A. Singh, M. Kadarkaraisamy, G. S. Murthy
Jun 30, 2000
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0
Influential Citations
17
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Journal
Journal of Organometallic Chemistry
Abstract
N -[2-(4-methoxyphenyltelluro)ethyl]phthalimide ( L 1 ) synthesized by reacting ArTe − (generated in situ) with N -(2-bromoethyl)phthalimide, has been characterized structurally. The TeC(alkyl) (2.147(5) A) is somewhat longer than TeC(aryl) (2.111(4) A). The L 1 on reaction with RuCl 3 · x H 2 O results in a novel heterocycle, Te chloro, Te anisyl-1a-aza-4-oxa-3-tellura-1 H ,2 H ,4 aH -9-fluorenone ( 1 ), which is characterized structurally and is a unique example of a tellura heterocycle containing oxygen as well as nitrogen in the same ring. The oxidation state of Te changes to +IV in the formation of 1 . The TeCl and TeO bond lengths in 1 are 2.604(2) and 2.038(4) A, respectively. The reaction of L 1 with [RuCl 2 ( p -cymene)] 2 gives [RuCl 2 ( p -cymene)· L 1 ] ( 2 ) which is characterized structurally. The RuC (av), RuCl and RuTe bond lengths are 2.192(1), 2.417(1)–2.434(1) and 2.651(5) A, respectively. The difference in TeC(alkyl) and TeC(aryl) bond lengths is not affected on the ligation of L 1 with ruthenium(II).