School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, UK.
J Am Chem Soc. 2009 Nov 18;131(45):16398-400. doi: 10.1021/ja907297z.
The discovery of interconvertible platinum coordination modes, which reveals and masks cis coordinating groups upon addition of acid and base, respectively, has been exploited to facilitate stimuli-responsive assembly and disassembly of both two- and three-dimensional metallosupramolecular architectures. Treatment of a binclear platinum complex with acid along with ditopic and tritopic donor ligands generated a molecular square and a trigonal prism, respectively, in good to high yield. These complexes were unambiguously identified using electrospray mass spectrometry, (1)H NMR spectroscopy, and X-ray crystallography. Both assemblies can be disassembled into their constituent parts simply by treatment with base, and the prism can be cycled between the assembled and disassembled states by the alternate addition of acid and base.
互变的铂配位模式的发现，分别通过添加酸和碱来揭示和掩盖顺式配位基团，已被用于促进二维和三维金属超分子结构的刺激响应组装和拆卸。用酸处理双核铂配合物以及双齿和三齿给体配体，分别以良好到高产率生成分子正方形和三角棱柱体。这些配合物使用电喷雾质谱、（1）H NMR 光谱和 X 射线晶体学进行了明确的鉴定。通过用碱处理可以将两种组装体简单地拆分成其组成部分，并且棱柱体可以通过交替添加酸和碱在组装和拆卸状态之间循环。
