Crystal structure of 1-bis(((1R,2S,5R)-2-isopropyl-5- methylcyclohexyl)cyclopentadienyl)-1-trimethylphosphine-2,3- bis(trimethylsilyl)-1-hafnacycloprop-2-ene – hexane (1:0.5), (HfC8H18Si2)(C15H22)2(PC3H9) · 0.5C6H14

Abstract

C 44H78HfPSi2,t etragonal, P41212(no. 92)Source of material (h 5 -menthyl-C5H4)2HfCl2 (0.650 g, 0.991 mmol) and magnesium turnings (0.025 g, 1.029 mmol) were dissolved in 15 ml of THF, followed by the addition of bis(trimethylsilyl)acetylene (0.23 ml, 1.015 mmol) and trimethylphosphine (1.0 ml, 1.0 . mmol, c=1M in THF). The solution was stirred at 50°Cfor 24 h, the color of the solution changed from colorless to brown. The solvent was removed under vacuum, and the obtained residue was extracted with 20 ml of n-hexane. Leaving the n-hexane solution at -78°C gave fine, yellow crystals, which were dried under vacuum.