The Family of A 6 M 2 O6 Oxometalates: Synthesis and Crystal Structure Determination of Cs6 Mn2 O6 , Magnetic Exchange within Dimeric Poly-oxoanions, and Classification of Crystal Structures

2019 ◽  
Vol 645 (13) ◽  
pp. 882-887
Author(s):  
Jürgen Nuss ◽  
Reinhard K. Kremer ◽  
Gohil S. Thakur ◽  
Martin Jansen
Keyword(s):  
Crystal Structure ◽  
Crystal Structures ◽  
Structure Determination ◽  
Crystal Structure Determination ◽  
Magnetic Exchange ◽  
Synthesis And Crystal Structure ◽  
The Family

scholarly journals Mercury Cyanamide / Carbodiimide Networks: Synthesis and Crystal Structures of Hg2(NCN)Cl2 and Hg3(NCN)2Cl2

2002 ◽  
Vol 57 (10) ◽  
pp. 1108-1114 ◽  
Author(s):  
Xiaohui Liu ◽  
Richard Dronskowski
Keyword(s):  
Crystal Structure ◽  
Crystal Structures ◽  
Structure Determination ◽  
Crystal Structure Determination ◽  
Two Dimensional ◽  
Synthesis And Crystal Structure ◽  
Packing Efficiency ◽  
Inorganic Network

AbstractWe report about the synthesis and crystal structure determination of Hg2(NCN)Cl2 (P21/c (No. 14), Z = 4, a = 806.7(1), b = 907.1(2), c = 788.0(1) pm, β = 106.446(3)°, 1374 independent reflections, 67 variables, R1 = 0.0463) and Hg3(NCN)2Cl2 (Pca21 (No. 29), Z = 4, a = 702.0(2), b = 1078.5(2), c = 1050.3(2) pm, 1977 independent reflections, 71 variables, R1 = 0.0380). Both compounds contain infinite -Hg-NCN-Hg- zigzag chains which are linked by additional Hg atoms to result in two-dimensional frameworks characterized by 20-membered rings sharing edges. The remarkably flexible structural backbone [Hg3(NCN)2]2+ hosts additional Cl! anions and HgCl2 molecules in Hg2(NCN)Cl2 but only Cl- anions in Hg3(NCN)2Cl2, by that reaching a high packing efficiency in both cases.While Hg2(NCN)Cl2 exclusively contains carbodiimide N=C=N2- species, Hg3(NCN)2Cl2 is the first structural example of an inorganic network built up from both carbodiimide N=C=N2- and cyanamide N-C≡N2- groups.

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