The synthesis and X-ray crystal structure of a new molecular clip 2 was reported. It (C24H24N4O2, Mr = 400.47) crystallizes in the space group C2/c with a = 15.587(2), b = 8.5805(12), c = 15.259(2) , β = 102.448(3)°, V = 1992.9 (5) 3, Z = 4, Dc = 1.335 g/cm3, μ = 0.087 mm-1 and F(000) = 848. It remains monomeric in the crystal and a tape-like structure is formed in the crystal structure of molecular clip. The most unusual structural feature of 2 is the boat conformation of its cyclohexyl ring imposed by the ring fusion at C(9)-C(9a).
The synthesis and X-ray crystal structure of a methylene-bridged glycoluril dimer 2 was reported.The methylene-bridged glycoluril dimer 2(C38H36Br4N8O12,Mr=1116.35) crystallizes in space group P1 with a=10.5802(6),b=16.8469(9),c=24.7673(14) ,α=98.00,β=96.263(1),γ=101.606(1)o,V=4239.3(4)3,Z=4,Dc=1.749 g/cm3,μ=3.869 mm-1 and F(000)=2224.It crystallizes in an S-shaped conformation that displays two ethoxycarbonyl groups on each face of the molecule.
A new macrocycle based on diethoxycarbonyl glycoluril 3,C26H30N6O10,has been synthesized and characterized by single-crystal X-ray diffraction. It crystallizes in monoclinic,space group P21/c with a = 12.7291(10),b = 25.157(2),c = 8.5489(7) ,β = 104.4760(10)°,V = 2650.7(4) 3,Z = 4,C26H30N6O10,Mr = 586.56,F(000) = 1232,T = 292(2) K,Dc = 1.470 g/cm3,μ = 0.115 mm-1,the final R = 0.0590 and wR = 0.1299 for 4918 observed reflections with I > 2σ(I). In the structure of the title compound,a three-dimensional microporous architecture is formed via intermolecular hydrogen bonding interactions.
