X-ray studies of crystalline complexes involving amino acids and peptides. XLIV. Invariant features of supramolecular association and chiral effects in the complexes of arginine and lysine with tartaric acid [0.03%]
氨基酸和肽的结晶复合物的X射线研究。第四十四部分：精氨酸和赖氨酸与酒石酸复物的超分子缔合的不变特征及手性效应
M Selvaraj,S Thamotharan,Siddhartha Roy et al.
M Selvaraj et al.
The tartaric acid complexes with arginine and lysine exhibit two stoichiometries depending upon the ionization state of the anion. The structures reported here are DL-argininium DL-hydrogen tartrate, bis(L-argininium) L-tartrate, bis(DL-lys...
Tautomerism and hydrogen bonding in guaninium phosphite and guaninium phosphate salts [0.03%]
胍𬭩亚磷酸盐和胍磷盐中的互变异构与氢键作用
El-Eulmi Bendeif,Slimane Dahaoui,Nourredine Benali-Cherif et al.
El-Eulmi Bendeif et al.
The crystal structures of three similar guaninium salts, guaninium monohydrogenphosphite monohydrate, C(5)H(6)N(5)O(+).H(2)O(3)P(-).H(2)O, guaninium monohydrogenphosphite dihydrate, C(5)H(6)N(5)O(+).H(2)O(3)P(-).2H(2)O, and guaninium dihydr...
Solid-state compounds of stereoisomers: cis and trans isomers of 1,2-cyclohexanediol and 2,3-tetralindiol [0.03%]
立体异构化合物的固态性质：1,2-环己烷二醇和2,3-四氢萘二醇的顺式与反式异构体
Michael A Lloyd,Garth E Patterson,Greg H Simpson et al.
Michael A Lloyd et al.
The phases of 1,2,3,4-tetrahydro-2,3-naphthalenediol (or 2,3-tetralindiol) and of 1,2-cyclohexanediol have been investigated. The structure of a very stable 1:1 compound (or co-crystal) of the cis and trans isomers of 2,3-tetralindiol, the ...
Rapid structure determination of the hydrogen-containing compound Cs2C2O4.H2O by joint single-crystal X-ray and powder neutron diffraction [0.03%]
用单晶X射线和多晶中子衍射联合快速确定含氢化合物Cs_2C_2O_4·H_2O的结构
Mark T Weller,Paul F Henry,Mark E Light
Mark T Weller
The structure determination of caesium oxalate monohydrate using single-crystal X-ray diffraction, powder neutron diffraction data and a combination of both has been undertaken. Results show that even for hydrogen-containing materials data ...
Structures of artificial sweeteners--cyclamic acid and sodium cyclamate with other cyclamates [0.03%]
甜味剂——环己胺盐酸盐及其他环状己六胺类物质的结构式
Ivan Leban,Darja Rudan-Tasic,Nina Lah et al.
Ivan Leban et al.
In the course of a study on artificial sweeteners, new crystal structures of cyclamic acid, sodium cyclamate, potassium cyclamate, ammonium cyclamate, rubidium cyclamate and tetra-n-propylammonium cyclamate have been determined. Cyclamic ac...
Structural similarities in tetraaryltins described by virtual non-crystallographic rotations or translations: Kitaigorodskii's morphotropism is revisited [0.03%]
用虚拟非晶学旋转或平移描述的四芳基锡的结构相似性：Kitaigorodskii的形态同源性再探讨
Alajos Kálmán,László Fábián
Alajos Kálmán
Recently Kálmán [(2005), Acta Cryst. B61, 536-547] revealed that semirigid molecules or their patterns held together e.g. by hydrogen bonds may perform non-crystallographic rotations (through 180, 90 degrees etc.) around themselves whenev...
Synchrotron powder diffraction in a systematic study of 4'-[2-(tosylamino)benzylideneamino]-2,3-benzo-15-crown-5 complexes [0.03%]
同步辐射粉末衍射在4'-[2-(对甲苯磺酰氨基)苯基烯丙基氨基]-2,3-苯并-15-冠-5配合物系统研究中的应用
Andrey V Dorokhov,Dmitrii Yu Chernyshov,Anatolii S Burlov et al.
Andrey V Dorokhov et al.
The crystal structures of two compounds, CuL(2) and LiNCS.HL [HL = 4'-[2-(tosylamino)benzylideneamino]-2,3-benzo-15-crown-5], have been determined from synchrotron powder diffraction data. Both compounds crystallize in the monoclinic space ...
LiNaSiB3O7(OH)--novel structure of the new borosilicate mineral jadarite determined from laboratory powder diffraction data [0.03%]
利用实验室粉末衍射数据确定新型硼硅酸盐矿物jadarite的全新结构LiNaSiB₃O₇(OH)
Pamela S Whitfield,Yvon Le Page,Joel D Grice et al.
Pamela S Whitfield et al.
The structure of a new mineral jadarite, LiNaSiB(3)O(7)(OH) (IMA mineral 2006-36), has been determined by simulated annealing and Rietveld refinement of laboratory X-ray powder diffraction data. The structure contains a layer of corner-shar...
Electron diffraction and microscopy study of the structure and microstructure of the hexagonal perovskite Ba3Ti2MnO9 [0.03%]
六角形钙钛矿Ba3Ti2MnO9的结构和显微组织的电子衍射和电镜研究
Christian Maunders,Harold J Whitfield,David G Hay et al.
Christian Maunders et al.
This paper reports a structural and microstructural investigation of the hexagonal perovskite Ba(3)Ti(2)MnO(9) using electron microscopy and diffraction. Convergent-beam electron diffraction (CBED) revealed the structure has the non-centros...
In situ observation of the tetragonal-cubic phase transition in the CeZrO4 solid solution--a high-temperature neutron diffraction study [0.03%]
CeZrO4固溶体的四方-立方相变原位高温中子衍射研究
Takahiro Wakita,Masatomo Yashima
Takahiro Wakita
The crystal structure of the compositionally homogeneous ceria-zirconia solid solution CeZrO(4) is refined by Rietveld analysis of neutron diffraction data measured in situ over the temperature range 296-1831 K. The CeZrO(4) exhibits a tetr...