K. Ichikawa et al., CO2-encapsulated clathrate hydrate formed by sulfonate-assisting hydrogen bonds and template contribution from helper species of zinc(II), CHEM LETT, (7), 2000, pp. 796-797
The CO2-encapsulated clathrate hydrate was formed, under a room temperature
and atmosphere, by sulfonate-assisting hydrogen bonds among water molecule
s, where the geometry of the three sulfonate groups in zinc complex with ni
trilotris(2-benzimidazolylmethyl-6-sulfonate) L1, was controlled by coordin
ation of Zn2+.