Key indicators: single-crystal X-ray study; T = 293 K; mean (C-C) = 0.003 Å; R factor = 0.030; wR factor = 0.099; data-to-parameter ratio = 18.5.In the title compound, C 6 H 8 NO + ÁHSO 4 À , there is an intricate cation-cation, cation-anion and anion-anion three-dimensional hydrogen-bond network. Refinement R[F 2 > 2(F 2 )] = 0.030 wR(F 2 ) = 0.099 S = 1.14 2241 reflections 121 parameters 1 restraint H-atom parameters constrained Á max = 0.32 e Å À3 Á min = À0.45 e Å À3 Absolute structure: Flack (1983), with 1095 Friedel pairs Flack parameter: À0.02 (8) organic compounds
Key indicators: single-crystal X-ray study; T = 293 K; mean (C-C) = 0.004 Å; R factor = 0.050; wR factor = 0.135; data-to-parameter ratio = 18.7.The crystal structure of the title compound, C 7 H 10 N + ÁNO 3 À , consists of anion-cation layers parallel to the (100) plane, generated by N-HÁ Á ÁO hydrogen bonds. 16 of the 22 atoms (the exceptions being two O and four H atoms) lie on a mirror plane.
Related literatureFor related structures see: Benali-Cherif, Direm et al. (2007); Benali-Cherif, Allouche et al. (2007); Bendeif et al. (2007).Experimental Crystal data C 7 H 10 N + ÁNO 3 À M r = 170.17 Orthorhombic, Pnma a = 16.5632 (2) Å b = 6.7242 (2) Å c = 7.6849 (3) Å V = 855.90 (4) Å 3 Z = 4 Mo K radiation = 0.10 mm À1 T = 293 (2) K 0.15 Â 0.1 Â 0.05 mm Data collection Nonius KappaCCD diffractometer Absorption correction: none 9040 measured reflections 1331 independent reflections 895 reflections with I > 2(I) R int = 0.075
Diazoketones 1, 8, 10 and 14 react with trialkyl phosphites to give different products depending upon the structure of the diazo compound, the type of the solvent and the nature of the phosphite ester used. Possible reaction mechanisms are discussed and the structural assignements are based on analytical, chemical and spectroscopic results.
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