Evidence for Reactivity of Decamethylcobaltocene with Dichloromethane
Evidence for Reactivity of Decamethylcobaltocene with Dichloromethane
复制标题
十甲基钴茂与二氯甲烷的反应性证据
DOI:
10.1021/acs.organomet.3c00176
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发表时间:
2023
期刊:
影响因子:
2.8
通讯作者:
Blakemore, James D.
中科院分区:
文献类型:
--
作者:
Mikeska, Emily R.;Blakemore, James D.
Decamethylcobaltocene (Cp*2Co) is commonly encountered in organometallic chemistry, where it is often used as a one-electron reductant under inert atmosphere and considered to be a stable metallocene in both its reduced [CoII] and oxidized [CoIII] forms. Here, we report that Cp*2Co is not stable in dichloromethane (CH2Cl2), a finding that contrasts markedly with the robustness of this compound in other solvents used for redox chemistry, such as neat acetonitrile (CH3CN). Parallel chemical and electrochemical studies show that when Cp*2Co comes into contact with CH2Cl2, both [Cp*2Co]+(A) and Cp*Co(η4-C5Me5CH2Cl) (B), a species in which a chloromethyl group has been added to one Cp* ring, are generated.Bsubsequently undergoes a ring-expanding rearrangement if exposed to MeOH, yielding Cp*Co(η5-C6Me5CH2) (C) that is detectable by mass spectrometry (MS). [Cp*Co]3(μ3-CH)2(D) could also be detected by MS, adding to the array of products arising from Cp*2Co that do not maintain the expected metallocene motif. Taken together, these findings suggest that Cp*2Co should be used with caution in CH2Cl2, particularly in cases in which one-electron transfer and/or clean reactivity are desired.
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影响因子:
2.8
作者:
E. V. Mutseneck;D. Loginov;D. Perekalin;Z. Starikova;D. G. Golovanov;P. Petrovskii;P. Zanello;M. Corsini;F. Laschi;A. Kudinov
通讯作者:
A. Kudinov
影响因子:
15
作者:
David D. Schnaars;Guang Wu;T. Hayton
通讯作者:
T. Hayton
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
G. E. Herberich;Tobias Carstensen;W. Klein;M. Schmidt
通讯作者:
M. Schmidt
影响因子:
4.6
作者:
Hayton, Trevor W.;Wu, Guang
通讯作者:
Wu, Guang
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
Michael E. Smith;R. Andersen
通讯作者:
R. Andersen