| 主权项 |
1. A metallocene compound represented by the formula (1):
AeMXn-e wherein: e is 1 or 2; each A is a substituted monocyclic or polycyclic ligand that is pi-bonded to M and optionally includes one or more ring heteroatoms selected from boron, a group 14 atom that is not carbon, a group 15 atom, or a group 16 atom, and when e is 2 each A may be the same or different; provided that at least one A is substituted with at least one cyclopropyl substituent directly bonded to any sp2 carbon atom at a bondable ring position of the ligand, wherein the cyclopropyl substituent is represented by the formula: where each R′ is, independently, hydrogen, a substituted or unsubstituted hydrocarbyl group, or a halogen; e is 1 or 2; M is a transition metal atom having a coordination number of n and selected from group 3, 4, or 5 of the Periodic Table of Elements, or a lanthanide metal atom, or actinide metal atom; n is 3, 4, or 5; and each X is a univalent anionic ligand, or two Xs are joined and bound to the metal atom to form a metallocycle ring, or two Xs are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand. |
