One- and two-step [2 + 2] cycloaddition reactions of group 4 imides with the phosphaalkyne ButCP. Crystal and molecular structures of [Zr(η5-C5H5)2(PCButNC6H3Me2-2,6)] and [TiCl2(P2C2But2NBut)(py)] (py) = pyridine)
Abstract
The structures of novel complexes resulting from one- and two-step [2 + 2] cycloaddition reactions of four group 4 imides with the phosphaalkyne ButCP are described.