Heteroleptic Sr complexes, [Sr(dmamp)(btsa)]2⋅DME (1), [Sr(dmamb)(btsa)]2⋅DME (2), [Sr(dmamp)(hfac)]3⋅DME (3), [Sr(dmamb)(hfac)]3⋅DME (4), [Sr(dmamp)(tmhd)]n (5), and Sr[(dmamb)(tmhd)]n (6) (dmampH=1-(dimethylamino)-2-methylpropan-2-ol, dmambH=1-(dimethylamino)-2-methylbutan-2-ol, DME=dimethoxyethane, hfacH=1,1,1,5,5,5-hexafluoropentadione, tmhdH=2,2,6,6-tetramethylheptane-3,5-dione, btsa=bis(trimethylsilyl)amide) were successfully prepared by two-step substitution reactions using aminoalkoxy and β-diketonate ligands. All complexes were characterized using various methods, including Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, elemental analysis, and thermogravimetric analysis. Single-crystal X-ray diffraction of crystals of 1 and 2 revealed dimeric structures with Sr metal centres connected by μ2-O bonding of an alkoxy O atom, whereas 3 was a trimer consisting of two μ3-O bridges and three μ2-O bridges by the dmamp and hfac ligands, respectively.
- group 2 metal
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