Molecular structure of hydrated complex of 1,4-dimethylpiperazine di-betaine with l-tartaric acid

2008 ◽  
Vol 892 (1-3) ◽  
pp. 353-359 ◽  
Author(s):  
Z. Dega-Szafran ◽  
A. Katrusiak ◽  
M. Szafran
Keyword(s):  
Molecular Structure ◽  
Tartaric Acid ◽  
Hydrated Complex

Molecular structure of hydrated complex of trigonelline with l(+)-tartaric acid

2011 ◽  
Vol 991 (1-3) ◽  
pp. 178-185 ◽  
Author(s):  
Z. Dega-Szafran ◽  
G. Dutkiewicz ◽  
Z. Kosturkiewicz ◽  
M. Szafran ◽  
P. Barczyński
Keyword(s):  
Molecular Structure ◽  
Tartaric Acid ◽  
Hydrated Complex

Synthesis and the crystal and molecular structure of the Sn(IV)–Nd(III) coordination polymer based on the tartaric acid [NdSn2{H(Tart)3} · 12H2O] n

2016 ◽  
Vol 61 (2) ◽  
pp. 209-215 ◽  
Author(s):  
V. S. Sergienko ◽  
E. A. Chebanenko ◽  
I. I. Seifullina ◽  
A. V. Churakov ◽  
E. E. Martsinko
Keyword(s):  
Molecular Structure ◽  
Coordination Polymer ◽  
Tartaric Acid ◽  
Crystal And Molecular Structure

Crystal and molecular structure of urea-(+) tartaric acid

1996 ◽  
Vol 31 (9) ◽  
pp. 1127-1131 ◽  
Author(s):  
Yu Wentao ◽  
Lu Mengkai ◽  
Meng Fanqing
Keyword(s):  
Molecular Structure ◽  
Tartaric Acid ◽  
Crystal And Molecular Structure

The Molecular Structure and Crystal Organization Of Rac -terfenadine/β-cyclodextrin/tartaric Acid Multicomponent Inclusion Complex

2002 ◽  
Vol 14 (1) ◽  
pp. 67-74 ◽  
Author(s):  
Alessia Bacchi ◽  
Giancarlo Pelizzi ◽  
George M. Sheldrick ◽  
Gabriele Amari ◽  
Maurizio Delcanale ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Inclusion Complex ◽  
Tartaric Acid

Chiral Discrimination of the Diastereomeric Salts with (R)-Nipecotic Acid and Tartaric Acid Derivative

2013 ◽  
Vol 781-784 ◽  
pp. 135-138
Author(s):  
Xiao Xia Sun ◽  
Ying Chun Li ◽  
Xiao Xiao Zhuang ◽  
Yu Hu
Keyword(s):  
Molecular Structure ◽  
Single Crystal ◽  
Tartaric Acid ◽  
Self Assembly ◽  
Optical Purity ◽  
Chiral Discrimination ◽  
Single Crystal Diffraction ◽  
Nipecotic Acid ◽  
High Optical Purity ◽  
Diastereomeric Salts

An effective resolving agent, (D)-dibenzoyl tartaric acid (2b), was screened to yield direct resolution of (S)- ethyl nipecotate (1) with high optical purity and yield. Molecular recognition was studied by 1H NMR, IR, DSC and single crystal diffraction of the pair of diastereomeric salts. The less-soluble salt formed a supra molecular structure by enantio differentiating self-assembly.

Molecular Structure of the Outermost Cell Wall Component of Spirillum Serpens

1977 ◽  
Vol 35 ◽  
pp. 342-343
Author(s):  
Wah Chiu ◽  
David Grano
Keyword(s):  
Molecular Structure ◽  
Cell Wall ◽  
Outer Membrane ◽  
Gel Electrophoresis ◽  
Electron Microscopic Examination ◽  
Electron Microscopic ◽  
Cell Wall Component ◽  
Protein Components ◽  
Exposure Technique ◽  
Structural Aspects

The periodic structure external to the outer membrane of Spirillum serpens VHA has been isolated by similar procedures to those used by Buckmire and Murray (1). From SDS gel electrophoresis, we have found that the isolated fragments contain several protein components, and that the crystalline structure is composed of a glycoprotein component with a molecular weight of ∽ 140,000 daltons (2). Under an electron microscopic examination, we have visualized the hexagonally-packed glycoprotein subunits, as well as the bilayer profile of the outer membrane. In this paper, we will discuss some structural aspects of the crystalline glycoproteins, based on computer-reconstructed images of the external cell wall fragments.The specimens were prepared for electron microscopy in two ways: negatively stained with 1% PTA, and maintained in a frozen-hydrated state (3). The micrographs were taken with a JEM-100B electron microscope with a field emission gun. The minimum exposure technique was essential for imaging the frozen- hydrated specimens.

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