Biimidazole and Bis(amide)bipyridine Molybdenum Carbonyl Complexes as Anions Receptors

Compounds [Mo(CO)4(N−N)] (N−N = 4,4‘-bis((4-methylphenyl)carbamoyl)-2,2‘-bipyridine, bipy‘, 1; or 2,2‘-biimidazole, H2biim, 2), [MoCl(η3-methallyl)(CO)2(N−N)] (N−N = bipy‘, 3; H2biim, 4), and [Mo(η3-methallyl)(CNtBu)(CO2)(N−N)]BAr‘4 (Ar‘ = 3,5-bis(trifluoromethyl)phenyl; N−N= bipy‘, 5; H2biim, 6) were synthesized and characterized, and their behavior toward anions was investigated in solution (IR and 1H NMR) and in solid state (X-ray diffraction).