6533b85bfe1ef96bd12ba84b
RESEARCH PRODUCT
Novel Bimetallic-Dicyanamide Extended Two- and Three-Dimensional Networks through [Cu(rac-CTH)]2+ Cation Templation
Jerzy MrozińskiEnrique ColacioRaikko KivekäsJosé María MorenoIkram Ben MaimounJosé Suárez-varelaFrancesc Lloretsubject
Denticity010405 organic chemistryChemistryLigandStereochemistryStackingGeneral ChemistryCrystal structure010402 general chemistryCondensed Matter Physics01 natural sciences0104 chemical sciences3. Good healthchemistry.chemical_compoundCrystallographyCubaneAmideGeneral Materials ScienceDicyanamideBimetallic stripdescription
Reaction of [Cu(rac-CTH)]2+ with dicyanamide and Mn2+ or Fe2+ produces three bimetallic extended structures. Complexes 1 and 2, both obtained in the same reaction pot, consist of two different (4,4) two-dimensional (2D) layers, with the [Cu(rac-CTH)(dca)]+ cations noncoordinated and coordinated to the Mn(μ1,5-dca) network for 1 and 2, respectively (rac-CTH = racemic-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane). Complex 2 shows an unusual monodentate coordination mode through the central amide nitrogen of the dca ligand which is first reported for a polynuclear complex. The structure of 3 consists of a three-dimensional network which can be described as a stacking of layers made of heptanuclear defective cubane units, very similar to those found in 1. The magnetic properties of 3 are indicative of antiferromagnetic coupling with a magnetic phase change occurring at 19 K.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-07-31 | Crystal Growth & Design |