title: Unexpected formation of the nickel seco-tribenzoporphyrazine with a tribenzotetraazachlorin-type absorption spectrum.
abstract: Minor products in the reaction between substituted 1,3-diiminoisoindolines and 2,5-diamino-3,4-dicyanothiophene were identified as the nickel seco-tribenzoporphyrazines 4 and 5, which have been characterized by UV-vis, MCD, NMR, and mass spectroscopy. Experimentally observed tetraazachlorin-type UV-vis spectra of new seco-tribenzoporphyrazines were explained on the basis of DFT and TDDFT calculations.
authors.affiliation: Department of Chemistry & Biochemistry, University of Minnesota Duluth, Duluth, MN 55812, USA. vnemykin@d.umn.edu
authors.forename: Victor N
authors.initials: VN
authors.lastname: Nemykin
authors.forename: Anna E
authors.initials: AE
authors.lastname: Polshyna
authors.forename: Elena A
authors.initials: EA
authors.lastname: Makarova
authors.forename: Nagao
authors.initials: N
authors.lastname: Kobayashi
authors.forename: Evgeny A
authors.initials: EA
authors.lastname: Lukyanets
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D009532:Nickel / Q000737:chemistry*; D011166:Porphyrins / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D053719:Tandem Mass Spectrometry
chemical_list: D011166:Porphyrins; D009532:Nickel