Publication Date:
2014-09-13
Description:
In the title compound poly[aquabis(μ-nitrato-κ4O,O′:O,O′′)tetrakis(nitrato-κ2O,O′){μ4-tetraethyl [(ethane-1,2-diyl)bis(azanediyl)bis(2-oxoethane-2,1-diyl)]diphosphonate-κ2O,O′}disamarium(III)], [Sm2(NO3)6(C14H30N2O8P2)(H2O)]n, a 12-coordinate SmIIIand a nine-coordinate SmIIIcation are alternately linkedviashared bis-bidentate nitrate anions into a corrugated chain extending parallel to theaaxis. The nine-coordinate SmIIIatom 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 SmIIIcation. The CMPO ligand, which lies about an inversion center, links neighboring chains along thecaxis, forming sheets parallel to theacplane. Hydrogen bonds between the amide NH group and metal-bound nitrate anions are also present in these sheets. The sheets are packed along thebaxis through only van der Waals interactions.
Electronic ISSN:
1600-5368
Topics:
Chemistry and Pharmacology
,
Geosciences
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