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Abstract:
Tetrakis(chloromethyl)phosphonium chloride monohydrate,
C4H8Cl4P+.Cl-.H2O or P(CH2Cl)(4)(+).Cl-.H2O, is the first
crystal structure determination of a
tetrakis(halogenomethyl)phosphonium compound to date. The only
comparable structures known so far are of phosphonium ions
containing just one halogenomethyl group. The solvent water
molecule interacts with the Cl- anion via hydrogen bonds, with
O...Cl distances of 3.230 (2) and 3.309 (2) Angstrom. The
structure also contains several C-H...Cl- and C-H...O contacts,
though with longer D...A distances [D...A 3.286 (3)-3.662 (2)
Angstrom] or bent D-H...A angles. For these reasons, the C-
H...Cl- and C-H...O interactions should not be considered as
strong hydrogen bonds.
