Zinc complexes with guanidine-pyridine hybrid ligands: anion effect and catalytic activity

Artjom Döring; Ulrich Flörke; Alexander Hoffmann; Matthew D. Jones; Dirk Kuckling; Janna Michaelis de Vasconcellos; Sonja Herres-Pawlis

doi:10.1002/zaac.201500538

Zinc complexes with guanidine-pyridine hybrid ligands: anion effect and catalytic activity

Artjom Döring
, Ulrich Flörke
, Alexander Hoffmann
, Matthew D. Jones
, Dirk Kuckling
, Janna Michaelis de Vasconcellos
, Sonja Herres-Pawlis

University of Paderborn
RWTH Aachen University

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

10 Citations (SciVal)

397 Downloads (Pure)

Abstract

The guanidine-pyridine ligands DMEGqu, TMGqu, and DMEGpy were reacted with zinc benzoate, zinc acetylacetonate, zinc bromide, zinc tetrafluoroborate, and zinc d,l-lactate in order obtain the corresponding complexes. The compounds were structurally characterized by X-ray crystallography and further characterized by NMR, IR, and MS measurements. All complexes were tested as initiators in the melt polymerization of d,l-lactide and the influence of the anion effect was studied. The bis(chelate) tetrafluoroborate complex 7 exhibited the highest activity.

Original language	English
Pages (from-to)	2147-2156
Journal	Zeitschrift für Anorganische und Allgemeine Chemie
Volume	641
Issue number	12-13
Early online date	27 Aug 2015
DOIs	https://doi.org/10.1002/zaac.201500538
Publication status	Published - Oct 2015

Keywords

Biodegradable polymers
Guanidine
Polylactide (PLA)
Ring-opening polymerization
Zinc

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title = "Zinc complexes with guanidine-pyridine hybrid ligands: anion effect and catalytic activity",

abstract = "The guanidine-pyridine ligands DMEGqu, TMGqu, and DMEGpy were reacted with zinc benzoate, zinc acetylacetonate, zinc bromide, zinc tetrafluoroborate, and zinc d,l-lactate in order obtain the corresponding complexes. The compounds were structurally characterized by X-ray crystallography and further characterized by NMR, IR, and MS measurements. All complexes were tested as initiators in the melt polymerization of d,l-lactide and the influence of the anion effect was studied. The bis(chelate) tetrafluoroborate complex 7 exhibited the highest activity.",

keywords = "Biodegradable polymers, Guanidine, Polylactide (PLA), Ring-opening polymerization, Zinc",

author = "Artjom D{\"o}ring and Ulrich Fl{\"o}rke and Alexander Hoffmann and Jones, \{Matthew D.\} and Dirk Kuckling and \{Michaelis de Vasconcellos\}, Janna and Sonja Herres-Pawlis",

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T1 - Zinc complexes with guanidine-pyridine hybrid ligands

T2 - anion effect and catalytic activity

AU - Döring, Artjom

AU - Flörke, Ulrich

AU - Hoffmann, Alexander

AU - Jones, Matthew D.

AU - Kuckling, Dirk

AU - Michaelis de Vasconcellos, Janna

AU - Herres-Pawlis, Sonja

PY - 2015/10

Y1 - 2015/10

N2 - The guanidine-pyridine ligands DMEGqu, TMGqu, and DMEGpy were reacted with zinc benzoate, zinc acetylacetonate, zinc bromide, zinc tetrafluoroborate, and zinc d,l-lactate in order obtain the corresponding complexes. The compounds were structurally characterized by X-ray crystallography and further characterized by NMR, IR, and MS measurements. All complexes were tested as initiators in the melt polymerization of d,l-lactide and the influence of the anion effect was studied. The bis(chelate) tetrafluoroborate complex 7 exhibited the highest activity.

AB - The guanidine-pyridine ligands DMEGqu, TMGqu, and DMEGpy were reacted with zinc benzoate, zinc acetylacetonate, zinc bromide, zinc tetrafluoroborate, and zinc d,l-lactate in order obtain the corresponding complexes. The compounds were structurally characterized by X-ray crystallography and further characterized by NMR, IR, and MS measurements. All complexes were tested as initiators in the melt polymerization of d,l-lactide and the influence of the anion effect was studied. The bis(chelate) tetrafluoroborate complex 7 exhibited the highest activity.

KW - Biodegradable polymers

KW - Guanidine

KW - Polylactide (PLA)

KW - Ring-opening polymerization

KW - Zinc

UR - https://www.scopus.com/pages/publications/84943579924

UR - http://dx.doi.org/10.1002/zaac.201500538

U2 - 10.1002/zaac.201500538

DO - 10.1002/zaac.201500538

M3 - Article

SN - 0044-2313

VL - 641

SP - 2147

EP - 2156

JO - Zeitschrift für Anorganische und Allgemeine Chemie

JF - Zeitschrift für Anorganische und Allgemeine Chemie

IS - 12-13

ER -

Zinc complexes with guanidine-pyridine hybrid ligands: anion effect and catalytic activity

Abstract

Keywords

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