Structure and magnetic properties of Pb2Cu3B4O11: a new copper borate featuring [Cu3O8]10- units |
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| Authors: | Pan Shilie Watkins Byron Smit Jared P Marvel Michael R Saratovsky Ian Poeppelmeier Kenneth R |
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| Affiliation: | Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA. |
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| Abstract: | Pb2Cu3B4O11 crystallizes in the monoclinic space group P2/n (No. 13) with a = 6.8016(15) A, b = 4.7123(10) A, c = 14.614(3) A, beta = 97.089(3) degrees, and Z = 2. The crystal structure consists of infinite [Cu3O8]10- zigzag chains of alternating dimers and monomers. The magnetic susceptibility and specific heat capacity show spin-gap and Curie-Weiss behaviors that can be explained by a model of Cu(2)-Cu(2) dimers and isolated or weakly coupled Cu(1) monomers. |
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