Yan-ling Guo, Xiaoyan Zhou, W. Dou, Weisheng Liu, Da‐qi Wang
{"title":"Crystal Structure of a Lithium Complex with 2,2'-(Biphenyl-2,2'-diylbis(oxy))diacetic Acid","authors":"Yan-ling Guo, Xiaoyan Zhou, W. Dou, Weisheng Liu, Da‐qi Wang","doi":"10.2116/ANALSCIX.24.X227","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X227","url":null,"abstract":"The crystal structure of [Li(HL)] (H2L = 2,2′-(biphenyl-2,2′-diylbis(oxy))diacetic acid) was studied by X-ray diffraction methods. This complex crystallized in the monoclinic space group P21/c, with a = 13.970(11), b = 7.098(6), c = 16.097(12)A, β = 103.910(9)°, Z = 4, V = 1549(2)A3, and R = 0.0768. The crystal structure shows that the complex units are linked by classical intermolecular hydrogen bonds between an uncoordinated carboxyl of one complex molecule and an oxygen atom from a coordinated carboxyl of the adjacent complex molecule to form a single-helical chain. Two infinite homochiral helices self-assemble into a dimer through a non-classical C-H…π hydrogen bonding interaction.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82752526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Liang Huang, Pinxian Xi, Min Xu, Tonghuan Liu, Z. Zeng
{"title":"Crystal Structure of Metformin·ethyl N-(3-tossulfonyl)carbamate","authors":"Liang Huang, Pinxian Xi, Min Xu, Tonghuan Liu, Z. Zeng","doi":"10.2116/ANALSCIX.24.X289","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X289","url":null,"abstract":"The title compound, C14H24N6O4S, was prepared by the reaction of ethyl N-(3-tossulfonyl)carbamate with metformin. It was crystallized in the triclinic system, space group P1 with a = 6.894(3)A, b = 8.323(4)A, c = 17.184(8)A, α = 84.119(7)°, β = 84.028(6)°, γ = 75.479(6)°, V = 946.4(7)A3, Z = 2, R = 0.0426. The molecules are linked by two kinds of hydrogen-bonds, N-H…N and N-H…O, generating an extended two-dimensional supramolecular network structure in the ab plane.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84622511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis and Structural Characterization of Bis[2-dimethylamino-α-trimethylsilylbenzyl]Mn(II)","authors":"Hongbo Tong, Dian-sheng Liu","doi":"10.2116/ANALSCIX.24.X67","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X67","url":null,"abstract":"Mn[2-NMe2-α-SiMeC6H4]2 (I) is triclinic, P1. The unit-cell dimensions at 203 K are a=9.318(2)A, b=10.781(3)A, c=13.453(3)A, α=88.87(3)°, β=88.34(3)°, γ=76.91(2)°, V=1315.8(6)A3, Dx =1.181 g/cm3, and Z = 2. The final R value is 0.072 for 3442 measured reflections with I > 2σ(I). The structure is synthesized by the reaction of MnCl2 with 2-dimethylamino-R-trimethylsilylbenzyl-Li. The central Mn(II) metal has four coordination sites by forming a distorted tetrahedron.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82947900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis and Crystal Structure of Mononuclear Iron(III) Complex of 6-Hydroxy-2-(5-bromo-2-hydroxyphenyl)-5-(5-bromosalicylideneamino)-benzoxazole","authors":"Masahiro Muto, Masayuki Koikawa, T. Tokii","doi":"10.2116/ANALSCIX.24.X47","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X47","url":null,"abstract":"The mononuclear complex [Fe(HL-Br)Cl(py)2]·C2H5OC2H5, [H3L-Br = 6-hydroxy-2-(5-bromo-2-hydroxyphenyl)-5-(5-bromosalicylideneamino)benzoxazole] was synthesized and characterized by single-crystal X-ray analysis. The compound crystallizes in the triclinic system, spaces group P1 and Z = 2 with cell parameters a = 9.0436(9)A, b = 14.284(4)A, c = 15.320(3)A, α = 64.002(14)°, β = 81.430(11)°, γ = 80.642(15)°, V = 1748.4(6)A3. The ligand (HL-Br)2- acts as a tridentate form, and the iron(III) has octahedral geometry. The crystal packing is stabilized by two types of inter molecular π-π stacking interactions.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83336836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis and Crystal Structure of a Three-dimensional Copper(I) Complex with Ethylenethiourea and 4,4'-Bipyridine","authors":"H. Phetmung, Anon Samsao","doi":"10.2116/ANALSCIX.24.X191","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X191","url":null,"abstract":"","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"189 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83489268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Crystal Structure of Ethyl (2Z)-2-(4-acetyloxybenzylidene)-7-methyl-3-oxo-5-phenyl-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate","authors":"B. B. Baldaniya, M. Jotani","doi":"10.2116/ANALSCIX.24.X217","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X217","url":null,"abstract":"In the molecular structure, the central pyrimidine ring is significantly puckered, assuming an intermediate conformation between a screw boat and boat form. In the solid state, the short intramolecular C-H…S, intermolecular C-H…O and π-π stacking interactions contribute to the crystal packing.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76775677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Hansongnern, Luksamee Sahavisit, C. Pakawatchai
{"title":"Crystal Structure of cis-Bis(5-chloro-2-(phenylazo)pyridine)-dichlororuthenium(II)","authors":"K. Hansongnern, Luksamee Sahavisit, C. Pakawatchai","doi":"10.2116/ANALSCIX.24.X57","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X57","url":null,"abstract":"The complex [Ru(Clazpy)2Cl2] (Clazpy = 5-chloro-2-(phenylazo)pyridine) was synthesized and characterized by X-ray diffraction analysis. The geometry around ruthenium(II) was distorted octahedral with coordinating from two chloro ligands and four N-donor atoms of two Clazpy units. The chloros are cis while the N(pyridine) atoms are trans. The Ru-N(pyridine) distance (2.037(2)A) is slightly short compared to those in other ruthenium(II) complexes with azoimine ligands.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76949095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. C. Lozada, R. Enríquez, B. Ortíz, M. Soriano-garcia
{"title":"Heterocyclic Derivatives of Curcumin: Crystal Structure of 3,5-Bis[β-(4-acetoxy-3-methoxyphenyl)ethyl]pyrazole Benzene Solvate","authors":"M. C. Lozada, R. Enríquez, B. Ortíz, M. Soriano-garcia","doi":"10.2116/ANALSCIX.24.X1","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X1","url":null,"abstract":"C25H28N2O6·0.50(C6H6) is monoclinic, C2/c. The unit-cell dimensions at 293 K are a = 13.968(2), b = 25.185(3), c = 15.050(2)A, β = 102.272(2)°, V = 5173.4(12)A3, Dx = 1.262 g/cm3, and Z = 8. The R value is R = 0.0766 for 1463 reflections. There is an intermolecular hydrogen bond with an N1…N1 distance of 2.851(7)A. The pyrazole ring adopts a distorted envelope conformation. The molecules in the crystal are packed at the normal van der Waals distances.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76227649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Gnoatto, J. Guillon, V. Pires, A. Dassonville-Klimpt, S. Nascimento, S. Massip, C. Jarry, G. Gosmann, P. Sonnet
{"title":"Crystal Structure of 3-O-Acetyloleanolic Acid","authors":"S. Gnoatto, J. Guillon, V. Pires, A. Dassonville-Klimpt, S. Nascimento, S. Massip, C. Jarry, G. Gosmann, P. Sonnet","doi":"10.2116/ANALSCIX.24.X239","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X239","url":null,"abstract":"The X-ray crystal structure of the antileishmanial 3-O-acetyloleanolic acid was established. It crystallizes in the orthorhombic space group P212121. The absolute configuration was determined by calculating the F(+)/F(-) ratios of Bijvoet pairs. Solid-state data could be used to clarify the mechanism of action implicating this antileishmanial hemisynthetic compound.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84875992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Nirmala, E. Kamala, L. Sudha, E. Ramesh, R. Raghunathan
{"title":"Crystal Structure of 1,4-Dimethyl 2.5[2′-dispiroindane-1,3-dione]piperazine","authors":"S. Nirmala, E. Kamala, L. Sudha, E. Ramesh, R. Raghunathan","doi":"10.2116/ANALSCIX.24.X101","DOIUrl":"https://doi.org/10.2116/ANALSCIX.24.X101","url":null,"abstract":"The title compound (C22H18N2O4) crystallizes in monoclinic space group P21/n with one-half molecule in the asymmetric unit. The complete molecule is generated by inversion symmetry. The structure was solved by direct methods and refined by full-matrix least-squares procedures to a final R = 0.046 and wR = 0.1187 using 2766 reflections. The piperazine and the cyclo-pentane rings adopt chair and envelope conformations, respectively. The molecular packing is stabilized by C-H…O and π…π interactions in addition to van der Walls forces.","PeriodicalId":7796,"journal":{"name":"Analytical Sciences: X-ray Structure Analysis Online","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87029857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}