Synthesis and Crystal Structure of 2-Nitro-9,9-bis(methylpropionate)fluorine  

作　　者：冯驸 崔治财 段正超 胡卫兵 

机构地区：[1]School of Chemistry and Environmental Engineering, Hubei Institute for Nationalities

出　　处：《Chinese Journal of Structural Chemistry》2012年第11期1535-1538,共4页结构化学（英文）

基　　金：Supported by Project of Hubei Provincial Department of Education(Q2011902);the Key Project of Chinese Ministry of Education(211111)

摘　　要：The title compound of 2-nitro-9,9-bis（methylpropionate）fluorine （C21H21NO6, Mr = 383.39） was synthesized for the first time. Complete assignments were achieved by 1H NMR, IR, EI-MS, elemental analysis and single-crystal X-ray diffraction technique. The crystal belongs to monoclinic, space group P21/c with a = 11.4581（15）, b = 10.3624（14）, c = 16.573（2） A.,/？ = 96.629（2）°, V = 1954.6（5） A3, Z = 4, Dc = 1.303 g/cm3, p = 0.096 mm-1, F（000） = 808, R = 0.0493 and wR = 0.1499 for 3107 observed reflections with I 〉 2tr（/）. X-ray analysis reveals that three fused rings of the fluorene system are almost coplanar and the two ester groups are nearly perpendicular to the fused-ring system. Weak C-H...O hydrogen bonding connects the molecules into centrosymmetric dimmers.The title compound of 2-nitro-9,9-bis（methylpropionate）fluorine （C21H21NO6, Mr = 383.39） was synthesized for the first time. Complete assignments were achieved by 1H NMR, IR, EI-MS, elemental analysis and single-crystal X-ray diffraction technique. The crystal belongs to monoclinic, space group P21/c with a = 11.4581（15）, b = 10.3624（14）, c = 16.573（2） A.,/？ = 96.629（2）°, V = 1954.6（5） A3, Z = 4, Dc = 1.303 g/cm3, p = 0.096 mm-1, F（000） = 808, R = 0.0493 and wR = 0.1499 for 3107 observed reflections with I 〉 2tr（/）. X-ray analysis reveals that three fused rings of the fluorene system are almost coplanar and the two ester groups are nearly perpendicular to the fused-ring system. Weak C-H...O hydrogen bonding connects the molecules into centrosymmetric dimmers.

关 键 词：FLUORENE SYNTHESIS crystal structure 

分 类 号：O623.6[理学—有机化学]