Mechanism of carbene insertion into Group 4 element hydrides via chromium carbene complexes. Part II. Organogermanium and organotin hydrides
作者:Joseph A. Connor、J. Philip Day、Robert M. Turner
DOI:10.1039/dt9760000283
日期:——
reaction between various chromiumcarbenecomplexes [Cr(CO)5C(X)(C6H4Y)}](X = OMe or NC4H8; Y =p-OMe, p-Cl, or H) and ER3H (E = Ge, R = Et or Ph; E = Sn, R = Bun or Ph) in the presence of pyridine in hexane solution have been measured by i.r. spectrophotometry under pseudo-first-order conditions in the range 260–330 K. The results are compared with those for analogous silicon hydrides (E = Si, R = Et or
各种铬卡宾络合物[Cr(CO)5 C(X)(C 6 H 4 Y)}]之间的反应动力学(X = OMe或NC 4 H 8; Y = p -OMe,p -Cl,在吡啶溶液中存在吡啶的条件下,通过伪分光光度法测量了在己烷溶液中吡啶存在下的ER 3 H(或H)和ER 3 H(E = Ge,R = Et或Ph; E = Sn,R = Bu n或Ph)结果在260–330 K之间。将结果与类似的氢化硅(E = Si,R = Et或Ph)进行比较。反应速率的变化(E = Si
Mechanism of methoxyphenylcarbene insertion into Group IV element–hydrogen bonds via a chromium carbene complex
作者:Joseph A. Connor、J. Philip Day、Robert M. Turner
DOI:10.1039/c39730000578
日期:——
Activation parameters indicate that the first-order component of the kinetic equation corresponds not to complete dissociation of the carbene ligand but rather to the production of an intermediate which is also formed in the kinetically dominant second-order process of the concerted reaction described in the title.