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|Section2= |Section3= |Section7= |Section8= }} Titanium(II) oxide (TiO) is an inorganic chemical compound of titanium and oxygen. It can be prepared from titanium dioxide and titanium metal at 1500 °C. It is non-stoichiometric in a range TiO0.7 to TiO1.3 and this is caused by vacancies of either Ti or O in the defect rock salt structure.〔 In pure TiO 15% of both Ti and O sites are vacant.〔 Careful annealing can cause ordering of the vacancies producing a monoclinic form which has 5 TiO units in the primitive cell that exhibits higher resistivity.〔Electrical and Magnetic Properties of TiO and VO, Banus M. D., Reed T. B., Strauss A. J., Phys. Rev. B 5, 2775 - 2784, (1972)〕 A high temperature form with titanium atoms with trigonal prismatic coordination is also known. Acid solutions of TiO are stable for a short time then decompose to give hydrogen:〔 :Ti2+ + H+ → Ti3+ + ½ H2 Evidence has been obtained for the presence of the diatomic molecule TiO in the interstellar medium.〔Dyck, H. M.; Nordgren, Tyler E. "The effect of TiO absorption on optical and infrared angular diameters of cool stars" Astronomical Journal (2002), 124(1), 541-545. 〕 TiO shows strong bands in the optical spectra of cool (M-type) stars.〔http://www.stsci.edu/~inr/ldwarf.html〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Titanium(II) oxide」の詳細全文を読む スポンサード リンク
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