Acta Cryst. (2001). E57, o1133-o1135  [ doi:10.1107/S1600536801017974 ]

[Bis(2-hydroxyethyl)amino]tris(hydroxymethyl)methane (Bis-Tris), an important complexing agent

K. N. Nicholson, B. Twamley and S. Wood

Abstract: The title compound, (HOCH₂CH₂)₂NC(CH₂OH)₃ or C₈H₁₉NO₅, is an important complexing agent. All hydroxyl-H atoms are involved in intermolecular hydrogen bonds (O-HO distances are in the range 2.690-2.847 Å), which link the molecules in the crystal into a three-dimensional infinite network. One of the hydroxymethyl hydroxyl groups also participates in an intramolecular O-HN hydrogen bond, closing a five-membered N-C-C-O-H pseudo-cycle [ON 2.7804 (16) Å and O-HN 118.6 (17)°].

Online 27 October 2001

Copyright © International Union of Crystallography
IUCr Webmaster