Titanium(ii) solutions, prepared by dissolving titanium wire in triflic acid + HF, contain equimolar quantities of Ti(iv). These preparations react readily with oxidizing species such as VO2+, substituted benzoquinones, and the biguanide complex of Mn(iv). Reactions with excess Ti(ii) yield Ti(iii). Reductions of 1,4-benzoquinones and the Mn(iv) complex are catalyzed by added Ti(iv) but stoichiometry is unaffected. Rate laws for the Ti(iv)-catalyzed reactions are consistent with formation of a Ti II-TiIV complex (Kformation 4 × 10 2 M-1), which, in some cases, also partakes in contributing deprotonated and halogen-catalyzed paths. © The Royal Society of Chemistry.

Basab Bijayi Dhar

Chemistry

(SoNS) School of Natural Sciences

E.S. Gould

Fulltext

<p>Shiv Nadar University is a comprehensive, multidisciplinary, research-focused, and student-centric University offering a full range of academic programs at the undergraduate, postgraduate and doctoral level. With state-of-the-art infrastructure, the University comprises of academic wings, sophisticated labs, international standard sports facilities, amphitheaters, auditorium, conference rooms and smart classrooms. The University&rsquo;s goal is to become internationally recognized for the quality of its research and creative endeavors and their applicability to improving quality of life, generating new insights and expanding the boundaries of human knowledge creativity. Committed to excellence in teaching, research and service, the University aims to serve the higher education needs of India and the world beyond.</p>