Solid-state Photochemical [2+2] Cycloaddition Reaction of Hydrogen-Bonded Zn(II) Metal Complex Containing Several Parallel C=C Bonds
详细信息 查看全文
- 作者：ABDUL MALIK P PEEDIKAKKAL
- 关键词：Hydrogen ; bonded metal complex ; solid ; state photoreaction ; topochemical reaction ; 4 ; 4′-bipyridylethylene.
- 刊名：Journal of Chemical Sciences
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：129
- 期：2
- 页码：239-247
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry/Food Science, general;
- 出版者：Springer India
- ISSN：0973-7103
- 卷排序：129
文摘
A 2D hydrogen-bonded dinuclear Zn(II) complex, [{Zn(H2O)3(bpe)2}2(bpe)](NO3)4⋅3bpe ⋅14H2O, 1 (bpe = 4,4′-bipyridylethylene) containing coordination complex cations, [{Zn(H2O)3(bpe)2}2(μ-bpe)] 4+ and free bpe and lattice water molecules shows face-to-face, π⋯π stacking of two of the four free bpe molecules with coordinated bpe ligands. Out of eight bpe molecules, six are aligned in parallel fashion with short C ⋯C distances of 3.663–3.814 Å and they undergo photochemical [2 + 2] cycloaddition reaction. The photoreaction conducted on ground sample of 1 in the solid-state affords rctt-tetrakis(4-pyridyl)cyclobutane (rctt-tpcb) product in 75% yield. The molecular movement of free bpe molecules was tested by conducting the photoreaction in ground sample and heated sample of single crystals. The photoreactivity study of 1 indicates that the free bpe molecules are locked between the cationic [{Zn(H2O)3(bpe)2}2(bpe)] 4+ layers.