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“…The IR bands, including those for Cr-O stretching frequencies, are unequivocally assigned. 153 There has been a review of the activity of [MoO 2 (acac) 2 ] towards phenylhydrazine and its para-substituted derivatives, and N,N-disubstituted hydrazinium halides. 154 This compound has also proved highly effective as a selective oxidation catalyst, with H 2 O 2 , for conversions of the anilines, RC 6 H 4 NH 2 , into the corresponding C-nitroso derivatives, RC 6 H 4 NO (R = 4-Me, 3-Me, 2-Me, 4-Et, 2-Et, 4-Br, 3-Br, 2-Br, 4-Cl, 3-Cl, 2-Cl, 4-F, 4-Pr i , 4-Bu t ).…”

12 Chromium, molybdenum and tungsten

“…The symmetry for this complex in the solid-state is below D 3 . 190 On the basis of the negative-ion FAB-MS measurements made for ∆-fac-[Cr(val) 3 ] and ∆-[Cr(val) 2 (val-N)(H 2 O)], it has been proposed that the FAB-MS technique can be used for the rapid testing of very small amounts in the preparation and separation processes of amino acid complexes of type [Cr(AA) 3 ]. 191 A mechanism for chromium()-DNA binding caused by disproportionation of chromium() complexes has been proposed on the basis of in vitro stoichiometric and kinetic studies.…”