Structure of 1,1,5,5-tetranitro-[4]peristylane. Structure solution from molecular packing analysis [0.03%]
1,1,5,5-四硝基-[4]螺旋烷的结构。基于分子堆积分析的构型解析
H L Ammon,Z Du,J R Holden et al.
H L Ammon et al.
The structure of the title compound, decahydro-2,2,5,5-tetranitro-1,6:3,4-dimethanocyclobuta[1,2: 3, 4]dicyclopentene, C12H12N4O8, was solved with the molecular packing program MOLPAK, starting with an AM1-geometry-optimized model of an iso...
X-ray diffraction studies of oriented dilauroyl phosphatidylcholine bilayers in the L delta and L alpha phases [0.03%]
取向二月桂酰卵磷脂双层在L_δ和L_α相的X射线衍射研究
J Katsaras,R H Stinson,J H Davis
J Katsaras
X-ray diffraction studies on oriented multilayers of dilauroyl phosphatidylcholine in the lyotropic liquid-crystalline L alpha phase and a not previously reported mono-domain three-dimensional L delta phase at two temperatures (293 and 343 ...
X-ray diffraction study of the disorder-to-order transition at approximately 160 K in the pi-molecular compound pyrene ... pyromellitic dianhydride [0.03%]
关于π分子化合物菲…吡啶甲酸的无序-有序转变的X射线衍射研究（大约160K）
F H Herbstein,S Samson
F H Herbstein
The crystal structure of pyrene ... pyromellitic dianhydride [(C16H10:C10H2O6); PYRPMA] has been studied over the range 300-19 K, using the low-temperature accessory designed by Samson, Goldish & Dick [J. Appl. Cryst. (1980), 13, 425-432] f...
X-ray diffraction study of the crystal structure of the pi-molecular compound pyrene ... pyromellitic dianhydride at 19 K [0.03%]
关于π-配合物菲...吡咯均二酸酐在19K时的晶体结构的X射线衍射研究
F H Herbstein,R E Marsh,S Samson
F H Herbstein
The crystal structure of the pyrene ... pyromellitic dianhydride (PMDA) pi-molecular compound [(C16H10:C10H2O6); PYRPMA] has been refined from intensities measured at 19 K using the low-temperature accessory designed by Samson, Goldish & Di...
Structures of histamine H1-receptor antagonists derived from the cimetidine group of histamine H2-receptor antagonists [0.03%]
取自西米替丁类H2-受体拮抗剂的H1-受体拮抗剂的衍生物结构式
C Bannister,K Burns,K Prout et al.
C Bannister et al.
The crystal and molecular structures of ten compounds with strong structural resemblances to the cimetidine group of histamine H2-receptor antagonists, but exhibiting selective H1-receptor antagonist activity, (1)-(7), or H1 and H2 activity...
Structure of the beta-blocker/vasodilator agent prizidilol, DL-6-(2-[3-(tert-butylamino)-2-hydroxypropoxylphenyl)-3-pyridazinylhydr azine hemisulfate monohydrate [0.03%]
β阻滞剂和血管扩张剂prizidilol的结构，DL-6-(2-[3-(叔丁基氨基)-2-羟基丙氧]-苯基)-3-哒嗪基肼内半硫酸一水合物的结构式
K Prout,K Burns,A M Roe
K Prout
Prizidilol, a compound combining vasodilator and beta-blocker functionalities in the same molecule, has been synthesized and characterized by Smith Kline and French Research Ltd. Crystal data: C17H25N5O2 x 1/2H2SO4 x H2O, M(r) = 398.47, ort...
S P Kampermann,J R Ruble,B M Craven
S P Kampermann
The charge-density distribution has been determined from 333 independent X-ray reflections with sin theta/lambda < 1.47 A-1, which were collected with Ag K alpha radiation. As found in a recent refinement using room-temperature data, full-m...
Structure of suberic acid at 18.4, 75 and 123 K from neutron diffraction data [0.03%]
基于中子衍射数据的亚油酸在18.4、75和123K时的结构
Q Gao,H P Weber,B M Craven et al.
Q Gao et al.
Neutron diffraction data for suberic acid [HOOC(CH2)6COOH] were collected at 18.4, 75 and 123 K using a twinned crystal. The neutron data reduction included derivation of a complete set of corrected intensities, as if from a single crystal....
Experimental evidence for the existence of non-nuclear maxima in the electron-density distribution of metallic beryllium. A comparative study of the maximum entropy method and the multipole refinement method [0.03%]
金属铍中电子密度分布非核极大值存在性的实验证据。最大熵法与多重极法比较研究
B B Iversen,F K Larsen,M Souhassou et al.
B B Iversen et al.
The electron-density distribution (EDD) of metallic beryllium has been derived from the structure factors of Larsen & Hansen [(1984). Acta Cryst. B40, 169-179] using the maximum entropy method (MEM). Subsequent topological analysis reveals ...
Relationship of 13C NMR chemical shift tensors to diffraction structures [0.03%]
关于13C NMR化学位移张量与衍射结构的关系
D M Grant,F Liu,R J Iuliucci et al.
D M Grant et al.
13C chemical shift tensor measurements on single crystals provide a powerful method to study changes in the electron environment of nuclei with changes in molecular structure. Thus, diffraction structures are critical to an understanding of...