Synthesis and Reaction of the Novel Complex [AsPh4][OsCl5(H2O)]. X-ray Structure Analysis of [AsPh4][OsCl5(H2O)]·2EtOH and [AsPh4][OsCl5(EtOH)]·EtOH

2000 ◽  
Vol 39 (25) ◽  
pp. 5725-5730 ◽  
Author(s):  
Andrei Maiboroda ◽  
Gerd Rheinwald ◽  
Heinrich Lang
Keyword(s):  
Structure Analysis ◽  
The Novel ◽  
X Ray ◽  
Novel Complex

Synthesis, Crystal Structure and Magnetic Properties of Novel Complex [μ-(NC)-Fe(CN)3(NO)-μ-(CN)-Cu(ept)]n·4nH2O (ept = N-(2-Aminoethyl)propane-1,3-diamine)

2001 ◽  
Vol 66 (10) ◽  
pp. 1490-1498 ◽  
Author(s):  
Zdeněk Smékal ◽  
Jiří Kameníček ◽  
Ingrid Svoboda ◽  
Albert Escuer
Keyword(s):  
Crystal Structure ◽  
Magnetic Measurement ◽  
Antiferromagnetic Interaction ◽  
Title Complex ◽  
The Novel ◽  
One Dimensional ◽  
X Ray ◽  
Magnetic Investigation ◽  
Novel Complex ◽  
Cyanide Ligands

The novel complex [μ-(NC)-Fe(CN)3(NO)-μ-(CN)-Cu(ept)]n·4nH2O (ept = N-(2-aminoethyl)- propane-1,3-diamine) was obtained by the reaction of Cu(ClO4)2·6H2O with N-(2-amino- ethyl)propane-1,3-diamine and Na2[Fe(CN)5NO]·2H2O in water. This compound was characterized by IR, UV-VIS and EPR spectroscopies and magnetic measurement. Single-crystal X-ray structure analysis revealed that the title complex has a one-dimensional polymeric structure containing hexacoordinate iron(II) with five cyanide ligands (two of them, in trans position, bridging) and one nitrosyl group, and pentacoordinate copper(II) with N-(2-aminoethyl)propane-1,3-diamine and two sites occupied by bridging cyanide ligands. Magnetic investigation revealed a very weak antiferromagnetic interaction between the copper atoms (superexchange interaction parameter J = -1.7(1) cm-1; H = -JSiSi+1) within the chain through the diamagnetic [Fe(CN)5NO]2- ions.

X-Ray Crystal Structure Analysis of Deacetyldehydroeuphorianin: The Correct Structure of the Novel Pentacyclic Macrocyclic Diterpene, Euphorianin

1987 ◽  
Vol 42 (2) ◽  
pp. 243-247 ◽  
Author(s):  
Joseph I. Okogun ◽  
Christopher O. Fakunle ◽  
Donald E. U. Ekong ◽  
Hans J. Lindner ◽  
Gerhard G. Habermehl
Keyword(s):  
Crystal Structure ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
The Novel ◽  
X Ray ◽  
Correct Structure

Abstract The conversion of euphorianin to deacetyldehydroeuphorianin which was used in an X-ray crystal structure analysis is described. A new pentacyclic structure related to ingol tetraacetate is described for euphorianin.

A Serendipitous Synthesis of the Novel Spiroacetal Core of Cynandione B

2007 ◽  
Vol 60 (2) ◽  
pp. 89 ◽  
Author(s):  
Leonie M. Tewierik ◽  
Christopher D. Donner ◽  
Jonathan M. White ◽  
Melvyn Gill
Keyword(s):  
Single Crystal ◽  
Structure Analysis ◽  
The Novel ◽  
X Ray

The novel spiroacetal core of cynandione B 2 is prepared from the isochromenone (S)-mellein 4 by treatment with methylmagnesium bromide. The expected lactol product undergoes spontaneous dimerization to form the spiroacetal system 8 as a single diastereoisomer, the stereochemistry of which is established from a single crystal X-ray structure analysis of a methanol solvate.

Synthesis and Tin(IV) Coordination Chemistry of the Novel Tripod N(CH2CH2CH2SH)3

2003 ◽  
Vol 58 (10) ◽  
pp. 1030-1033 ◽  
Author(s):  
F. Ekkehardt Hahn ◽  
Andreas Dittler-Klingemann ◽  
Thomas Lügger
Keyword(s):  
Coordination Chemistry ◽  
Structure Analysis ◽  
Dinuclear Complex ◽  
The Novel ◽  
Tetradentate Ligand ◽  
Subsequent Reaction ◽  
X Ray

The novel tetradentate ligand N(CH2CH2CH2SH)3, H3 - 5 was synthesized from tripropanolamine via the trichloride, subsequent reaction with potassium thioacetate and reduction with LiAlH4. Ligand H3 -5 reacts with MeSnCl3 under formation of the centrosymmetric dinuclear complex [MeSn(5)]2, 6, which was shown by X-ray structure analysis to contain two tetrahedrally coordinated tin atoms and two bridging thiolato functions.

Beiträge zur Chemie des Phosphors, 135 [1]. Synthese und Strukturen neuer polycyclischer Organophosphane PnRm (m < n) / Contributions to the Chemistry of Phosphorus, 135 [1]. Synthesis and Structures of Novel Polycyclic Organophosphanes PnRm (m < n)

1984 ◽  
Vol 39 (3) ◽  
pp. 275-283 ◽  
Author(s):  
Marianne Bäudler ◽  
Volker Arndt
Keyword(s):  
Nmr Spectroscopy ◽  
Structure Analysis ◽  
White Phosphorus ◽  
The Novel ◽  
Complex Reaction ◽  
X Ray ◽  
Structural Principles

The novel polycyclic organophosphanes b-P9R5, P10R6, P10R4, P11R5, and P13R5 (R = Me, Et, i-Pr) have been obtained by reacting RPCl2 with white phosphorus and magnesium or by thermolysing P7R5 (perhaps in the presence of P8R6, P9R5 or (PR)5). A strategy for the enrichment or isolation of polycyclic organophosphanes PnRm (m < n) from complex reaction mixtures is described. The structures of the above mentioned compounds have been unambiguously clarified by 31P NMR spectroscopy or X-ray structure analysis. The results clearly indicate that the corresponding phosphorus hydrides PnNm have the same structures. The general structural principles of polycyclic phosphanes are dicussed.

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