
TY  - JOUR
A1  - Guy, RW 
A1  - Jones, RA 
T1  - Pyrrole studies. X. The preparation and electronic spectra of phenyldipyrromethenes
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1966
VL  - 19
IS  - 10
SP  - 1871
EP  - 1885
KW  - 
UR  - https://doi.org/10.1071/CH9661871 
N2  - The NH frequency and the electronic spectra of 22 phenyldipyrromethenes have been measured. The spectral data confirm the presence of steric interaction between phenyl groups in the 3,3?-positions, but it was not possible to ascertain whether the interaction is relieved by a loss of coplanarity of the dipyrromethene system or by rotation of the dipyrromethene rings. The synthesis of 12 new phenyl-pyrroles is also described. 
ER  -

