Regioselectivity of the addition of aEuro¢CCl3 and aEuro¢But radicals to (η2-C70)[Os(CO)(PPh3)2(CNBut)] n (n=1, 2): an ESR study

被引：0

作者：

Gasanov, R. G. ^{[1
]}

Martynova, E. V. ^{[1
]}

Tsikalova, M. V. ^{[1
]}

Stankevich, I. V. ^{[1
]}

Novikov, Yu. N. ^{[1
]}

机构：

[1] Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 119991, Russia

来源：

RUSSIAN CHEMICAL BULLETIN | 2010年 / 59卷 / 09期

关键词：

metallofullerenes; ESR spectroscopy; electronic effects; phosphoryl; trichloromethyl; tert-butyl radicals; regioselectivity; stability;

D O I：

10.1007/s11172-010-0300-3

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The addition of (CCl3)-C-aEuro cent and Bu-aEuro cent(t) radicals to (eta(2)-C-70)Os(CO)(PPh3)(2)(CNBut) (1) and (eta(2)-C-70)[Os(CO)(PPh3)(2)(CNBut)](2) (3) was studied by ESR spectroscopy. The metal fragment in complex 1 does not influence the regioselectivity of the addition of the radicals to it. The stability of the spin adducts formed upon addition of free radicals to complexes 1 and 3 is mainly governed by delocalization of the unpaired electron over three hexagonal rings.

引用

页码：1707 / 1712

页数：6

共 13 条

[1] Influence of the nature of ligands in iridium complexes with C60 fullerene and •P(O)(OPri)2, •CMe3, and •CCl3 radicals on regioselectivity of addition and stability of spin-adducts formed:: an EPR study
Gasanov, R. G.
Tsikalova, M. V.
Martynova, E. V.
Chistyakov, A. L.
Stankevich, I. V.
Novikov, Yu. N.
[J]. RUSSIAN CHEMICAL BULLETIN, 2007, 56 (07) : 1351 - 1358
[2] ESR study of reactivity of the complex (η2-C60)Os(CO)(PPh3)2(CNBut) toward free radicals
Gasanov, R. G.
Tsikalova, M. V.
Martynova, E. V.
Novikov, Yu. N.
[J]. RUSSIAN CHEMICAL BULLETIN, 2008, 57 (02) : 309 - 315
[3] RATE CONSTANTS OF THE REACTIONS OF RE(CO)5 RADICALS WITH ORGANIC HALIDES DETERMINED USING ELECTRON-SPIN-RESONANCE SPECTROSCOPY
GASANOV, RG
SADYKHOV, EG
FREIDLINA, RK
[J]. BULLETIN OF THE ACADEMY OF SCIENCES OF THE USSR DIVISION OF CHEMICAL SCIENCE, 1986, 35 (05): : 936 - 941
[4] THE EPR-SPECTRA OF FREE-RADICAL ADDUCTS OF C-70
KEIZER, PN
MORTON, JR
PRESTON, KF
[J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1992, (17) : 1259 - 1261
[5] KOOISTRA FB, 2007, ORG LETT, P551
[6] Ultimate efficiency of polymer/fullerene bulk heterojunction solar cells
Koster, LJA
Mihailetchi, VD
Blom, PWM
[J]. APPLIED PHYSICS LETTERS, 2006, 88 (09)
[7] Fast evaluation of density functional exchange-correlation terms using the expansion of the electron density in auxiliary basis sets
Laikov, DN
[J]. CHEMICAL PHYSICS LETTERS, 1997, 281 (1-3) : 151 - 156
[8] MARTYNOVA EV, 2007, THESIS RUSSIAN ACAD
[9] Perdew JP, 1997, PHYS REV LETT, V78, P1396, DOI 10.1103/PhysRevLett.77.3865
[10] Sidorov L.N., 2005, FULLERENY

← 1 2 →