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Updated: Dec 24, 2025

Synthesis and Exfoliation of Discotic Zirconium Phosphates to Obtain Colloidal Liquid Crystals
Published on: May 25, 2016
Photochemical synthesis of a zirconium cyclobutadienyl complex
P Minh N Đ1, Novruz G Akhmedov1, Jeffrey L Petersen1
1C. Eugene Bennett Department of Chemistry, West Virginia University, 100 Prospect Street, Morgantown, WV 26505, USA. camilsmann@mail.wvu.edu.
Abstract:
Photolysis of (MePMPMe)2ZrBn2 (MePMPMe = 3,5-dimethyl-2-(2-pyridyl)pyrrolide) in the presence of diphenylacetylene yields the first η4-cyclobutadienyl zirconium complex, (MePMPMe)2Zr(η4-C4Ph4), through formal [2+2] cycloaddition of two alkynes at a putative low-valent zirconium intermediate. This unique reactivity expands the scope of alkyne coupling reactions at low-valent zirconium centers that traditionally produce zirconacyclopentadienes.
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