Synthesis of Novel Unsymmetric Strontium Complexes Containing Aminoalkoxides

Chanwoo Park; Heenang Choi; Jeong Min Hwang; Ji Hun Lee; Bo Keun Park; Ji Yeon Ryu; Chang Seop Hong; Taek Mo Chung

doi:10.1002/slct.202102195

Synthesis of Novel Unsymmetric Strontium Complexes Containing Aminoalkoxides

Chanwoo Park, Heenang Choi, Jeong Min Hwang, Ji Hun Lee, Bo Keun Park, Ji Yeon Ryu, Chang Seop Hong, Taek Mo Chung

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	7823-7828
Number of pages	6
Journal	ChemistrySelect
Volume	6
Issue number	31
DOIs	https://doi.org/10.1002/slct.202102195
Publication status	Published - 2021 Aug 20

Bibliographical note

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

Keywords

dimerization
group 2 metal
heteroleptic
strontium
unsymmetric

ASJC Scopus subject areas

General Chemistry

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10.1002/slct.202102195

Cite this

@article{a5bfe696360a49c1a45247c5c8b952b3,

title = "Synthesis of Novel Unsymmetric Strontium Complexes Containing Aminoalkoxides",

abstract = "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.",

keywords = "dimerization, group 2 metal, heteroleptic, strontium, unsymmetric",

author = "Chanwoo Park and Heenang Choi and Hwang, {Jeong Min} and Lee, {Ji Hun} and Park, {Bo Keun} and Ryu, {Ji Yeon} and Hong, {Chang Seop} and Chung, {Taek Mo}",

note = "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: {\textcopyright} 2021 Wiley-VCH GmbH",

year = "2021",

month = aug,

day = "20",

doi = "10.1002/slct.202102195",

language = "English",

volume = "6",

pages = "7823--7828",

journal = "ChemistrySelect",

issn = "2365-6549",

publisher = "Wiley-Blackwell Publishing Ltd",

number = "31",

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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

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U2 - 10.1002/slct.202102195

DO - 10.1002/slct.202102195

M3 - Article

AN - SCOPUS:85113438370

SN - 2365-6549

VL - 6

SP - 7823

EP - 7828

JO - ChemistrySelect

JF - ChemistrySelect

IS - 31

ER -

Synthesis of Novel Unsymmetric Strontium Complexes Containing Aminoalkoxides

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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