Cadmium nitrate coordination polymers with substituted pyridazino[4,5-d] pyridazines

Konstantin V. Domasevitch, Pavlo V. Solntsev, Joachim Sieler

Research output: Contribution to journalArticlepeer-review


catena-Poly[[aquabis(nitrato-κ2O,O′)cadmium(II)] -μ-1,2,3,6,7,8-hexahydrocinnolino[5,4,3-cde]cinnoline-κN 1:κN6], [Cd(NO3)2(C 12H12N4)(H2O)]n, (I), and catena-poly[[[bis(nitrato-κ2O,O′)cadmium(II)]-μ-2,2, 7,7-tetramethyl-1,2,3,6,7,8-hexahydrocinnolino[5,4,3-cde]cinnoline-κN 1:κN6] chloroform solvate], {[Cd(NO 3)2(C12H12N4)] ·CHCl3}n, (II), are the first structurally examined cadmium-pyridazine coordination compounds. They possess one-dimensional polymeric structures supported by the bidentate bridging function of the cinnolino[5,4,3-cde]cinnoline ligands, which lie about inversion centres. The Cd atoms are seven-coordinated in (I) and six-coordinated in (II), involving two bidentate nitrate groups [Cd - O = 2.229 (2)-2.657 (2) Å], two N atoms of the cinnoline ligands [Cd - N = 2.252 (2)-2.425 (2) Å], and, additionally, a water O atom in (I) [Cd - O = 2.284 (2) Å]. In (I), the coordinated organic and aqua ligands form an intramolecular O - H⋯N hydrogen bond [O⋯N = 2.730 (3) Å].

Original languageEnglish (US)
Pages (from-to)m70-m73
JournalActa Crystallographica Section C: Crystal Structure Communications
Issue number2
StatePublished - Feb 2006
Externally publishedYes


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