title: Tetra-n-butylammonium bromide-water (1/38).
abstract: Tetra-n-butylammonium bromide forms the title semi-clathrate hydrate crystal, C16H36N+.Br-.38H2O, under atmospheric pressure. The cation and anion lie at sites with mm symmetry and seven water molecules lie at sites with m symmetry in space group Pmma. Br- anions construct a cage structure with the water molecules. Tetra-n-butylammonium cations are disordered and are located at the centre of four cages, viz. two tetrakaidecahedra and two pentakaidecahedra in ideal cage structures, while all the dodecahedral cages are empty.
authors.affiliation: National Institute of Advanced Industrial Science and Technology (AIST), Tsukisamu-higashi, Sapporo 062-8517, Japan. w.shimada@aist.go.jp
authors.forename: Wataru
authors.initials: W
authors.lastname: Shimada
authors.forename: Motoo
authors.initials: M
authors.lastname: Shiro
authors.forename: Hidemasa
authors.initials: H
authors.lastname: Kondo
authors.forename: Satoshi
authors.initials: S
authors.lastname: Takeya
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Oyama
authors.forename: Takao
authors.initials: T
authors.lastname: Ebinuma
authors.forename: Hideo
authors.initials: H
authors.lastname: Narita