Anion effects on construction of ZnII compounds with a chelating ligand bis(2-pyridylmethyl)amine and their catalytic activities

Youngmee Kim; Byeong Kwon Park; Geun Hee Eom; Soo Hyun Kim; Hyun Min Park; Young S. Choi; Ho G. Jang; Cheal Kim

doi:10.1016/j.ica.2010.11.029

Anion effects on construction of Zn^II compounds with a chelating ligand bis(2-pyridylmethyl)amine and their catalytic activities

Youngmee Kim, Byeong Kwon Park, Geun Hee Eom, Soo Hyun Kim, Hyun Min Park, Young S. Choi, Ho G. Jang, Cheal Kim

College of Science

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

12 Citations (Scopus)

Abstract

Three Zn^II complexes containing bispicam ligands (bispicam = bis(2-pyridylmethyl)amine), [Zn(bispicam)₂](NO₃) ₂·2CH₃OH 4A, [Zn(bispicam)(NO₃) ₂] 4B, and [Zn(bispicam)₂](OTf)₂ 6, were obtained, and their structures were determined by X-ray crystallography. Complexes of the general formulation [Zn(bispicam)₂]X₂ (X = Cl^- (1), Br^- (2), I^- (3), NO₃ ^- (4A), ClO₄^- (5), and OTf^- (6)) show fac geometric isomers (a) or enantiomers (c) and (d) according to anions. Moreover, complexes 4-6 could carry out the catalytic transesterification of a range of esters with methanol under the mild conditions. Importantly, the catalyst 4B with an unsaturated structure has shown better efficiency than the catalysts, 4A, 5, and 6, having saturated structures. To explain this reactivity difference, two different reaction mechanisms have been proposed (metal-based vs. amide N-H-based).

Original language	English
Pages (from-to)	337-343
Number of pages	7
Journal	Inorganica Chimica Acta
Volume	366
Issue number	1
DOIs	https://doi.org/10.1016/j.ica.2010.11.029
Publication status	Published - 2011

Bibliographical note

Funding Information:
Financial support from South Korea Ministry Environment “ET-Human Resource Development Project”, the Korean Science & Engineering Foundation ( R01-2008-000-20704-0 and 2009-0074066 ), the Converging Research Center Program through the National Research Foundation of South Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2009-0082832 ), and South Korea University Grant is gratefully acknowledged.

Keywords

Bis(2-pyridylmethyl)amine
Catalyst
Geometric isomers
Transesterification
Zinc(II) complexes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/j.ica.2010.11.029

Cite this

@article{3b1d6fe1d2454d2d9608d20a7eb1f5a6,

title = "Anion effects on construction of ZnII compounds with a chelating ligand bis(2-pyridylmethyl)amine and their catalytic activities",

abstract = "Three ZnII complexes containing bispicam ligands (bispicam = bis(2-pyridylmethyl)amine), [Zn(bispicam)2](NO3) 2·2CH3OH 4A, [Zn(bispicam)(NO3) 2] 4B, and [Zn(bispicam)2](OTf)2 6, were obtained, and their structures were determined by X-ray crystallography. Complexes of the general formulation [Zn(bispicam)2]X2 (X = Cl- (1), Br- (2), I- (3), NO3 - (4A), ClO4- (5), and OTf- (6)) show fac geometric isomers (a) or enantiomers (c) and (d) according to anions. Moreover, complexes 4-6 could carry out the catalytic transesterification of a range of esters with methanol under the mild conditions. Importantly, the catalyst 4B with an unsaturated structure has shown better efficiency than the catalysts, 4A, 5, and 6, having saturated structures. To explain this reactivity difference, two different reaction mechanisms have been proposed (metal-based vs. amide N-H-based).",

keywords = "Bis(2-pyridylmethyl)amine, Catalyst, Geometric isomers, Transesterification, Zinc(II) complexes",

author = "Youngmee Kim and Park, {Byeong Kwon} and Eom, {Geun Hee} and Kim, {Soo Hyun} and Park, {Hyun Min} and Choi, {Young S.} and Jang, {Ho G.} and Cheal Kim",

note = "Funding Information: Financial support from South Korea Ministry Environment “ET-Human Resource Development Project”, the Korean Science & Engineering Foundation ( R01-2008-000-20704-0 and 2009-0074066 ), the Converging Research Center Program through the National Research Foundation of South Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2009-0082832 ), and South Korea University Grant is gratefully acknowledged. ",

year = "2011",

doi = "10.1016/j.ica.2010.11.029",

language = "English",

volume = "366",

pages = "337--343",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Anion effects on construction of ZnII compounds with a chelating ligand bis(2-pyridylmethyl)amine and their catalytic activities

AU - Kim, Youngmee

AU - Park, Byeong Kwon

AU - Eom, Geun Hee

AU - Kim, Soo Hyun

AU - Park, Hyun Min

AU - Choi, Young S.

AU - Jang, Ho G.

AU - Kim, Cheal

N1 - Funding Information: Financial support from South Korea Ministry Environment “ET-Human Resource Development Project”, the Korean Science & Engineering Foundation ( R01-2008-000-20704-0 and 2009-0074066 ), the Converging Research Center Program through the National Research Foundation of South Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2009-0082832 ), and South Korea University Grant is gratefully acknowledged.

PY - 2011

Y1 - 2011

N2 - Three ZnII complexes containing bispicam ligands (bispicam = bis(2-pyridylmethyl)amine), [Zn(bispicam)2](NO3) 2·2CH3OH 4A, [Zn(bispicam)(NO3) 2] 4B, and [Zn(bispicam)2](OTf)2 6, were obtained, and their structures were determined by X-ray crystallography. Complexes of the general formulation [Zn(bispicam)2]X2 (X = Cl- (1), Br- (2), I- (3), NO3 - (4A), ClO4- (5), and OTf- (6)) show fac geometric isomers (a) or enantiomers (c) and (d) according to anions. Moreover, complexes 4-6 could carry out the catalytic transesterification of a range of esters with methanol under the mild conditions. Importantly, the catalyst 4B with an unsaturated structure has shown better efficiency than the catalysts, 4A, 5, and 6, having saturated structures. To explain this reactivity difference, two different reaction mechanisms have been proposed (metal-based vs. amide N-H-based).

AB - Three ZnII complexes containing bispicam ligands (bispicam = bis(2-pyridylmethyl)amine), [Zn(bispicam)2](NO3) 2·2CH3OH 4A, [Zn(bispicam)(NO3) 2] 4B, and [Zn(bispicam)2](OTf)2 6, were obtained, and their structures were determined by X-ray crystallography. Complexes of the general formulation [Zn(bispicam)2]X2 (X = Cl- (1), Br- (2), I- (3), NO3 - (4A), ClO4- (5), and OTf- (6)) show fac geometric isomers (a) or enantiomers (c) and (d) according to anions. Moreover, complexes 4-6 could carry out the catalytic transesterification of a range of esters with methanol under the mild conditions. Importantly, the catalyst 4B with an unsaturated structure has shown better efficiency than the catalysts, 4A, 5, and 6, having saturated structures. To explain this reactivity difference, two different reaction mechanisms have been proposed (metal-based vs. amide N-H-based).

KW - Bis(2-pyridylmethyl)amine

KW - Catalyst

KW - Geometric isomers

KW - Transesterification

KW - Zinc(II) complexes

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