Solvothermal Synthesis and Crystal Structure of the Non-Centrosymmetric Thioantimonate [Ni(tren)2]2[Ni(tren)(en)]2(Sb4S8)2·0.25H2O

2011 ◽  
Vol 637 (7-8) ◽  
pp. 1007-1012 ◽  
Author(s):  
Henning Lühmann ◽  
Christian Näther ◽  
Wolfgang Bensch
Keyword(s):  
Crystal Structure ◽  
Solvothermal Synthesis ◽  
Synthesis And Crystal Structure

Solvothermal Synthesis and Crystal Structure Determination of Tris- (ethyleneamine-ammonium) Tetraselenoantimonat: Non-Centrosymmetry Mediated by an Extended Unusual N-H···N Hydrogen Bonded Network?

1998 ◽  
Vol 53 (10) ◽  
pp. 1144-1148 ◽  
Author(s):  
Frank Wendland ◽  
Christian Näther ◽  
Michael Schur ◽  
Wolfgang Bensch
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Solvothermal Synthesis ◽  
Amino Nitrogen ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Ammonium Hydrogen ◽  
Solvothermal Conditions

AbstractThe title compound has been synthesized under solvothermal conditions by the reaction of elemental chromium, antimony and selenium in a solution of 40% 1,2-ethanediamine (en) in methanol. The crystal structure consists of tetrahedral SbSe43- anions which are connected by monoprotonated 1,2-ethanediamine (enH+) cations via N-H--Se hydrogen bonding. The enH+ cations are joined via strong N-H -N hydrogen bonds between the ammonium hydrogen and the amino nitrogen atom forming four distinct chains, each built up of three crystallographically independent enH+ cations. Two of these chains are running parallel to [100], the other two are parallel to [010]. Based on this arrangement different centrosymmetric or non-centrosymmetric hydrogen bonding patterns are possible, but only in one chain the sequence of NH2 and NH3+ groups was determined by X-ray diffraction

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