om3005405_si_001.cif (58.23 kB)
Switching by Photochemical trans–cis Isomerization of Azobenzene Substituents in Organoplatinum Complexes
dataset
posted on 2012-09-10, 00:00 authored by Mohamed
E. Moustafa, Matthew S. McCready, Richard J. PuddephattA diimine ligand, LL = 2-C5H4NCHN-4-C6H4NNPh, which carries a trans-azobenzene substituent, forms the dimethylplatinum(II) complex [PtMe2(LL)], which undergoes trans oxidative addition
with MeI, PhCH2Br, Br2, and I2 to
give the corresponding organoplatinum(IV) complexes [PtIMe3(LL)], [PtBrMe2(CH2Ph)(LL)], [PtBr2Me2(LL)], and [PtI2Me2(LL)], respectively.
The ligand and the platinum(II) and platinum(IV) complexes are shown
to undergo trans–cis isomerization of the
azobenzene substituent upon irradiation, and the cis isomers then underwent slow thermal isomerization back to the more
stable trans isomers.