CRYSTAL STRUCTURE OF 2—（BENZOYLMETHYLENE）IMIDAZO—LIDINE

<正> The title compound C11H12NzO,Mr= 188. 25. Crystalizes in monoclinic space group P21/n with the following cell parameters;a= 7. 108(4),b= 6. 371(3),c = 21.588(11)A,β=97. 32(2)°. V = 969. 7(8)A3,Z=4,Dc=1. 29g/cm,μ(MoKa) = 0. 9cm-1,F(000) = 400. The final R=0. 068 for 1046 independent reflections with F≥2. 5σ(F). The molecule exists in ketene aminal form rather than in its imine or enol form.     

RESEARCH ON CRYSTAL STRUCTURE OF 4—AMINOBENZOPHENONE（ABP）

<正> 4-aminobenzophenone(ABP), (C6H5)CO(C6H4NH2),Mr= 197. 23, monoelinic, space group P21,a= 12. 036 (3), b = 5. 450 (7), c= 8. 299(2) A,β = 97. 86°,V = 539. 32(3) A3,Z = 2,DC = 2. 215,Dm = 1. 209g/cm3,λ(MoKa) = 0. 71073 A,F(000)= 208,μ=0. 722cm-1,R=0. 083,Rw = 0. 084 for 721 observed reflections. There exists a cleavage plane (100) in the crystal ABP.     

CRYSTAL AND MOLECULAR STRUCTURE OF 1，2，3，4—TETRAKIS（6‘,7’—DIMETHYL）BENZOXAZOLYL CYCLOBUTANE

<正> 1,2,3,4-Tetrakis(6',7'--dimethyl)benzoxazolyl cyclobutane was obtained by irradiation of E-l,2-bis(6',7'-dimethyl-1',3'-benzoxazolyly-2')-ethene in ethanol with a 450-watt high pressure mercury lamp. Its crystal and molecular structure has been determined by X-ray diffraction method. The crystal is triclinic, space group A with a = 7.008(2), b=9.586(1), c = 13.174(2)A,α= 104.08(1),β= 98.56(2),γ=99.97(2)°,V= 828.4A3, Mr= 636.76, (C40H36N4O4), Z =1, Dx =1.28g/cm3,μ= 0.78 cm-1 and F(OOO)=336.