Dicyanonitrosomethanide and carbamoylcyanonitrosomethanide: heterofunctionalised anionic ligands for the formation of 3d/4f bimetallic coordination polymers and complexes

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Abstract

The two-dimensional heterobimetallic coordination network [Na(H2O)3][Ce(dcnm)4(H2O)4] (dcnm = dicyanonitrosomethanide) was obtained from an aqueous reaction of Na(dcnm) and CeCl3A?7H2O. The structure contains I?:n2- n1 nitroso-bridged Ce-Na pairs. These heterometallic units are joined through non-chelating dcnm ligands, via nitrile-Na and O-Ce interactions, to produce (4,4) sheets. The transition metal promoted in situ nucleophilic addition of water to dcnm results in the formation of carbamoylcyanonitrosomethanide (ccnm) which is included in the trinuclear 3d/4f heterobimetallic complex [ Gd(OH)(ccnm)2(H2O)4 2MnIII](ClO4)3A?2(18-crown-6), which formed from an aqueous reaction of Gd(dcnm)3, Mn(ClO4)2A?6H2O and 18-crown-6. The ccnm ligands display a I?2-n2(Ocarbamoyl,Nnitroso)Gd:n1(Onitroso)Mn coordination mode, with the 18-crown-6 molecules residing in the lattice acting as hydrogen bond acceptors to aqua and ccnm ligands, resulting in the formation of (4,4) sheets.
Original languageEnglish
Title of host publicationTerrae Rarae 2009
EditorsGerd Meyer
Place of PublicationBornheim Germany
PublisherNaturwissenschaft und Technik Verlag
Pages1 - 8
Number of pages8
Volume18
DOIs
Publication statusPublished - 2010
EventInternational Conference on f-Elements (ICfE) - Cologne, Germany, Bornheim Germany
Duration: 1 Jan 2010 → …

Conference

ConferenceInternational Conference on f-Elements (ICfE)
CityBornheim Germany
Period1/01/10 → …

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