Title
Hydrogen-bonded networks based on manganese(II), nickel(II), copper(II) and zinc(II) complexes of N,N '-dimethylurea Hydrogen-bonded networks based on manganese(II), nickel(II), copper(II) and zinc(II) complexes of N,N '-dimethylurea
Author
Faculty/Department
Faculty of Applied Economics
Faculty of Sciences. Chemistry
Publication type
article
Publication
Weinheim ,
Subject
Chemistry
Source (journal)
Transition metal chemistry. - Weinheim
Volume/pages
28(2003) :5 , p. 548-557
ISSN
0340-4285
ISI
000184576500012
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A project related to the crystal engineering of hydrogen-bonded coordination complexes has been initiatied and some of our first results are presented here. The compounds [Mn(DMU)(6)](ClO4)(2) (1), [Ni(DMU)(6)](ClO4)(2) (2), [Cu(OClO3)(2)(DMU)(4)] (3) and [Zn(DMU)(6)](ClO4)(2) (4) have all been prepared from the reaction of N, N'-dimethylurea (DMU) and the appropriate hydrated metal perchlorate salt. Crystal structure determinations of the four compounds demonstrate the existence of [M(DMU)(6)](2+) cations and ClO4- counterions in (1), (2) and (4), whereas in (3) monodentate coordination of the perchlorate groups leads to molecules. The [ M( DMU)(6)](2+) cations and ClO4- anions self-assemble to form a hydrogen-bonded one-dimensional (1D) architecture in (1) and different 2D hydrogen-bonded networks in (2) and (4). The hydrogen bonding functionalities on the molecules of (3) create a 2D structure. The complexes were also characterised by room-temperature effective magnetic moments and i.r. studies. The data are discussed in terms of the nature of bonding and the known structures.
E-info
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