Palladium(II) complexes containing N,N′-bidentate N-(pyridin-2-ylmethyl)aniline and its derivatives: Synthesis, structural characterisation, and methyl methacrylate polymerisation

Sunghoon Kim; Dongil Kim; Ha Jin Lee; Hyosun Lee

doi:10.1016/j.poly.2014.04.015

Palladium(II) complexes containing N,N′-bidentate N-(pyridin-2-ylmethyl)aniline and its derivatives: Synthesis, structural characterisation, and methyl methacrylate polymerisation

Sunghoon Kim, Dongil Kim, Ha Jin Lee, Hyosun Lee

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

6 Scopus citations

Abstract

The reaction of [Pd(CH₃CN)₂Cl₂] with N-(pyridin-2-ylmethyl)aniline (L₁) and its derivatives (L ₂-L₆) in ethanol yields [(NN′)PdCl₂] complexes, namely [L_nPdCl₂] (L_n = L ₁-L₆). The X-ray crystal structure of Pd(II) complexes revealed that the palladium atom in [L_nPdCl₂] (L _n = L₁-L₆) showed a square plane geometry involving two nitrogen atoms of NN′-bidentate and two chlorido ligands. Complex [L₄PdCl₂] containing 2,4,6-trimethyl-N-(pyridin-2- ylmethyl)aniline (L₄) showed the highest catalytic activity for the polymerisation of methyl methacrylate (MMA) in the presence of modified methylaluminoxane (MMAO) with an activity of 1.41 × 10⁵ g PMMA/mol Pd·h at 60 °C and poly(methyl methacrylate) (PMMA) syndiotacticity (characterised using ¹H NMR spectroscopy) of ca. 0.70.

Original language	English
Pages (from-to)	66-74
Number of pages	9
Journal	Polyhedron
Volume	77
DOIs	https://doi.org/10.1016/j.poly.2014.04.015
State	Published - 27 Jul 2014

Keywords

MMA polymerization
N,N′-bidentate ligand
N-(pyridin-2-ylmethyl)aniline
Palladium(II) complex
Syndiotacticity

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10.1016/j.poly.2014.04.015

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title = "Palladium(II) complexes containing N,N′-bidentate N-(pyridin-2-ylmethyl)aniline and its derivatives: Synthesis, structural characterisation, and methyl methacrylate polymerisation",

abstract = "The reaction of [Pd(CH3CN)2Cl2] with N-(pyridin-2-ylmethyl)aniline (L1) and its derivatives (L 2-L6) in ethanol yields [(NN′)PdCl2] complexes, namely [LnPdCl2] (Ln = L 1-L6). The X-ray crystal structure of Pd(II) complexes revealed that the palladium atom in [LnPdCl2] (L n = L1-L6) showed a square plane geometry involving two nitrogen atoms of NN′-bidentate and two chlorido ligands. Complex [L4PdCl2] containing 2,4,6-trimethyl-N-(pyridin-2- ylmethyl)aniline (L4) showed the highest catalytic activity for the polymerisation of methyl methacrylate (MMA) in the presence of modified methylaluminoxane (MMAO) with an activity of 1.41 × 105 g PMMA/mol Pd·h at 60 °C and poly(methyl methacrylate) (PMMA) syndiotacticity (characterised using 1H NMR spectroscopy) of ca. 0.70.",

keywords = "MMA polymerization, N,N′-bidentate ligand, N-(pyridin-2-ylmethyl)aniline, Palladium(II) complex, Syndiotacticity",

author = "Sunghoon Kim and Dongil Kim and Lee, {Ha Jin} and Hyosun Lee",

year = "2014",

month = jul,

day = "27",

doi = "10.1016/j.poly.2014.04.015",

language = "English",

volume = "77",

pages = "66--74",

journal = "Polyhedron",

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TY - JOUR

T1 - Palladium(II) complexes containing N,N′-bidentate N-(pyridin-2-ylmethyl)aniline and its derivatives

T2 - Synthesis, structural characterisation, and methyl methacrylate polymerisation

AU - Kim, Sunghoon

AU - Kim, Dongil

AU - Lee, Ha Jin

AU - Lee, Hyosun

PY - 2014/7/27

Y1 - 2014/7/27

N2 - The reaction of [Pd(CH3CN)2Cl2] with N-(pyridin-2-ylmethyl)aniline (L1) and its derivatives (L 2-L6) in ethanol yields [(NN′)PdCl2] complexes, namely [LnPdCl2] (Ln = L 1-L6). The X-ray crystal structure of Pd(II) complexes revealed that the palladium atom in [LnPdCl2] (L n = L1-L6) showed a square plane geometry involving two nitrogen atoms of NN′-bidentate and two chlorido ligands. Complex [L4PdCl2] containing 2,4,6-trimethyl-N-(pyridin-2- ylmethyl)aniline (L4) showed the highest catalytic activity for the polymerisation of methyl methacrylate (MMA) in the presence of modified methylaluminoxane (MMAO) with an activity of 1.41 × 105 g PMMA/mol Pd·h at 60 °C and poly(methyl methacrylate) (PMMA) syndiotacticity (characterised using 1H NMR spectroscopy) of ca. 0.70.

AB - The reaction of [Pd(CH3CN)2Cl2] with N-(pyridin-2-ylmethyl)aniline (L1) and its derivatives (L 2-L6) in ethanol yields [(NN′)PdCl2] complexes, namely [LnPdCl2] (Ln = L 1-L6). The X-ray crystal structure of Pd(II) complexes revealed that the palladium atom in [LnPdCl2] (L n = L1-L6) showed a square plane geometry involving two nitrogen atoms of NN′-bidentate and two chlorido ligands. Complex [L4PdCl2] containing 2,4,6-trimethyl-N-(pyridin-2- ylmethyl)aniline (L4) showed the highest catalytic activity for the polymerisation of methyl methacrylate (MMA) in the presence of modified methylaluminoxane (MMAO) with an activity of 1.41 × 105 g PMMA/mol Pd·h at 60 °C and poly(methyl methacrylate) (PMMA) syndiotacticity (characterised using 1H NMR spectroscopy) of ca. 0.70.

KW - MMA polymerization

KW - N,N′-bidentate ligand

KW - N-(pyridin-2-ylmethyl)aniline

KW - Palladium(II) complex

KW - Syndiotacticity

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U2 - 10.1016/j.poly.2014.04.015

DO - 10.1016/j.poly.2014.04.015

M3 - Article

AN - SCOPUS:84899788792

SN - 0277-5387

VL - 77

SP - 66

EP - 74

JO - Polyhedron

JF - Polyhedron

ER -

Palladium(II) complexes containing N,N′-bidentate N-(pyridin-2-ylmethyl)aniline and its derivatives: Synthesis, structural characterisation, and methyl methacrylate polymerisation

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