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Crystal of EuCl3(C4H8O4). was obtained from the reaction of C9H7Naand EuCl3,(0. 8: 1 mole ratio) in THF. It was crystallized in Fdd2 space group withunit cell parameters a=29. 161 (4), b=16. 558(6), c=9. 479 (3) A, V=4577 (4)A3, Z=8, Dc= 1.59 g/cm3, Mr=546. 75. F(000)=2192, A(Mo Ka) =0. 71069, u=31. 12 cm-1, T=293K. The final R and Rw values are 0. 040 and 0. 051 respective-ly. Three chlorine atoms and four oxygen atoms from THF are coordinated with cen-tral europium ion to form a pentagonal bipyramid polyhedron with coordination number7, the average Eu-Cl; bond length is 2. 637 A and Eu-O 2. 460A.
It was crystallized in Fdd2 space group with cell cell parameters a = 29.161 (4), b = 16 (4). The crystal structure of EuCl3 (C4H8O4) was obtained from the reaction of C9H7Naand EuCl3 (0.8: 1 mole ratio) . 558 (6), c = 9. 479 (3) A, V = 4577 (4) A3, Z = 8, Dc = 1.59 g / cm3, Mr = 546. Mo Ka) = 0. 71069, u = 31. 12 cm-1, T = 293K. The final R and Rw values are 0. 040 and 0. 051 respective-ly. Three chlorine atoms and four oxygen atoms from THF are coordinated with cen-tral europium ion to form a pentagonal bipyramid polyhedron with coordination number 7, the average Eu-Cl; bond length is 2. 637 A and Eu-O 2. 460A.