The Role of Prussian Blue-Thallium and Potassium Similarities and Differences in Crystal Structures of Selected Cyanido Complexes of W, Fe and Mo

Maciej Hodorowicz; Janusz Szklarzewicz; Anna Jurowska

doi:10.3390/ma15134586

The Role of Prussian Blue-Thallium and Potassium Similarities and Differences in Crystal Structures of Selected Cyanido Complexes of W, Fe and Mo

Materials (Basel). 2022 Jun 29;15(13):4586. doi: 10.3390/ma15134586.

Authors

Maciej Hodorowicz^{1

2}, Janusz Szklarzewicz¹, Anna Jurowska¹

Affiliations

¹ Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland.
² Institute of Chemistry, Jan Kochanowski University in Kielce, 7 Uniwersytecka Str., 25-406 Kielce, Poland.

Abstract

The synthesis and single X-ray crystal structures of Tl₂[W(CN)₆(bpy)]·H₂O, Tl[W(CN)₆(bpy)], Tl₅₇[{Fe(CN)₆}₁₂{NO₃}₉]·9H₂O, Tl₄[W(CN)₈] and Tl₄[Mo(CN)₈] are described. Salts crystalize in the monoclinic or trigonal (Fe) space group. For all complexes, the very unusual "side-on" coordination of Tl to C and N of cyanido ligands is observed and compared to potassium cations. The very strong bonding to cyanido ligands with an 8-13 coordination number of thallium is described and discussed. The difference between potassium and thallium bonding is an indication of the biological activity of thallium and the role of Prussian blue in the thallium detoxification procedure.

Keywords: cyanides; iron; molybdenum; structure; thallium; tungsten.

Grants and funding

The research was funded under the program “Excellence Initiative-Research University” at the Jagiellonian University in Kraków.