The formation and molecular structure of [Na(THF)6][(η5-C9H7)3Pr(μ-Cl)Pr(η5-C9H7)3]

Abstract The reaction of 1: 0.8 mole ratio of anhydrous PrCl 3 with sodium indenyl in tetrahydrofuran (THF) results in the formation of [Na(THF) 6 ][(η 5 -C 9 H 7 ) 3 Pr(μ-Cl)Pr(η 5 -C 9 H 7 ) 3 ] with a good yield. X-ray analysis demonstrates that the complex consists of a disconnected ion pair formed by [(η 5 -C 9 H 7 ) 3 Pr(μ-Cl)Pr(η 5 -C 9 H 7 ) 3 ] anion and the sodium cation surrounded by six THF molecules. The complex crystallizes in triclinic system, of space group P 1 with unit-cell constants a = 10.693(2), b = 12.687(2), c = 12.825(2) A , α = 92.48(2), β = 82.17(2), γ = 91.73(1)°, D c = 1.41 g cm −13 V = 1721.7(5) A 3 for Z = 1 . The structure was solved by direct methods and full-matrix least-squares refinement to the final R = 0.062, R W = 0.072.