22541-75-9Relevant articles and documents
Synthesis of a Viologen-Tetratitanate Intercalation Compound and its Photochemical Behaviour
Miyata, Hirokatsu,Sugahara, Yoshiyuki,Kuroda, Kazuyuki,Kato, Chuzo
, p. 2677 - 2682 (1988)
Methyl viologen has been intercalated into the interlayer space of layered tetratitanic acid by a method involving the displacement of guest molecules using an n-propylammonium tetratitanate intercalation compound.The viologen tetratitanate intercalation compound changed colour to blue when irradiated by a mercury lamp under vacuum conditions or a nitrogen atmosphere.The formation of radical cations was confirmed by visible and e.s.r. spectroscopy.The electron donor for the photoreduction is thought to originate from the tetratitanate layers.The colour was stable as long as the vacuum conditions were maintained, and fading did not occur rapidly even after introduction of air, requiring > 1 h for the colour to fade completely.These results indicate remarkable stability of the viologen radical cations in this intercalation compound.
q: a reagent for the McMurry reaction and a novel inorganic Grignard complex
Aleandri, Lorraine E.,Bogdanovic, Borislav,Gaidies, Andre,Jones, Deborah J.,Liao, Shijian,et al.
, p. 87 - 94 (1993)
The stepwise formation of two distinct bimetallic titanium/magnesium complexes during the reduction of TiCl3 (or TiCl4) by magnesium in tetrahydrofuran (THF) has been identified. (1) is produced in a first stage, but reacts further with excess Mg to give (2).The reaction is reversible in the presence of excess TiCl3.X-ray absorption spectroscopy has been used to identify the local environment in 2.The most striking feature is the existence of the shortest Ti-Mg interatomic distance yet observed.The Ti-Mg bond length, 2.72(1) Angstroem, is close to the sum of the Pauling single bond metallic radii (2.69 Angstroem) and the complex is termed an inorganic Grignard reagent by analogy with other complexes containing direct transition metal-magnesium bonds.Overall, a dimeric model is compatible with the EXAFS-derived structural parameters and solubility characteristics.The titanium atoms are linked through two bridging MgCl2Mg units and their coordination shells are completed by THF ligands.The structure of 2, and the existence of intermediate 1, can be used to rationalize the known catalytic activity of the TiCl3/Mg/THF system with respect to ether cleavage.
Brintzinger, H.,Schiefferdecker, W.
, p. 277 - 280 (1929)
Reductions by titanium(ii) as catalyzed by titanium(iv)
Mukherjee, Ritam,Yang, Zhiyong,Gould, Edwin S.
, p. 772 - 774 (2007/10/03)
The cobalt(iii) complexes, [(NH3)5CoBr]2+ and [(NH3)5CoI]2+ are reduced by Ti(ii) solutions containing Ti(iv), generating nearly linear (zero-order) profiles that become curved only during
Electrosynthesis of aminotelechelic poly(acrylamide): Initiated by Ti(III)-NH2OH redox system
Padmalatha, Ms,Sherigara
, p. 722 - 724 (2007/10/03)
Ammo-terminated poly(acrylamide) of high molecular weight has been electrochemically synthesised, using titanium(III)-hydroxylamine redox system in aqueous sulphuric acid phase. Polymer is characterised by spectral analysis and molecular weight determination. Influence of various parameters like, concentration of titanium(IV) sulphate, hydroxylamine sulphate, sulphuric acid monomer, temperature and cathodic current on polymer yield has been studied. Suitable mechanism for Ti(III)-NH2OH initiated electro polymerisation of acrylamide is proposed.
