Lattice Forces in Heavy Metal Picrates: Structural Characterization of Lead and Mercury Species |
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| Authors: | FRANÇOISE ARNAUD-NEU SYLVIA MICHEL BRIAN W SKELTON ALLAN H WHITE |
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| Institution: | 1. Ecole de Chimie, Polymères , Matériaux, 25 rue Becquerel, Cronenbourg, 67087, France;2. University of Western Australia, Chemistry M313 , 35 Stirling Highway, Crawley, WA, 6009, Australia |
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| Abstract: | Structure determinations for the dimethylsulfoxide (dmso) solvate of lead(II) picrate (picrate = pic = 2,4,6-trinitrophenoxide), formally a centrosymmetric dimer, Pb2(dmso)4(pic)4], and for unsolvated mercury(I) picrate, a polymer of conventional mercurous dimers, Hg2(pic)2] n , show that, despite considerable differences in the form of the metal unit, there are remarkable similarities in the mode of coordination of the bridging picrate ligands. In both lattices, parallel arrays of picrate rings can be discerned but appear to be associated with short N…O, O…O or O…C contacts rather than C…C. In the Pb compound, there is also evidence of intramolecular contacts to dmso-S. |
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| Keywords: | Heavy metal picrates Crystal structures Weak interactions |
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