Carcinogenicity of lactones. II. x-Ray crystal structure analyses of ± 3-benzylamino-4-hydroxypentanoic acid lactone hydrochloride and hydrobromide

1968 ◽  
Vol 46 (5) ◽  
pp. 813-814 ◽  
Author(s):  
J. Bryan Jones ◽  
Chung Hoe Koo ◽  
Ian P. Mellor ◽  
S. C. Nyburg ◽  
John M. Young
Keyword(s):  
Crystal Structure ◽  
Crystal Structures ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
Optically Active ◽  
Spontaneous Resolution ◽  
X Ray ◽  
Acid Lactone

X-Ray crystal structure analysis of the hydrochloride of ± 3-benzylamino-4-hydroxypentanoic acid lactone shows the methyl and benzylamino groups to be trans-oriented.The hydrobromide is not isomorphous with the hydrochloride and its crystals are optically active owing to spontaneous resolution during crystallization. Refinement of both crystal structures is in progress.

scholarly journals E. S. Fedorov Promoting the Russian-German Scientific Interrelationship

Minerals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 181 ◽  
Author(s):  
Peter Paufler ◽  
Stanislav K. Filatov
Keyword(s):  
Crystal Structure ◽  
Crystal Structures ◽  
Structure Analysis ◽  
Crystalline State ◽  
Crystal Structure Analysis ◽  
Present Knowledge ◽  
Personal Contact ◽  
X Ray Diffraction ◽  
X Ray ◽  
The Impact

At the dawn of crystal structure analysis, the close personal contact between researchers in Russia and Germany, well documented in the “Zeitschrift für Krystallographie und Mineralogie”, contributed significantly to the evolution of our present knowledge of the crystalline state. The impact of the Russian crystallographer E. S. Fedorov upon German scientists such as A. Schoenflies and P. Groth and the effect of these contacts for Fedorov are highlighted hundred years after the death of the latter. A creative exchange of ideas paved the way for the analysis of crystal structures with the aid of X-ray diffraction.

Zur Reaktion von [MCl2(PR3)2] (M = Ni, Pd) mit E(SiMe3)2 (E = S, Se) Die Kristallstrukturen von [Ni3S2Cl2(PPh3)4], [Pd3S2Cl2(PPh3)4], INi3Se2(SeSiMe3)2(P(C2H4Ph)3)4] und [Pd3Se2(SeSiMe3)2(PPh3)4] / Reaction of [MCl2(PR3)2] (M = Ni, Pd) with E(SiMe3)2 (E = S, Se) The Crystal Structures of [Ni3S2Cl2(PPh3)4], [Pd3S2Cl2(PPh3)4], [Ni3Se2(SeSiMe3)2(P(C2H4Ph)3)4] and [Pd3Se2(SeSiMe3)2(PPh3)4]

1990 ◽  
Vol 45 (2) ◽  
pp. 127-133 ◽  
Author(s):  
Dieter Fenske ◽  
Holm Fleischer ◽  
Harald Krautscheid ◽  
Jörg Magull
Keyword(s):  
Crystal Structure ◽  
Crystal Structures ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
X Ray ◽  
Triangular Clusters

[MC12(PR3)2] (M = Ni, Pd) reacts with E(SiMe3)2 (E = S, Se) to form triangular clusters, [Ni3S2Cl2(PPh3)4] (1), [Pd3S2Cl2(PPh3)4] (2), [Ni3Se2(SeSiMe3)2(P(C2H4Ph)3)4] (4) and [Pd3Se2(SeSiMe3)2(PPh3)4] (3). 1-4 have been characterized by X-ray crystal structure analysis. All these compounds contain a triangular M3-core, which is capped by two μ3-E-ligands (E = S in 1, Se in 3 and 4).

scholarly journals Zur Reaktion von Ni8-Clustern mit Natriumamalgam. Die Kristallstrukturen von {[Ni8Hg(PPh)6(PPh3)4]·[Ni8(PPh)6(PPh3)4]} und [Ni8S6(PPh3)8] / Reaction of Ni8-Clusters with Sodium Amalgam. The Crystal Structures of {[Ni8Hg(PPh)6(PPh3)4] · [Ni8(PPh)6(PPh3)4]} and [Ni8S6(PPh3)8]

1990 ◽  
Vol 45 (2) ◽  
pp. 121-126 ◽  
Author(s):  
Dieter Fenske ◽  
Jörg Magull
Keyword(s):  
Crystal Structure ◽  
Crystal Structures ◽  
Structure Analysis ◽  
Nickel Atom ◽  
Crystal Structure Analysis ◽  
Mercury Atom ◽  
Symmetrical Structure ◽  
X Ray ◽  
Sodium Amalgam

[Ni8Cl4(μ4-PPh)6(PPh3)4] (1) reacts with sodium amalgam to form [Ni9(PPh)6(PPh3)4] (2) and {[Ni8Hg(PPh)6(PPh3)4] · [Ni8(PPh)6(PPh3)4]} (3). 3 has been characterized by X-ray crystal structure analysis. It contains two distorted cubic Ni8-clusters. All faces of the cubes are occupied by μ4-PPh ligands. At one of the cubes one nickel atom is bonded to an external mercury atom. [Ni8Cl2S6(PPh3)6] (4) reacts with sodium amalgam to form [Ni8S6(PPh3)8] (5). In this symmetrical structure all nickel atoms are bonded to three S ligands and to one PPh3.

Crystal structure analysis and extremely long-living light-induced metastable states in RbY[Fe(CN)5NO]2·10H2O and CsY[Fe(CN)5NO]2·10H2O

2002 ◽  
Vol 217 (10) ◽  
Author(s):  
Th. Woike ◽  
P. Held ◽  
M. Mühlberg ◽  
M. Imlau
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Crystal Structures ◽  
Structure Analysis ◽  
Diffraction Data ◽  
Crystal Structure Analysis ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Data Space

AbstractCrystal structures of both isostructural com-pounds were solved from single crystal X-ray diffraction data (space group

scholarly journals Preparative-scale HPLC Resolution of Metallacyclic η3-Allyltricarbonyliron Complexes and Determination of the Absolute Configuration by X-Ray Crystal Structure Analysis

1999 ◽  
Vol 23 (9) ◽  
pp. 578-579
Author(s):  
Rainer Schobert ◽  
Hermann Pfab ◽  
Jutta Böhmer ◽  
Frank Hampel ◽  
Andreas Werner
Keyword(s):  
Crystal Structure ◽  
Silica Gel ◽  
Structure Analysis ◽  
Absolute Configuration ◽  
Crystal Structure Analysis ◽  
Preparative Scale ◽  
X Ray ◽  
The Absolute

Racemates of (η3-allyl)tricarbonyliron lactone complex Fe(CO)3{η1:η3-C(O)XCH2CHCMeCH2} 1a (X = O) and (η3-allyl)tricarbonyliron lactam complex 2a (X = NMe) are resolved on a preparative scale by HPLC on cellulose tris(3,5-dimethylphenyl)carbamate/silica gel RP-8 and the absolute configuration of (-)-2a is determined by X-ray crystal structure analysis.

Second-Generation Inhibitors for the Metalloprotease Neprilysin Based on Bicyclic Heteroaromatic Scaffolds: Synthesis, Biological Activity, and X-Ray Crystal-Structure Analysis

2005 ◽  
Vol 88 (4) ◽  
pp. 731-750 ◽  
Author(s):  
Stefan Sahli ◽  
Brian Frank ◽  
W. Bernd Schweizer ◽  
François Diederich ◽  
Denise Blum-Kaelin ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Biological Activity ◽  
Structure Analysis ◽  
Second Generation ◽  
Crystal Structure Analysis ◽  
X Ray
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