Synthesis, FT–IR characterization and crystal structure of aqua(5,10,15,20-tetraphenylporphyrinato-κ⁴N)manganese(III) trifluoromethanesulfonate

Abstract

This porphyrinate macrocycle of the title compound exhibits a strong saddle and moderate ruffling deformations. In the crystal, the individual manganese porphyrin complex cations and the tri­fluoro­methane­sulfonate anions are arranged in alternating planes stacked along [001].

A family of mono-, di-, and tetranuclear DyIIIcomplexes bearing the ligand 2,6-diacetylpyridine bis(picolinoylhydrazone) and exhibiting slow relaxation of magnetization

“…Regardless of this drawback, the presence of the triflate ions in the structure of 2 is confirmed by the following bands: (i) a medium broad band at 1288 cm −1 attributed to the asymmetric stretching frequency of the SO 3 group, (ii) a medium broad band at 1228 cm −1 corresponding to the symmetric stretching frequency of the CF 3 moiety, (iii) a medium band at 1162 cm −1 attributed to ν as (CF 3 ), (iv) a very strong band at 1031 cm −1 corresponding to ν s (SO 3 ), (v) a strong band at 640 cm −1 attributed to the bending vibration of the SO 3 group, and (vi) a weak and a medium-strong band at 574 and 516 cm −1 corresponding to the δ as (CF 3 ) and δ as (SO 3 ) vibrations, respectively. 36 The IR spectrum of 3 exhibits a strong band at 1116–1084 cm −1 and a medium-intensity band at 630 cm −1 , attributable to the IR-active ν 3 (F 2 )[ ν d (Cl–O)] and ν 4 (F 2 )[ δ d (OClO)] vibrations of the uncoordinated ( T d geometry) ClO 4 − counterions, respectively. 37 Several bands appear in the 1600–1370 cm −1 range in the IR spectrum of complex 4 .…”