摘要
The crystal structure of the title compound, C32H28N2O4 was determined by X-ray diffraction method. Crystallographic data are as follows: Mr =504. 59, monoclinic, space group P21/c with cell dimensions of a = 11. 778 (3), b=8. 416(3), c=26. 310(6) A, β= 95. 74 (2)°, V= 2594. 72(2) A3, Z=4, Dc=1. 292g. cm-3, μ=0. 80cm-1, F(000) = 1064, R=0. 045, m= 0. 048 for 1124 reflections with I≥3(I). The molecule of the title compound has T style structure. Thelactone-benzene group is nearly perpendicular to the xanthene moiety. The C-O bondin the lactone ring is 1. 516(8) A, which is longer than that in the normal lactonering, and this indicates severe weakness of the bond.
The crystal structure of the title compound, C32H28N2O4 was determined by X-ray diffraction method. Crystallographic data are as follows: Mr =504. 59, monoclinic, space group P21/c with cell dimensions of a = 11. 778 (3), b=8. 416(3), c=26. 310(6) A, β= 95. 74 (2)°, V= 2594. 72(2) A3, Z=4, Dc=1. 292g. cm-3, μ=0. 80cm-1, F(000) = 1064, R=0. 045, m= 0. 048 for 1124 reflections with I≥3(I). The molecule of the title compound has T style structure. Thelactone-benzene group is nearly perpendicular to the xanthene moiety. The C-O bondin the lactone ring is 1. 516(8) A, which is longer than that in the normal lactonering, and this indicates severe weakness of the bond.
