Abstract
AbstractHeteroleptic 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.
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