Cyclooctatetraene (COT)-coordinated diiron carbene complexes and their remarkable thermolysis reactions

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	Cyclooctatetraene (COT)-coordinated diiron carbene complexes and their remarkable thermolysis reactions
	Zhang L(张磊) ; Zhang S(张庶) ; Xu Q(徐强) ; Xiao N(肖努) ; Sun J(孙杰) ; Chen JB(陈家碧)
刊名	Organometallics
	2005
卷号	24 期号:5 页码:933-944
ISSN号	0276-7333
其他题名	环辛四烯配体的双铁卡宾络合物和它们的热解反应
通讯作者	陈家碧
英文摘要	The reactions of the COT-coordinated diiron cationic bridging carbyne complexes [Fe-2(mu-CAr)(CO)(4)(eta(8)-C8H8)]BF4 (1, Ar = C6H5; 2, Ar = p-CH3C6H4; 3, Ar = p-CF3C6H4) with p-methylaniline gave the COT-coordinated diiron Fischer-type carbene complexes [Fe-2{= C(Ar)NHC6H4CH3-p}(mu-CO)(CO)(3)(eta(8)-C8H8)] (7, Ar = C6H5; 8, Ar = p-CH3C6H4; 9, Ar = p-CF3C6H4). Heating the solution of diiron carbene complexes [Fe-2{=C(Ar)NHC6H5}(mu-CO)-(CO)(3)(eta(8)-C8H8)] (4, Ar = C6H5; 5, Ar = p-CH3C6H4; 6, Ar = p-CF3C6H4) in benzene in a sealed tube at 85-90degreesC for 72 h afforded the chelated diiron carbene complex [Fe-2{=C(C6H5)-NC6H5}(eta(2):eta(3):eta(2)-C8H9)(CO)(4)] (4a), C-8 ring addition products [Fe-2{N(C6H5)=C(Ar)(eta(1):eta(3):eta(2)-C8H9)}(CO)(5)] (10, Ar = C6H5; 12, Ar = p-CH3C6H4; 14, Ar = p-CF3C6H4), and C-7 contraction ring products [Fe-2{N(C6H5)=C(Ar)CH(eta(2):eta(3)-C7H8)(CO)(4)}] (11, Ar = C6H5; 13, Ar = p-CH3C6H4; 15, Ar = p-CF3C6H4), respectively. The similar thermolysis of complexes 7 and 8 afforded corresponding thermolysis products [Fe-2{=C(C6H5)NC6H4CH3-p}(eta(2):eta(3):eta(2)-C8H9)(CO)(4)] (7a), [Fe-2{N(C6H4CH3-p)=C(Ar)(eta(1):eta(2):eta(3)-C8H9)}(CO)(5)] (16, Ar = C6H5; 18, Ar = p-CH3C6H4), and [Fe-2{N(C6H4CH3-p)=C(Ar)CH(eta(2):eta(3)-C7H8)}(CO)(4)] (17, Ar = C6H5; 19, Ar = p-CH3C6H4), respectively. Interestingly, products 4a and 7a were transformed into the eight-membered ring products 10 and 16 and seven-membered ring products 11 and 17, respectively, under similar conditions. Surprisingly, compounds 10, 16, and 18 can also be partially transformed into compounds 11, 17, and 19, respectively, by further thermolysis at higher temperature (100-105degreesC). The structures of complexes 7, 10, 11, 18, and 19 have been established by X-ray diffraction studies.
学科主题	金属有机化学
收录类别	SCI
原文出处	http://dx.doi.org/10.1021/om040101w
语种	英语
WOS记录号	WOS:000227098200026
公开日期	2013-02-27
内容类型	期刊论文
源URL	[http://202.127.28.38/handle/331003/21405]
专题	上海有机化学研究所_金属有机化学国家重点实验室
推荐引用方式 GB/T 7714	Zhang L,Zhang S,Xu Q,et al. Cyclooctatetraene (COT)-coordinated diiron carbene complexes and their remarkable thermolysis reactions[J]. Organometallics,2005,24(5):933-944.
APA	张磊,张庶,徐强,肖努,孙杰,&陈家碧.(2005).Cyclooctatetraene (COT)-coordinated diiron carbene complexes and their remarkable thermolysis reactions.Organometallics,24(5),933-944.
MLA	张磊,et al."Cyclooctatetraene (COT)-coordinated diiron carbene complexes and their remarkable thermolysis reactions".Organometallics 24.5(2005):933-944.