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 SmIII and a nine-coordinate SmIII cation are alternately linked via shared bis-bidentate nitrate anions into a corrugated chain extending parallel to the a axis. The nine-coordinate SmIII 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 SmIII 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
