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The solvated centrosymmmtric title compound, [Li 2 (C 24 H 34 O 4 P) 2 (C 10 H 8 N 2 ) 2 ]·2C 7 H 8 , was formed in the reaction between {Li[(2,6- i Pr 2 C 6 H 3 -O) 2 POO](MeOH) 3 }(MeOH) and 2,2'-bi-pyridine (bipy) in toluene. The structure has monoclinic ( P 2 1 / n ) symmetry at 120 K and the asymmetric unit consists of half a complex mol-ecule and one mol-ecule of toluene solvent. The diaryl phosphate ligand demonstrates a μ-κ O :κ O '-bridging coordination mode and the 2,2'-bi-pyridine ligand is chelating to the Li + cation, generating a distorted tetra-hedral LiN 2 O 2 coordination polyhedron. The complex exhibits a unique dimeric Li 2 O 4 P 2 core. One isopropyl group is disordered over two orientations in a 0.621 (4):0.379 (4) ratio. In the crystal, weak C-H⋯O and C-H⋯π inter-actions help to consolidate the packing. Catalytic systems based on the title complex and on the closely related complex {Li[(2,6- i Pr 2 C 6 H 3 -O) 2 POO](MeOH) 3 }(MeOH) display activity in the ring-opening polymerization of ∊-caprolactone and l-dilactide.

acta crystallographica. section e, crystallographic communications

Bis[μ-bis(2,6-diisopropylphenyl) phosphato-κ2 O:O′]bis[(2,2′-bipyridine-κ2 N,N′)lithium] toluene disolvate and its catalytic activity in ring-opening polymerization of ∊-caprolactone and <scp>L</scp>-dilactide

Bis[μ-bis(2,6-diisopropylphenyl) phosphato-κ2 O:O′]bis[(2,2′-bipyridine-κ2 N,N′)lithium] toluene disolvate and its catalytic activity in ring-opening polymerization of ∊-caprolactone and L-dilactide

Bis[μ-bis(2,6-diisopropylphenyl) phosphato-κ² O:O′]bis[(2,2′-bipyridine-κ² N,N′)lithium] toluene disolvate and its catalytic activity in ring-opening polymerization of ∊-caprolactone and L-dilactide