Synthesis and reactivity of asymmetrically substituted ansa-bridged zirconocene complexes: X-ray crystal structures of [Zr{R(H)C(η5-C5Me4)(η5-C5H4)}Cl2] (R = Bun, But) and [Zr{Bun(H)C(η5-C5Me4)(η5-C5H4)}(CH2Ph)2]
Keywords: ایسوسیانید; Metallocenes; Zirconium; Insertion reactions; Isocyanides