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The Donor Properties of Bis(pyrazolyl)‐Sulfur Derivatives From the reactions of bis(pyrazolyl)sulfane S(pz)2 ( 1 ) with the fluoro Lewis acids BF3 and AsF5 in liquid SO2 the 1:2‐adducts S(pz·BF3)2 ( 2 ) and S(pz·AsF5)2 ( 3 ) are obtained. 1 reacts with [Co(SO2)4(FAsF5)2] to give the doubly bridged FAsF4F dimeric complex [Co{S(pz)2}(FAsF5)(SO2)(μ‐FAsF4F)]2 ( 5 ). From F2S(pz)2 and [Ni(SO2)6](AsF6)2, the fluorocubane [Ni4F4{S(pz)2}4(μ‐FAsF4F)2](AsF6)2·4SO2 ( 8 ) is isolated. The X‐ray structures of the compounds 2 , 3 , 5 and 8 are reported. 相似文献
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Harald Lanig 《Nachrichten aus der Chemie》2005,53(11):1139-1141
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The Seliwanoff's test is a useful tool in biochemistry and food chemistry as test for fructose and other hexoketoses. This article depicts the life and work of Russian chemist named F. F. Selivanov, who was born in aristocratic family, was affected by revolutionary Narodniki movement, and attended the universities in Russia, Switzerland and Germany. His life is a good example of connections between Russian and German agrochemical centres in XIX century. His major achievements are the test for fructose and the first synthesis of N‐Bromosuccinimide. He is also known as a doctoral supervisor of A.E. Arbuzov, the discoverer of Michaelis‐Arbuzov reaction. 相似文献
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