REACTION OF 19-VALENCE-ELECTRON SANDWICH COMPLEXES WITH ALKYL-HALIDES - A RADICAL-CLOCK INVESTIGATION

被引：10

作者：

HERBERICH, GE

CARSTENSEN, T

KLEIN, W

SCHMIDT, MU

机构：

来源：

ORGANOMETALLICS | 1993年 / 12卷 / 04期

关键词：

D O I：

10.1021/om00028a071

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The organometallic radicals COCP2 (1) and CpFe(HMB) (HMB = C6Me6; 2) react with the radical-clock reagent 5-hexenyl iodide to give unrearranged addition products, while with cyclopropylmethylhalides both unrearranged cyclopropylmethyl and rearranged 3-butenyl addition products are formed. The rate constant for radical addition was estimated from the product ratios. For 1 a lower bound of k2 greater-than-or-equal-to 5.8 X 10(8) s-1 at 67-degrees-C was obtained, while for 2 a value of k2 = (1.2 +/-0.2) X 10(9) s-1 at 25-degrees-C was determined. Thus, both 1 and 2 are extremely efficient radical scavengers.

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页码：1439 / 1441

页数：3

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