M. Yasumoto et al., Synthesis and X-ray structures of arsenic(V) porphyrins with symmetric diaxial ligands of Me-2 and F-2, CHEM LETT, (8), 1999, pp. 791-792
Arsenic porphyrins [(TPP)As(Me)(2)]+PF6- (2-PF6), [(TPP)As(F)(2)]+PF6+ (3-P
F6), and [(OEP)As(F)(2)]+PF6- (4-PF6) were prepared and the X-ray crystallo
graphic structures revealed that the axial ligand and the porphyrin core af
fected to control the conformation of the porphyrins.