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Title
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Hydrogen-bonded networks based on manganese(II), nickel(II), copper(II) and zinc(II) complexes of N,N '-dimethylurea
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Author
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Transition metal chemistry. - Weinheim
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Publication
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Weinheim
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2003
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ISSN
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0340-4285
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DOI
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10.1023/A:1025082114947
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Volume/pages
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28
:5
(2003)
, p. 548-557
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ISI
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000184576500012
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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