Evidence for Cobalt-Cobalt Bond Homolysis and Wavelength-Dependent CO Loss in (μ2-Alkyne)Co2(CO)6 Complexes

被引：10

作者：

Boyle, Nicola M. ^{[1
]}

Coleman, Anthony C. ^{[1
]}

Long, Conor ^{[1
]}

Ronayne, Kate L. ^{[2
]}

Browne, Wesley R. ^{[3
]}

Feringa, Ben L. ^{[3
]}

Pryce, Mary T. ^{[1
]}

机构：

[1] Dublin City Univ, Sch Chem Sci, Dublin 9, Ireland

[2] Univ Groningen, Stratingh Inst Chem, NL-9747 AG Groningen, Netherlands

[3] Rutherford Appleton Labs, Lasers Sci Facil, Didcot, Oxon, England

来源：

INORGANIC CHEMISTRY | 2010年 / 49卷 / 22期

关键词：

ALKENE ALKYNE CYCLIZATIONS; ELECTRONIC-STRUCTURE;

D O I：

10.1021/ic101321u

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Time-resolved infrared spectroscopy was used to probe the photochemistry of three (mu(2)-alkyne)Co-2(CO)(6) complexes. The data indicate the formation of a triplet diradical species, with lifetimes in the range 38-71 ps. Theoretical calculations support these experimental findings. No evidence for the CO loss species, (mu(2)-alkyne)Co-2(CO)(5), was observed, and this is rationalized by the low quantum yield for this process at the excitation wavelengths used.

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收藏

页码：10214 / 10216

页数：3

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