Daniel B. Leznoff1, Michael J. Katz1, Julie Lefebvre1, Fergal Callaghan1, Jeff E. Sonier1, Renante Yson2, Haiyan Lu2, and Howard H. Patterson2. (1) Simon Fraser University, Burnaby, BC, Canada, (2) University of Maine, Orono, ME
The rational increase of structural dimensionality is an important synthetic goal in supramolecular systems. Such high-dimensionality systems may have useful optical, conducting or porous properties and are a key prerequisite for generating bulk magnetic properties. We have been exploring neglected linear d10-[M(CN)2]- building blocks (M=Au,Ag) in coordination polymers to take advantage of attractive metallophilic interactions to increase structural dimensionality as well as their luminescent properties. This talk will survey a range of [Au(CN)2]-based high-dimensionality coordination polymers with interesting aurophilicity-augmented structures and potentially commercially applicable physical properties. For example, the Cu[Au(CN)2]2(solvent)x polymer system is dynamically vapochromic, i.e., it shows large, reversible colour changes upon exposure to solvent vapours, thereby illustrating a sensor-type application. The Pb[Au(CN)2]2(H2O) polymer shows significant optical birefringence; the luminescence properties of related Pb(II)-containing materials will be presented. Birefringence studies with neutral Hg(CN)2-based coordination polymers will also be presented. Simple "mineral-like" cyanoaurate(I)-based polymers of the form M(μ-H2O)2[Au(CN)2]2 with unusual magnetic properties (M=Cu, Ni) will be described; their magnetic properties were determined using a combination of muon spin resonance at the TRIUMF cyclotron facility and SQUID magnetometry.
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Back to The 61st Northwest Regional Meeting (June 25 - 28, 2006)