In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Reactions of Alkynes with [RuCl(cyclopentadienyl)] Complexes: The Important First Steps, published in 2010, which mentions a compound: 92390-26-6, mainly applied to sterically demanding cyclopentadienyl ruthenium alkyne preparation crystal mol structure; alkyne cyclotrimerization catalyst sterically demanding cyclopentadienyl ruthenium chloride complex; electronic mol structure calculation cyclopentadienyl ruthenium alkyne complex, Synthetic Route of C18H28ClRu.
Cyclopentadienyl-ruthenium half-sandwich complexes with η2-bound alkyne ligands have been suggested as catalytic intermediates in the early stages of Ru-catalyzed reactions with alkynes. We show that electronically unsaturated complexes of the formula [RuCl(Cp’)(η2-RCCR’)] can be stabilized and crystallized by using the sterically demanding cyclopentadienyl ligand Cp’ (Cp’ = η5-1-methoxy-2,4-tert-butyl-3-neopentyl-cyclopentadienyl). Furthermore we demonstrate that [RuCl2(Cp’)]2 is an active and regioselective catalyst for the [2+2+2] cyclotrimerization of alkynes. The first elementary steps of the reaction of mono(η2-alkyne) complexes containing {RuCl(Cp*)} (Cp* = η5-C5Me5) and {RuCl(Cp’)} fragments with alkynes were investigated by DFT calculations at the M06/6-31G* level in combination with a continuum solvent model. Theor. results are able to rationalize and complement the exptl. findings. The presence of the sterically demanding Cp% ligand increases the activation energy required for the formation of the corresponding di(η2-alkyne) complexes, enhancing the initial regioselectivity, but avoiding the evolution of the system towards the expected cyclotrimerization product when bulky substituents are present. Theor. results also show that the electronic structure and stability of a metallacyclic intermediate is strongly dependent on the nature of the substituents present in the alkyne.
There is still a lot of research devoted to this compound(SMILES：[Cl-][Ru+2]1234567(C8(C)=C4(C)[C-]5(C)C6(C)=C87C)[CH]9=[CH]1CC[CH]2=[CH]3CC9)Synthetic Route of C18H28ClRu, and with the development of science, more effects of this compound(92390-26-6) can be discovered.
Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method