Diaquaiodidotetrasarcosinepotassium: an overview of sarcosine metal halogenide structures

作者：Fleck Michel^*; Ghazaryan Vahram V; Petrosyan Aram M

来源：Acta Crystallographica Section C-Crystal Structure Communications, 2013, 69: 11-+.

DOI：10.1107/S0108270112048597

The monoclinic crystal structure of tetrasarcosine potassium iodide dihydrate {or catena-poly[[potassium-tetra--sarcosine-4O:O;4O:O] iodide dihydrate]}, {[K(C3H7NO2)4]I center dot 2H2O}n or Sar4 center dot KI center dot 2H2O (space group C2/c), comprises two crystallographically different sarcosine molecules and one water molecule on general positions, and one K+ cation and one I anion located on twofold axes. The irregular eight-coordinated K+ polyhedra are connected into infinite chains along [001] via sarcosine molecules. This compound is the first sarcosine metal halogenide salt with a 4:1 ratio. A short overview of other sarcosine metal halogenide salts is presented and relationships to similar glycine salts are discussed.

• 出版日期2013-1