CRYSTAL STRUCTURE OF COBALT(II) 1,12-DODECANEDIOATE TRIHYDRATE: A NEW LAYERED COORDINATION NETWORK
D.J. Price1, S.J. Coles2, M.B. Hursthouse2,3
1WestCHEM, School of Chemistry, University of Glasgow, Glasgow, United Kingdom
Daniel.Price@glasgow.ac.uk
2School of Chemistry, University of Southampton, Southampton, United Kingdom
3Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
Keywords: cobalt, layered compound, carboxylate bridge, pseudopolymorphism
Abstract
Reaction of cobalt hydroxide with the α,ω-dicarboxylic acid and 1,12-dodecanedioic acid under ambient conditions results in the formation of a trihydrate Co(C12H20O4)(H2O)3 (1). Single crystal X-ray diffraction studies show 1 to crystallise in the orthorhombic space group Pccn with cell parameters a = 40.2343(7) Å, b = 8.1519(1) Å, c = 9.1011(2) Å. The structure has a very pronounced two dimensional character, with a separation of hydrophobic n-alkyl chains from the carboxylate groups, the Co2+ cations and the water of crystallisation. The structure is discussed in respect of the structures of other known compositionally related compounds, including the dihydrate Co(C12H20O4)(H2O)2.
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