Single crystal X-ray diffraction analyses were performed on single crystals of 1 (240 K), 2 (296 K) and 3 (120 K). Crystallographic data and structural parameters are given in Table . Selected bond distances and angles are enlisted in Table The asymmetric unit of complex 3 consists of two crystallographically independent [Dy(acac)3(bik-Et)] units and four methanol as interstitial solvent molecules (Figures and).