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

Dept. of Fine Chemistry

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

14 Scopus citations

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
State	Published - 2011

Keywords

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

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10.1016/j.ica.2010.11.029

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@article{d879db0c4233494896ebdc81355e8ece,

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",

year = "2011",

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

language = "English",

volume = "366",

pages = "337--343",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

number = "1",

}

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

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

UR - https://www.scopus.com/pages/publications/79251596466

U2 - 10.1016/j.ica.2010.11.029

DO - 10.1016/j.ica.2010.11.029

M3 - Article

AN - SCOPUS:79251596466

SN - 0020-1693

VL - 366

SP - 337

EP - 343

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

IS - 1

ER -

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

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Keywords

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