poly[[ [mu] ₄-4,4'-bipyridazine- [mu] ₅-sulfato-disilver(I)] monohydrate], {[Ag₂(SO₄)(C₈H₆N₄)]·H₂O}_n, (I), and poly[[aqua- [mu] ₄-pyridazino[4,5-d]pyridazine- [mu] ₃-sulfato-disilver(I)] monohydrate], {[Ag₂(SO₄)(C₆H₄N₄)(H₂O)]·H₂O}_n, (II), possess three- and two-dimensional polymeric structures, respectively, supported by N-tetradentate coordination of the organic ligands [Ag-N = 2.208 (3)-2.384 (3) Å] and O-pentadentate coordination of the sulfate anions [Ag-O = 2.284 (3)-2.700 (2) Å]. Compound (I) is the first structurally examined complex of the new ligand 4,4'-bipyridazine; it is based upon unprecedented centrosymmetric silver-pyridazine tetramers with tetrahedral AgN₂O₂ and trigonal-bipyramidal AgN₂O₃ coordination of two independent Ag^I ions. Compound (II) adopts a typical dimeric silver-pyridazine motif incorporating two kinds of square-pyramidal AgN₂O₃ Ag^I ions. The structure exhibits short anion- [pi] interactions involving noncoordinated sulfate O atoms [O [pi] = 3.041 (3) Å].

Formula: [Ag₂(SO₄)(C₈H₄N₄)]·H₂O and [Ag₂(SO₄)(C₆H₄N₄)(H₂O)]·H₂O


	Structure factor file (CIF format) (126.4 kbytes) [ doi:10.1107/S0108270107021154/gd3101Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (144.9 kbytes) [ doi:10.1107/S0108270107021154/gd3101IIsup3.hkl ] Contains datablock II

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