Electron Spin Resonance of Two Radicals Formed in Xhyphen;Irradiated Cyanoacetylurea, Another Sigmahyphen;Electron Radical of the RCONdot;H Type

摘要

Two radical species were formed when cyanoacetylurea CNCH2CONHCONH2crystals were irradiated with x ray. One was apgr;hyphen;electron radical, CNCdot;HCONHCONH2, and the other asgr;hyphen;electron radical, CNCH2CONHCONdot;H. The latter was found to have similar hyperfine coupling tensors as H2NCOCH2CONH which was formed in xhyphen;irradiated malonamide, and the former as CNCdot;HCOOH which was formed inggr;hyphen;irradiated cyanoacetic acid.