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The title complex crystallizes in the orthorhombic space group Pna21 with Mr = 570. 8, a = 16. 927(6), b = 18.942(7), c=10. 618(5)(?) and Z = 4. The structure was solved by Patterson and Fourier techniques and refined by block-diagonal least squares techniques to R = 0. 090 and Rw = 0. 093 for 1553 reflections with I>1. 5σ(I). The Pr3+ ion is bonded to five carbon atoms of cyclopentadi-enyl ring, four μ-chlorine atoms and one oxygen atom of THF in an octahedral geometry with the Pr-C distances in the range 2. 6.7 - 2. 79(?)(av. 2. 76(?)) , the Pr-Cl distances in the range 2. 81 - 2. 92(?) (av. 2. 86(?)) and the Pr -O distance of 2. 51 (?). Each Li+ ion is coordinated by two μ-chlorine atoms and two oxygen atoms from THF in a tetrahedral geometry with the Li-Cl distances in the range 2. 24 - 2. 61(?) (av. 2. 43(?)) and the Li -O distances in the range 1. 86-1. 94(?)(av. 1. 91(?)). The Pr atom and the two Li atoms are bridged asymmetrically by the chlorine atoms.
The title complex crystallizes in the orthorhombic space group Pna21 with Mr = 570. 8, a = 16. 927 (6), b = 18.942 (7), c = 10.618 (5) Structure was solved by Patterson and Fourier techniques and refined by block-diagonal least squares techniques to R = 0.090 and Rw = 0. 093 for 1553 reflections with I> 1.5σ (I). The Pr3 + ion is bonded to five carbon atoms of cyclopentadi-enyl ring, four μ-chlorine atoms and one oxygen atom of THF in an octahedral geometry with the Pr-C distances in the range of 2. 6.7 - 2.79 (?) (av. ), the Pr-Cl distances in the range 2.81-2.92 (?) (av.2.86 (?)) and the Pr-O distance of 2.51 (?). Each Li + ion is coordinated by Two μ-chlorine atoms and two oxygen atoms from THF in a tetrahedral geometry with the Li-Cl distances in the range 2. 24 - 2. 61 (?) (av. 2. 43 (?)) and the Li-O distances in the range 1. 86-1. 94 (?) (av. 1. 91 (?)). The Pr atom and the two Li atoms are bridged asymmetrically by the chlorine atoms.