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Articles

Two new crystal structures of two-dimensional lead(II) coordination polymers with flexible alicyclic carboxylate ligands

, , , , , & show all
Pages 717-721 | Received 05 Mar 2015, Accepted 20 Jul 2016, Published online: 18 Aug 2016
 

ABSTRACT

Two new coordination polymers with flexible alicyclic carboxylate ligands, generally formulated as [Pb(chda)]n (1, H2chda = 1,1′-cyclohexanediacetic acid) and [Pb(tmg)]n (2, H2tmg = 3,3′-tetramethyleneglutate), have been successfully synthesized through the liquid–liquid diffusion method. They represent the first main group of metal–organic hybrid compounds assembled from H2chda and H2tmg. Compound 1 crystallized in the non-centrosymmetric space group Pca21, whereas 2 adopts the centrosymmetric P2(1)/c space group. Their structure features one-dimensional infinite chains extended into two-dimensional layer framework. Interestingly, the lead atoms exhibit hemi- as well as holo-directed coordination geometry with coordination number seven in both compounds.

Funding

This work is supported by the National Natural Science Foundation of China (No. 21441008, 21301002, 51303002), Natural Science Foundation of Anhui Province (No. 1508085QB40), Natural Science Foundation for Colleges and Universities in Anhui Province (No. KJ2013A045), and State Key Laboratory of Structural Chemistry (No. 20140006).

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