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Metastable metal imidazolates: development of targeted syntheses by combining experimental and theoretical investigations of the formation mechanisms

  • Christian A. Schröder , Sanjib Saha , Klaus Huber , Stefano Leoni and Michael Wiebcke EMAIL logo


In this report, we summarize our experimental and theoretical investigations in the zinc(II) imidazolate, [Zn(im)2], and zinc(II) 4,5-dichloroimidazolate, [Zn(dcim)2], systems that have been published previously. This comprises a study on the thermodynamic stabilities of the two densest phases with coi and zni framework structures in the [Zn(im)2] system including the discovery and characterization of a new [Zn(im)2·0.5py]-neb phase (py = pyridine), a study on the mechanism of formation of the [Zn(im)2]-zni phase as well as a study on the discovery and characterization of a new [Zn(dcim)2]-SOD phase. In addition, we present as yet unpublished work. This concerns the discovery and characterization of a new [Zn(im)2·0.5mor]-neb phase (mor = morpholine) and investigations of the mechanisms of crystallization of [Zn(im)2·0.5py]-neb and [Zn(im)2·0.5mor]-neb as well as an evalutation of time-resolved SAXS/WAXS data recorded in-situ during the formation of [Zn(im)2]-zni.

Corresponding author: Michael Wiebcke, Institut für Anorganische Chemie, Leibniz Universität Hannover, Callinstrasse 9, 30167 Hannover, Germany, E-mail:


Provision of beamtime at beamline ID02 by ESRF and at beamline F3 by DESY is gratefully acknowledged. We thank Dr. D. Pontoni and Dr. T. Narayanan (ESRF) for fruitful scientific discussions and support at beamline ID02, and Prof. W. Bensch (Christian-Albrechts-Universität zu Kiel) for loan of his heating device used for the EDXRD experiments at beamline F3. We also thank Maria E. Schweinefuß, Sergej Springer and Dr. T. Hikov for their assistance during synchrotron experiments. Financial support by the Deutsche Forschungsgemeinschaft within the framework of the priority program 1415 (“Crystalline Non-Equilibrium Phases”) is gratefully acknowledged.


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Received: 2014-7-25
Accepted: 2014-9-24
Published Online: 2014-10-28
Published in Print: 2014-12-1

©2014 by De Gruyter

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