title: Synthesis and crystal structure of a phenazine N-oxide.
abstract: The preparation and crystal structure of 8-chloro-1H-pyrrolo[2,3-b]phenazine 5-oxide (1) are described. Compound1formed dark purple crystals from deeply colored solution in methanol. Crystal plates were in the triclinic system, P-1 space group with unit cell parametersa= 6.9514(8),b= 9.1568(10),c= 10.2067(11), α = 84.509(2),β= 82.936(2), γ = 72.357(2) and a cell volume of 613.25(12) A-3. The title compound which contains the first example of the extensively conjugated pyrrolo-phenazine N-oxide system exhibits strong light absorption in the green to cyan wavelength range which disappears upon protonation.
authors.affiliation: Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA, .
authors.forename: Kejia
authors.initials: K
authors.lastname: Ding
authors.forename: Sergey M
authors.initials: SM
authors.lastname: Dibrov
authors.forename: Thomas
authors.initials: T
authors.lastname: Hermann
keywords: Phenazine; Wohl-Aue reaction