ISSN:
1573-1111
Keywords:
12-crown-4
;
yttrium
;
complex
;
X-ray crystal structure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Y(NO3)3(12-crown-4) was prepared via reaction of the crown ether and Y(NO3)3·nH2O in acetonitrile. Y(NO3)3(12-crown-4) crystallizes in the monoclinic space groupP21/c witha=12.084(5),b=8.524(4),c=15.150(6) Å, β=91.62(3)0 andD calc=1.92 g cm−3 forZ=4. The structure was refined by least-squares to a final conventionalR value of 0.105 using 1249 independent observed reflections [I≥3σ(I)]. The title compound is isostructural with its Eu(III) analog. The yttrium ion is ten-coordinate, bonded to three bidentate nitrate groups and to the four oxygens of the crown ether. The coordination polyhedron is best described as a 4A, 6B-extended dodecahedron. The Y-O(nitrate) and Y-O(ether) separations average 2.44(5) and 2.46(4) Å, respectively.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00656162
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