Synonyms: 1,3-Bis(2,6-diisopropylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene;1,3-Bis(2,6-diisopropylphenyl)imidazol-2-ylidene;1,3-Bis(2,6-diisopropylphenyl)imidazolylidene;1,3-Bis-(2,6-di-isopropylphenyl)-4,5-dihydroimidazol-2-ylidene;N,N'-Bis(2,6-diisopropylphenyl)imidazol-2-ylidene;