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The crystal and molecular structure of [Li+(DME)3]2[(CpNd)4 (μ2-CH3)2(μ4-O) (μ2-Cl)6]2~was determined from single crystal X-ray diffraction. The complex crystallizes in the monoclinic space group P21/n with lattice parameters a= 14. 614(5), b= 18. 683 (5),c= 24. 595 (6) A, β = ,91-85(2)°, V = 6712(3) A3,2 = 4,DC = 1. 63g/cm3,F(000) = 3256,Mr=1650. 85. The structure was solved by direct methods and Fourier techniques and refined by least-squares to a final R=0. 047,RW = 0. 049 for 3761 with I>3σ(I). The result revealed that the anion [(CpNd)4(μ4-O) (μ2-Cl)6(μ2-CH3)2]2- is composed of four neodymium (Ⅲ) atoms bridged by six Cl atoms, two methyl groups and one oxygen atom, and every Nd is bonded to a cyclopentadienyl group. The four Nd atoms form a distorted tetrahedron. The cations are composed of two Li+(DME)3 with average Li-O distance of 2. 120(40) A.
The crystal and molecular structure of [Li + (DME) 3] 2 [(CpNd) 4 (μ2-CH3) 2 (μ4-O) complex crystallizes in the monoclinic space group p21 / n with lattice parameters a = 14. 614 (5), b = 18. 683 (5), c = 24. 595 (6) A, °, V = 6712 (3) A3,2 = 4, DC = 1.63g / cm3, F (000) = 3256, Mr = 1650. 85. The structure was solved by direct methods and Fourier techniques and refined by least- squares to a final R = 0. 047, RW = 0. 049 for 3761 with I> 3σ (I). The result revealed that the anion [(CpNd) 4 (μ4-0) CH3) 2] 2-is composed of four neodymium (III) atoms bridged by six Cl atoms, two methyl groups and one oxygen atom, and each Nd is bonded to a cyclopentadienyl group. The four Nd atoms form a distorted tetrahedron. The cations are composed of two Li + (DME) 3 with an average Li-O distance of 2. 120 (40) A.