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C12H22O4Eu(NO3)3,Mr=568. 28,monoclinic, P21/n,a=7. 980(1) ,6= 17.226(2), c=14. 460(3) A,B=100.15(1) , V= 1956. 6A3,Z=4,Dc=1.929 g/cm3,F(000) = 1128. The structure was sieved by direct methods and Fourier synthesis, and refined by block-diagonal and full matrix least-squares method to a final R of 0. 055 for 2568 independent reflections of I>3a(I). The ten donor oxygen atoms in the crowm ether and NO3 groups are coordinated to central metal ion Eu(III) forming an irregular coordination polyhedron. The Eu(III) ion is out of the ether oxygen plane and the three nitrate groups are bidentately coordinated to the Eu (III) on the opposite side of the polyether. The average bond lengths of Eu-O(NO3) and Eu-O(ether) are 2. 491A and 2. 558A ,respectively.
(2), c = 14.460 (3) A, B = 100.15 (1) C12H22O4Eu (NO3) 3, Mr = 568.28, monoclinic, P21 / , V = 1956. 6A3, Z = 4, Dc = 1.929 g / cm3, F (000) = 1128. The structure was sieved by direct methods and Fourier synthesis, and refined by block- diagonal and full matrix least- squares method to a final R of 0. 055 for 2568 independent reflections of I> 3a (I). The ten donor oxygen atoms in the crowm ether and NO3 groups are coordinated to a central metal ion Eu (III) forming an irregular coordination polyhedron. The Eu ( III) ion is out of the ether oxygen plane and the three nitrate groups are bidentately coordinated to the Eu (III) on the opposite side of the polyether. The average bond lengths of Eu-O (NO3) and Eu-O (ether) are 2. 491A and 2. 558A, respectively.