VIBRATIONAL-RELAXATION OF CARBON-MONOXIDE IN MODEL HEME COMPOUNDS - 6-COORDINATE METALLOPORPHYRINS (M=FE, RU, OS)

被引：16

作者：

HILL, JR

DLOTT, DD

FAYER, MD

PETERSON, KA

RELLA, CW

ROSENBLATT, MM

SUSLICK, KS

ZIEGLER, CJ

机构：

[1] UNIV ILLINOIS,SCH CHEM SCI,URBANA,IL 61801

[2] STANFORD UNIV,DEPT CHEM,STANFORD,CA 94305

[3] NEW MEXICO STATE UNIV,DEPT CHEM & BIOCHEM,LAS CRUCES,NM 88033

[4] STANFORD UNIV,HANSEN EXPTL PHYS LAB,STANFORD,CA 94305

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 244卷 / 3-4期

关键词：

D O I：

10.1016/0009-2614(95)00927-V

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Vibrational relaxation of carbon monoxide bound to a series of metalloporphyrin complexes (M-(coproporphyrinate-I tetraisopropyl ester)(CO)(pyridine); M = Fe, Ru, Os) was measured using picosecond infrared pump-probe experiments. The vibrational relaxation rates ((1-2.5) X 10(10) s(-1))increased with increasing mass of the metal ion. This effect is opposite that predicted by through-sigma-bond models and is interpreted as arising from a through-pi-bond coupling between the CO vibrational fundamental and porphyrin vibrations.

引用

页码：218 / 223

页数：6

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