title: Structure and magnetic properties of Pb2Cu3B4O11: a new copper borate featuring [Cu3O8]10- units.
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.
authors.affiliation: Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA.
authors.forename: Shilie
authors.initials: S
authors.lastname: Pan
authors.forename: Byron
authors.initials: B
authors.lastname: Watkins
authors.forename: Jared P
authors.initials: JP
authors.lastname: Smit
authors.forename: Michael R
authors.initials: MR
authors.lastname: Marvel
authors.forename: Ian
authors.initials: I
authors.lastname: Saratovsky
authors.forename: Kenneth R
authors.initials: KR
authors.lastname: Poeppelmeier