Structural Characterization of Bi-Nuclear Cobalt(iii) Axial-Methyl Alcohol-Hydrochloric Acid Tetraphenyl-Porphyrin Complex

Catalytic and physical characteristics of axially modified cobalt (III) tetraphenyl porphyrin immobilized on chemically different supports

“…The results indicate that the synthesized complex has relatively small specific area and total pore volume characterizing the polycrystalline nature of the complex [25]. Generally, the surface areas, in both series of supported complex samples, reflect those of the pure supports, being much higher for the silica-supported ones.…”

“…The XRD patterns of the different silica-supported or resinsupported complex samples showed strong masking effect of the support without detection of any of the characteristic bands of the polycrystalline complex [25]. This may be linked with the low content of the supported complex or its high degree of dispersion.…”

“…The mixture was exposed to 45 kHz ultrasonic frequencies at 75 8C with continuous stirring for 4 h. Distilled dry methanol was added and the formed crystalline precipitate was allowed to settle slowly for 24 h. The structure of the synthesized complex, as confirmed by various techniques, was found to be binuclear cobalt (III) axial-methyl alcohol-hydrochloric acid-tetraphenyl porphyrin [25]. The binuclear structure was dominant in the solid phase, whereas the charged form, C 45 H 33 N 4 OClCo + , was preferable in solution (cf.…”

“…In our previous study, a new binuclear cobalt tetraphenyl porphyrin complex, modified by axial inclusion of CH 3 OH and HCl groups, was structurally characterized [25]. It was indicated that the binuclear structure is dominant in the solid phase, whereas the charged mononuclear structure is preferred to exist in solution.…”

“…However, a limited number of works has been concerned with the effect of axial inclusion of different ligands (including H 2 O) in the metal ion of the complex on the different interactions and www.elsevier.com/locate/apcata Applied Catalysis A: General 300 (2006) [14][15][16][17][18][19][20][21][22][23] the catalyst activities [16,[18][19][20][21]. Such effects were a key factor for the development of some novel catalysts (e.g., [22][23][24][25]). …”