[(E)-[1-methyl-3-[[(E)-pent-2-enoxy]methyl]imidazol-2-ylidene]methyl]-oxoazanium,chloride

[(E)-[1-methyl-3-[[(Z)-pent-2-enoxy]methyl]imidazol-2-ylidene]methyl]-oxoazanium,chloride

[(Z)-[1-methyl-3-(2-methylbut-3-yn-2-yloxymethyl)imidazol-2-ylidene]methyl]-oxoazanium,chloride

[(E)-[1-methyl-3-[[4-(trifluoromethyl)phenyl]methoxymethyl]imidazol-2-ylidene]methyl]-oxoazanium,chloride

[(Z)-[1-(but-3-yn-2-yloxymethyl)-3-methylimidazol-2-ylidene]methyl]-oxoazanium,chloride