Abstract: | Preparation and Characterization of Chromium of Chromium(V)- and Manganese(V)- nitridophthalocyanines(1-) and -(2-): MNPc(1-)]+ and MNPc(2-)] (M=Cr, Mn) Nitridophthalocyaninatochromium(V), CrNPc(2-)], is prepared by oxidation of Cr(OH)2PC(2-)] with chlorine in the presence of excess ammonia as a paramagnetic (μeff = 1,99 B.M.), Microcrystalline blue powder. Through chemically very stable it reacts as well as the isostructural nitridophthalocyaninatomanganese(V) with bromine or concentrated nitric acid giving ring- oxidized darkblue nitridophthalocyaninatomental(poly)bromides or -nitrates, MNPc(1-)]X (M=Cr, Mn; X=Bry, NO3; y≈?2). The nitrido-metal stretching vibration (ν(N?M)) is independent of the oxidation state of the Pc-ligands at ca. 1017 cm?1 for the chromium and at ca. 1055 cm?1 for the manganesenitridophthalocyanines. ν(N?Mn) is resonance Raman (r.r.) enhanced, ν(N?Cr) not. The characteristic differences in the u.v. -vis., f.i.r./m.i.r. and r.r. spectra of MNPc(2-)] and MNPc(1-)+ and the influence of aggregation of phthalocyanine-radicals are discussed. |