Synthesis, crystal structure, and magnetic characterization of the three-dimensional compound [Co2(cbut)(H2O)3]n (H4cbut = 1,2,3,4-cyclobutanetetracarboxylic acid).
作者： Pau Díaz-Gallifa , Oscar Fabelo , Jorge Pasán , Laura Cañadillas-Delgado , Juan Rodríguez-Carvajal
DOI: 10.1021/IC500443T
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摘要: A novel cobalt(II) complex of formula [Co2(cbut)(H2O)3]n (1) (H4cbut = 1,2,3,4-cyclobutanetetracarboxylic acid) has been synthesized under hydrothermal conditions and its crystal structure determined by means synchrotron radiation neutron powder diffraction. The 1 consists layers ions extending in the bc-plane which are pillared along crystallographic a-axis through skeleton cbut4– ligand. Three crystallographically independent [Co(1), Co(2), Co(3)] occur 1. They all six-coordinate with four carboxylate-oxygens [Co(1)–Co(3)] two cis-[Co(1)] or trans-water molecules [Co(2) building distorted octahedral surroundings. Regular alternating double oxo(carboxylate) [between Co(1) Co(1a)] plus one aqua a syn–syn carboxylate bridges Co(2)] b-axis, values cobalt–cobalt separation being 3.1259(8) 3.1555(6) A, res...
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