Steric versus electronic factors in metallacarborane isomerisation: nickelacarboranes with 3,1,2-, 4,1,2- and 2,1,8-NiC2B9 architectures and pendant carborane groups, derived from 1,1'-bis(o-carborane).
Steric versus electronic factors in metallacarborane isomerisation: nickelacarboranes with 3,1,2-, 4,1,2- and 2,1,8-NiC2B9 architectures and pendant carborane groups, derived from 1,1'-bis(o-carborane).
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金属碳硼烷异构化中的空间因素与电子因素:具有 3,1,2-、4,1,2- 和 2,1,8-NiC2B9 结构的镍碳硼烷以及衍生自 1,1-双(邻碳硼烷)的碳硼烷侧基
DOI:
10.1039/c6dt02855a
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Mandal D
中科院分区:
文献类型:
--
作者:
Mandal D
Metalation of the [7-(1′-1′,2′-closo-C2B10H11)-7,8-nido-C2B9H10]2− dianion with various {NiPP2+} or {NiP22+} fragments (PP = chelating diphosphine; P = monodentate phosphine or phosphite) leads either to unisomerised 3,1,2-NiC2B9 species or to isomerised 4,1,2-NiC2B9 or 2,1,8-NiC2B9 species, all with a pendant C2B10 substituent. The products [1-(1′-1′,2′-closo-C2B10H11)-3-dppe-3,1,2-closo-NiC2B9H10] (1), [2-(1′-1′,2′-closo-C2B10H11)-4-dppe-4,1,2-closo-NiC2B9H10] (2), [8-(1′-1′,2′-closo-C2B10H11)-2-dmpe-2,1,8-closo-NiC2B9H10] (3), [1-(1′-1′,2′-closo-C2B10H11)-3,3-(PMe3)2-3,1,2-closo-NiC2B9H10] (4), [1-(1′-1′,2′-closo-C2B10H11)-3,3-(PMe2Ph)2-3,1,2-closo-NiC2B9H10] (6), [1-(1′-1′,2′-closo-C2B10H11)-3,3-{P(OMe)3}2-3,1,2-closo-NiC2B9H10] (9) and [1-(1′-1′,2′-closo-C2B10H11)-2,2-{P(OMe)3}2-2,1,8-closo-NiC2B9H10] (10) were fully characterised spectroscopically and crystallographically, whilst [2-(1′-1′,2′-closo-C2B10H11)-4,4-(PMePh2)2-4,1,2-closo-NiC2B9H10] (8) was characterised spectroscopically. Overall the results suggest that an important factor in a 3,1,2 to 4,1,2 isomerisation is the relief gained from steric crowding, whereas a 3,1,2 to 2,1,8 isomerisation appears to be favoured by strongly electron-donating ligands on the metal.
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影响因子:
15
作者:
M. Churchill;Karen Gold
通讯作者:
Karen Gold
DOI:
10.1039/b103353k
发表时间:
2001
期刊:
Journal of The Chemical Society-dalton Transactions
影响因子:
--
作者:
M. A. Fox;J. Howard;A. K. Hughes;J. M. Malget;D. Yufit
通讯作者:
D. Yufit
DOI:
10.1039/c39780000322
发表时间:
1978
期刊:
Journal of The Chemical Society, Chemical Communications
影响因子:
--
作者:
H. Colquhoun;T. Greenhough;M. Wallbridge
通讯作者:
M. Wallbridge
影响因子:
4.6
作者:
L. V. Griend;J. Clardy;J. Verkade
通讯作者:
J. Verkade
影响因子:
4.6
作者:
CARR, N;MULLICA, DF;STONE, FGA
通讯作者:
STONE, FGA