Metal complexes, their application and methods of carrying out of metathesis reaction

A compound of a formula:

• wherein
• M is ruthenium or osmium;
• X and X1 are independently anionic ligands;
• L is neutral ligand;
• R1 is hydrogen, C1-20 alkyl, or C5-10 aryl;
• is optionally substituted o-phenylene, wherein 2 or more substituents of the o-phenylene may form an optionally substituted fused C4-8 carbocyclic ring an optionally substituted fused aromatic C5-14 ring;
• and
• R6, R7, and R8 are independently H, C1-6 alkyl, optionally substituted C4-10 heterocyclyl, or optionally substituted C5-14 aryl;
• wherein R7 and R8 may be linked together to form a substituted or unsubstituted C4-8 cyclic system.