Crystal Structure of a Polysamarium (III) Nitrate Chain Crosslinked by a Di-CMPO Ligand

Authors

Julie A. Stoscup, Grand Valley State University
Richard J. Staples, Michigan State University
Shannon M. Biros, Grand Valley State UniversityFollow

Keywords

crystal structure, carbamoylmethyl- phosphine oxide (CMPO), rare earth element, metal–organic polymer

Disciplines

Chemistry

Abstract

In the title compound poly[aqua­bis­(-nitrato-⁴O,O':O,O'')tetra­kis­(nitrato-²O,O'){₄-tetra­ethyl [(ethane-1,2-diyl)bis(aza­nedi­yl)bis­(2-oxo­ethane-2,1-di­yl)]di­phospho­nate-²O,O'}disamarium(III)], [Sm₂(NO₃)₆(C₁₄H₃₀N₂O₈P₂)(H₂O)]_n, a 12-coordinate Sm^III and a nine-coordinate Sm^III cation are alternately linked via shared bis-bidentate nitrate anions into a corrugated chain extending parallel to the a axis. The nine-coordinate Sm^III atom of this chain is also chelated by a bidentate, yet flexible, carbamoyl­methyl­phoshine oxide (CMPO) ligand and bears one water mol­ecule. This water mol­ecule is hydrogen bonded to nitrate groups bonded to the 12-coordinate Sm^III cation. The CMPO ligand, which lies about an inversion center, links neighboring chains along the c axis, forming sheets parallel to the ac plane. Hydrogen bonds between the amide NH group and metal-bound nitrate anions are also present in these sheets. The sheets are packed along the b axis through only van der Waals inter­actions.

Original Citation

Stoscup, J. A., Staples, R. J., & Biros, S. M. (2014). Crystal structure of a samarium(III) nitrate chain cross-linked by a bis-carbamoyl­methyl­phosphine oxide ligand. Acta Crystallographica Section E: Structure Reports Online, 70(10), 188–191. https://doi.org/10.1107/S1600536814020078

ScholarWorks Citation

Stoscup, Julie A.; Staples, Richard J.; and Biros, Shannon M., "Crystal Structure of a Polysamarium (III) Nitrate Chain Crosslinked by a Di-CMPO Ligand" (2014). Peer Reviewed Articles. 31.
https://scholarworks.gvsu.edu/chm_articles/31