Chemical structure of <a href="https://en.wikipedia.org/wiki/Grubbs%27_catalyst" class="extiw" title="w:Grubbs' catalyst">Grubbs' Catalyst</a> 2nd Generation. Redrawn from <a href="//commons.wikimedia.org/wiki/File:Grubbs_Catalyst_2nd_Generation.png" title="File:Grubbs Catalyst 2nd Generation.png">File:Grubbs_Catalyst_2nd_Generation.png</a>. Original caption: <i>Not sure if this is better (visually and/or technically) as drawn, with imidazolidinyl C2 in a single bond to Ru and the N lone-pair electrons in conjugation with C2, or with C2 as a carbene with a dative bond to Ru and single bonds to each N (with lone pairs formally on N).</i>
<a href="//commons.wikimedia.org/wiki/User:Hbf878" title="User:Hbf878">Hbf878</a>
2017-11-15
<span class="int-own-work" lang="en">Own work</span>