Geometry of carbon-hydrogen.cntdot..cntdot..cntdot.oxygen hydrogen bonds in carbohydrate crystal structures. Analysis of neutron diffraction data

1992 ◽  
Vol 114 (26) ◽  
pp. 10146-10154 ◽  
Author(s):  
Thomas Steiner ◽  
Wolfram Saenger

2005 ◽  
Vol 61 (4) ◽  
pp. 381-386 ◽  
Author(s):  
J. S. Ricci ◽  
R. C. Stevens ◽  
R. K. McMullan ◽  
W. T. Klooster

The crystal structure of Sr(OH)2·8H2O has been determined at 20, 100 and 200 K from neutron diffraction data. The structure consists of double layers of H2O and OH− ions separated by Sr2+ along the c axis. The Sr2+ ions are eight-coordinated by water O atoms in a square antiprism configuration. Each H2O molecule is engaged in three hydrogen bonds. The OH− ions form chains of acceptor and donor bonds along the fourfold axis with O atoms engaged in four bonds with H2O molecules, such that both non-equivalent O atoms have square-pyramidal environments of five H atoms and the overall bonding configurations of distorted octahedra.







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