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 ...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） A,β = 104.4760（10）°,V = 2650.7（4） A^3,Z = 4,C26H30N6O10,Mr = 586.56,F（000） = 1232,T = 292（2） K,Dc = 1.470 g/cm^3,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.展开更多
The title compound 2, 3-diethoxycarbonyl-4-phenyl-5-morpholinylthiophene (C20H23NO5S, Mr=389. 47) was obtained by the reaction of a-thiobenzoylth-ioformmorpholine with diethyl acetylene dicarboxylate - The crystal is ...The title compound 2, 3-diethoxycarbonyl-4-phenyl-5-morpholinylthiophene (C20H23NO5S, Mr=389. 47) was obtained by the reaction of a-thiobenzoylth-ioformmorpholine with diethyl acetylene dicarboxylate - The crystal is prismatic, spacegroup P1 ( 2), with unit cell constants 2337 observed reflections . X-ray analysis reveals that interatomic dis-tances for C(1 ) -C(2) and C(3) -C (4) are 1. 393 (4), 1. 370 (4) , respectively,which show that they are C=C double bond. The atoms of C(1 ), C(2), C(3), C(4)and S form a thiophene ring. The dihedral ang1es between thiophene ring and C(5) -C(6) -C(7) -C(8) plane, phenyl ring are 31. 42 and 43. 78, respectively. The mor-pholine ring adopts chair conformation.展开更多
The synthesis,characterization,and its response to metal ions of a novel thiourea N,N＇-diethoxycarbonyl-A＂,iV″＇-（1,2- ethylidene） dithiourea was reported.The results show that this dithiourea with new structure ...The synthesis,characterization,and its response to metal ions of a novel thiourea N,N＇-diethoxycarbonyl-A＂,iV″＇-（1,2- ethylidene） dithiourea was reported.The results show that this dithiourea with new structure can react with Cu^（2＋） and Ni^（2＋） separately,and has a best selectivity to Fe^（3＋） ions.Bench-scale flotation tests were also carried out,verifying it has higher copper flotation recovery and better selectivity to sulfide ores containing Cu compared with universal collectors.展开更多
基金supported by Central China Normal University and the National Natural Science Foundation of China (20472022 and 20672042)
文摘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） A,β = 104.4760（10）°,V = 2650.7（4） A^3,Z = 4,C26H30N6O10,Mr = 586.56,F（000） = 1232,T = 292（2） K,Dc = 1.470 g/cm^3,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.
文摘The title compound 2, 3-diethoxycarbonyl-4-phenyl-5-morpholinylthiophene (C20H23NO5S, Mr=389. 47) was obtained by the reaction of a-thiobenzoylth-ioformmorpholine with diethyl acetylene dicarboxylate - The crystal is prismatic, spacegroup P1 ( 2), with unit cell constants 2337 observed reflections . X-ray analysis reveals that interatomic dis-tances for C(1 ) -C(2) and C(3) -C (4) are 1. 393 (4), 1. 370 (4) , respectively,which show that they are C=C double bond. The atoms of C(1 ), C(2), C(3), C(4)and S form a thiophene ring. The dihedral ang1es between thiophene ring and C(5) -C(6) -C(7) -C(8) plane, phenyl ring are 31. 42 and 43. 78, respectively. The mor-pholine ring adopts chair conformation.
基金the financial supports from National High-Tech Research and Development Plan of China(No. 2007AA06Z122)National Basic Research Program of China(No.2007CB613602)National Natural Science Foundation of China(Nos.51074183 and 50604016)
文摘The synthesis,characterization,and its response to metal ions of a novel thiourea N,N＇-diethoxycarbonyl-A＂,iV″＇-（1,2- ethylidene） dithiourea was reported.The results show that this dithiourea with new structure can react with Cu^（2＋） and Ni^（2＋） separately,and has a best selectivity to Fe^（3＋） ions.Bench-scale flotation tests were also carried out,verifying it has higher copper flotation recovery and better selectivity to sulfide ores containing Cu compared with universal collectors.
