Twisting the arm: structural constraints in bicyclic expanded-ring N-heterocyclic carbenes.
Twisting the arm: structural constraints in bicyclic expanded-ring N-heterocyclic carbenes.
复制标题
扭转手臂:双环扩环N-杂环卡宾的结构约束。
DOI:
10.1039/c8dt04462g
复制
发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Sampford KR
中科院分区:
文献类型:
--
作者:
Sampford KR
A series of diaryl, mono-aryl/alkyl and dialkyl mono- and bicyclic expanded-ring N-heterocyclic carbenes (ER-NHCs) have been prepared and their complexation to Au(I) investigated through the structural analysis of fifteen Au(NHC)X and/or [Au(NHC)2]X complexes. The substituted diaryl 7-NHCs are the most sterically encumbered with large buried volume (%VB) values of 40–50% with the less flexible six-membered analogues having %VB values at least 5% smaller. Although the bicyclic systems containing fused 6- and 7-membered rings (6,7-NHCs) are constrained with relatively acute NCN bond angles, they have the largest %VB values of the dialkyl derivatives reported here, a feature related to the fixed conformation of the heterocyclic rings and the compressional effect of a pre-set methyl substituent.
登录
查看更多内容
DOI:
10.1055/s-0036-1588849
发表时间:
2017
期刊:
Synthesis
影响因子:
--
作者:
Eduard Rais;U. Flörke;R. Wilhelm
通讯作者:
R. Wilhelm
影响因子:
4.3
作者:
Phillips, Nicholas;Dodson, Tristan;Aldridge, Simon
通讯作者:
Aldridge, Simon
影响因子:
4.6
作者:
V. Catalano;Adam L. Moore;J. Shearer;Jineun Kim
通讯作者:
Jineun Kim
影响因子:
2.8
作者:
T. Wurm;Florian F. Mulks;Constantin R. N. Böhling;Dominic Riedel;Poorya Zargaran;M. Rudolph;F. Rominger;A. Hashmi
通讯作者:
A. Hashmi
影响因子:
2.8
作者:
Falivene, Laura;Credendino, Raffaele;Cavallo, Luigi
通讯作者:
Cavallo, Luigi