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|Section2= |Section3= }} Trimethylolpropane phosphite, C2H5C(CH2O)3P, is a phosphite ester used as a ligand in organometallic chemistry. Trimethylolpropane phosphite is sometimes abbreviated to EtCage. It is a white solid that is soluble in organic solvents. ==Ligand in coordination chemistry== It is prepared by reaction of trimethylolpropane with phosphorus trichloride or by transesterification with trimethylphosphite:〔Verkade, J. G. "Spectroscopic studies of metal-phosphorus bonding in coordination complexes" Coordination Chemistry Reviews 1972, vol. 9, 1-106. 〕 :P(OMe)3 + EtC(CH2OH)3 → 3 MeOH + EtC(CH2O)3P The first member of this series was derived from trimethylolethane,〔Verkade, J. G.; Reynolds, L. T. "The synthesis of a novel ester of phosphorus and of arsenic" Journal of Organic Chemistry (1960), 25, 663-5. 〕 but these derivatives are often poorly soluble. For this reason, the ethyl derivative has received more attention.〔Huttemann, T. J., Jr.; Foxman, B. M.; Sperati, C. R.; Verkade, J. G. "Transition metal complexes of a constrained phosphite ester. IV. Compounds of cobalt(I), cobalt(III), nickel(II), and nickel(0)" Inorganic Chemistry (1965), 4(7), 950-3. 〕 Several EtCage complexes are known, since the ligand is highly basic (for a phosphite) and has a small ligand cone angle (101°). Illustrative complexes include (), () and (CpMe5)RuCl(EtCage)2, shown below. 220px 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「Trimethylolpropane phosphite」の詳細全文を読む スポンサード リンク
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RuCl(EtCage)2-from-xtal-1996-3D-balls.png){kind=link}