TY - JOUR
T1 - Synthesis of Novel Unsymmetric Strontium Complexes Containing Aminoalkoxides
AU - Park, Chanwoo
AU - Choi, Heenang
AU - Hwang, Jeong Min
AU - Lee, Ji Hun
AU - Park, Bo Keun
AU - Ryu, Ji Yeon
AU - Hong, Chang Seop
AU - Chung, Taek Mo
N1 - Funding Information:
. This work was supported by the Materials and Components Technology Development Program ( 20010275, Development of ALD precursors for high k thin film in logic and DRAM Flash memory devices) funded by the Ministry of Trade, Industry & Energy (MOTIE, Republic of Korea) and the Development of smart chemical materials for IoT devices Project through the Korea Research Institute of Chemical Technology (KRICT) of Republic of Korea (SS2121‐10)
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/8/20
Y1 - 2021/8/20
N2 - 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.
AB - 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.
KW - dimerization
KW - group 2 metal
KW - heteroleptic
KW - strontium
KW - unsymmetric
UR - http://www.scopus.com/inward/record.url?scp=85113438370&partnerID=8YFLogxK
U2 - 10.1002/slct.202102195
DO - 10.1002/slct.202102195
M3 - Article
AN - SCOPUS:85113438370
VL - 6
SP - 7823
EP - 7828
JO - ChemistrySelect
JF - ChemistrySelect
SN - 2365-6549
IS - 31
ER -