A Bis(μ-phenoxo)-Bridged Dizinc Complex with Hydrolytic Activity
(2013) In Zeitschrift für Anorganische und Allgemeine Chemie 639(8-9). p.1534-1542- Abstract
- The dinuclear complex [Zn2(papy)2]·2CH3OH [H2papy = N-
(2-hydroxybenzyl)-N-(2-picolyl)glycine] was synthesized and characterized.
The crystal structure of the complex reveals that both ZnII ions
are pentacoordinate with distorted pentagonal bipyramidal coordination
arrangements. The phenoxyl groups of each ligand bridge the two
metal atoms, whereas each carboxylate of the ligand is terminally
bound to one ZnII ion. Potentiometric studies of the ZnII:H2papy system
in a methanol/water mixture show the existence of a mononuclear species at lower pH; but at a pH above 5, a dimeric species starts to
dominate and transforms further into a bis(μ-phenoxo) bridged... (More) - The dinuclear complex [Zn2(papy)2]·2CH3OH [H2papy = N-
(2-hydroxybenzyl)-N-(2-picolyl)glycine] was synthesized and characterized.
The crystal structure of the complex reveals that both ZnII ions
are pentacoordinate with distorted pentagonal bipyramidal coordination
arrangements. The phenoxyl groups of each ligand bridge the two
metal atoms, whereas each carboxylate of the ligand is terminally
bound to one ZnII ion. Potentiometric studies of the ZnII:H2papy system
in a methanol/water mixture show the existence of a mononuclear species at lower pH; but at a pH above 5, a dimeric species starts to
dominate and transforms further into a bis(μ-phenoxo) bridged dizinc
complex by deprotonation of phenolic hydrogen. A kinetic study of
the hydrolysis of bis(2,4-dinitrophenyl)phosphate at different pH, catalyzed
by complex 1, indicates a maximum rate at pH 9, where the
bis(μ-phenoxo)-bridged dizinc species corresponding to 1 dominates
in solution. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4316647
- author
- Mitra, Mainak LU ; Singh, Reena LU ; Pyrkosz-Bulska, Monika ; Haukka, Matti ; Gumiena-Kontecka, Elzbieta and Nordlander, Ebbe LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Zeitschrift für Anorganische und Allgemeine Chemie
- volume
- 639
- issue
- 8-9
- pages
- 1534 - 1542
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000330180900031
- scopus:84880517197
- ISSN
- 0044-2313
- DOI
- 10.1002/zaac.201300160
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
- id
- a8980a87-2337-435f-8696-66e97953120c (old id 4316647)
- date added to LUP
- 2016-04-01 14:28:18
- date last changed
- 2022-02-27 02:50:20
@article{a8980a87-2337-435f-8696-66e97953120c, abstract = {{The dinuclear complex [Zn2(papy)2]·2CH3OH [H2papy = N-<br/><br> (2-hydroxybenzyl)-N-(2-picolyl)glycine] was synthesized and characterized.<br/><br> The crystal structure of the complex reveals that both ZnII ions<br/><br> are pentacoordinate with distorted pentagonal bipyramidal coordination<br/><br> arrangements. The phenoxyl groups of each ligand bridge the two<br/><br> metal atoms, whereas each carboxylate of the ligand is terminally<br/><br> bound to one ZnII ion. Potentiometric studies of the ZnII:H2papy system<br/><br> in a methanol/water mixture show the existence of a mononuclear species at lower pH; but at a pH above 5, a dimeric species starts to<br/><br> dominate and transforms further into a bis(μ-phenoxo) bridged dizinc<br/><br> complex by deprotonation of phenolic hydrogen. A kinetic study of<br/><br> the hydrolysis of bis(2,4-dinitrophenyl)phosphate at different pH, catalyzed<br/><br> by complex 1, indicates a maximum rate at pH 9, where the<br/><br> bis(μ-phenoxo)-bridged dizinc species corresponding to 1 dominates<br/><br> in solution.}}, author = {{Mitra, Mainak and Singh, Reena and Pyrkosz-Bulska, Monika and Haukka, Matti and Gumiena-Kontecka, Elzbieta and Nordlander, Ebbe}}, issn = {{0044-2313}}, language = {{eng}}, number = {{8-9}}, pages = {{1534--1542}}, publisher = {{Wiley-Blackwell}}, series = {{Zeitschrift für Anorganische und Allgemeine Chemie}}, title = {{A Bis(μ-phenoxo)-Bridged Dizinc Complex with Hydrolytic Activity}}, url = {{http://dx.doi.org/10.1002/zaac.201300160}}, doi = {{10.1002/zaac.201300160}}, volume = {{639}}, year = {{2013}}, }