Potassium Bromide → N,N-bis(1H-benzimidazol-2-ylmethyl)-N-isopropylamine chromium(III) chloride

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Reaction Steps

3f was synthesised by an analogous procedure to that described for 3a using 2f (0.432 g, 1.35 mmol) and CrCl3(THF)3 (0.51 g, 1.35 mmol). Yield 1.20 g (84%). Anal. Calc. for C19H21Cl3CrN5 (in %): C, 47.77; H, 4.43; N, 14.66. Found C, 47.87; H, 4.35; N, 14.46. IR (KBr, cm−1), υ 3227 (NH, s), υ 1623-1550 (ArC═C, C═N, m), δ 1455, 1478, 1497 (N—H, s, m), υ 1275 (CN, m), δ 753 (CH, s). UV-VIS (DMF, 298 K): λmax/nm=459, 704, 731 (shoulder). +FAB-MS: (m/z): 441 ([M-Cl]+), 406 ([M-2Cl]), 320 ([M-CrCl3]). μeff·=3.46 MB.

Provenance & Evidence