科研之友
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摘要
A new lead coordination polymer [Pb-2(mip)(2)] (1) has been synthesized under the intervention of polycarboxylic acid by hydrothermal method (H(2)mip = 5-methylisophthalic acid). X-ray single-crystal structure determination reveals that the polymer crystallizes in monoclinic C2/c space group: a = 21.118(2) angstrom, b = 8.0055(7) angstrom, c = 25.556(3) angstrom, and = 111.1730(10)degrees. The Pb(II) cations are connected by four mip anions to produce a 2D (6,3) double-layered framework. It should be noted that four-membered rings by two Pb atoms with two -O atoms of mip groups link each other to form a one-dimensional Pb-O chain through a corner-sharing Pb center.
