Some Studies in Inorganic Complexes. XIII. Chromium(III) and Molybdenum(III) with 2-Aminomethylpyridine (2-Picolylamine)

Abstract

A study has been made of complexes of chromium(III) and molybdenum(III) with the chelating ligand 2-aminomethylpyridine (2-picolylamine). They are of the type Crpic₃³⁺, Crpic₂(H₂O)₂³⁺, and Mopic₃³⁺, in which pic is the ligand 2-picolylamine. Conductance measurements in methanol and nitromethane are in agreement with their structures as six-coordinate complexes. The magnetic moments were found to be in the vicinity of 3.7 B.M. in all oases, showing that the chromium(III) and manganese(III) atoms are spin-free. The following salts were prepared and studied : [Crpic₃]₂[SO₄]3.3H₂O, [Crpic₃]Cl₃.3H₂O, [Crpic₂(H₂O)₂]Br₃, [Crpic₂(H₂O)2][ClO₄]₃, and [Mopic₃][ClO₄]₃.3H₂O.