Photochemical Reactions of Fluorinated Pyridines at Half-Sandwich Rhodium Complexes: Competing Pathways of Reaction.
Photochemical Reactions of Fluorinated Pyridines at Half-Sandwich Rhodium Complexes: Competing Pathways of Reaction.
复制标题
DOI:
10.1021/om400552r
复制
发表时间:
2014-01-13
期刊:
影响因子:
2.8
通讯作者:
Whitwood AC
中科院分区:
文献类型:
--
作者:
Procacci B;Blagg RJ;Perutz RN;Rendón N;Whitwood AC
Irradiation of CpRh(PMe3)(C2H4) (1; Cp = η5-C5H5) in the presence of pentafluoropyridine in hexane solution at low temperature yields an isolable η2-C,C-coordinated pentafluoropyridine complex, CpRh(PMe3)(η2-C,C-C5NF4) (2). The molecular structure of 2 was determined by single-crystal X-ray diffraction, showing coordination by C3–C4, unlike previous structures of pentafluoropyridine complexes that show N-coordination. Corresponding experiments with 2,3,5,6-tetrafluoropyridine yield the C–H oxidative addition product CpRh(PMe3)(C5NF4)H (3). In contrast, UV irradiation of 1 in hexane, in the presence of 4-substituted tetrafluoropyridines C5NF4X, where X = NMe2, OMe, results in elimination of C2H4 and HF to form the metallacycles CpRh(PMe3)(κ2-C,C-CH2N(CH3)C5NF3) (4) and CpRh(PMe3)(κ2-C,C-CH2OC5NF3) (5), respectively. The X-ray structure of 4 shows a planar RhCCNC-five-membered ring. Complexes 2–5 may also be formed by thermal reaction of CpRh(PMe3)(Ph)H with the respective pyridines at 50 °C.
登录
查看更多内容
影响因子:
16.6
作者:
Doster, Meghan E.;Johnson, Samuel A.
通讯作者:
Johnson, Samuel A.
DOI:
10.1039/c39890000928
发表时间:
1989-07-15
影响因子:
--
作者:
BELT, ST;DUCKETT, SB;PERUTZ, RN
通讯作者:
PERUTZ, RN
影响因子:
3.8
作者:
Boettcher, Hans-Christian;Graf, Marion;Krueger, Hartmut
通讯作者:
Krueger, Hartmut
影响因子:
4.3
作者:
Gross, Juergen H.;Nieth, Norbert;Hofmann, Peter
通讯作者:
Hofmann, Peter
影响因子:
2.8
作者:
Cronin, L;Higgitt, CL;Perutz, RN
通讯作者:
Perutz, RN