Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23320
Title: Syntheses and electrochemistry of imidochromium(v) compounds. Crystal structure of [PPh4][Cr(NBut)Cl4(OH2)]
Authors: Leung, WH
Wu, MC
Wong, KY 
Wang, Y
Issue Date: 1994
Publisher: Royal Society of Chemistry
Source: Journal of the Chemical Society. Dalton Transactions, 1994, no. 11, p. 1659-1663 How to cite?
Journal: Journal of the Chemical Society. Dalton Transactions 
Abstract: Reactions of [Cr(NBut)Cl3(dme)] (dme = 1,2-dimethoxyethane) or [PPh4][Cr(NBut)Cl4] with Tl(C5H5) and NaL′ {L′ = (η-C5H5)Co[PO(OEt)2]3} gave respective paramagnetic (μeff ca. 1.7 μB) half-sandwich imidochromium(V) compounds [CrL(NBut)Cl2] (L = η-C5H5 1 or L′ 2). The structure of [PPh4][Cr-(NBut)Cl4(OH2)] has been established by X-ray crystallography. The [Cr(NBut)Cl4(OH2)]- anion has an octahedral geometry with Cr-N (imido) 1.619(3) Å. Treatment of [Cr(NBut)(L)Cl] [H2L = N,N′-bis(salicylidene)ethane-1,2-diamine or its 3,5-But2 derivative] with AgBF4 afforded cationic imidochromium(V) Schiff-base compounds [Cr(NBut)L]BF4. Reactions of the imidochromium(V) compounds with PPh3 at reflux or on irradiation with UV light gave Ph3P=NBut and CrIII. Cyclic voltammetry of the imidochromium(V) compounds showed in most cases irreversible oxidation and reduction waves, which are attributed to oxidation and reduction of CrV.
URI: http://hdl.handle.net/10397/23320
ISSN: 0300-9246
DOI: 10.1039/DT9940001659
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