0000000001311720
AUTHOR
Boujemaa Moubaraki
Hybrid materials containing organometallic cations and 3-D anionic metal dicyanamide networks of type [Cp*2M][M′(dca)3]
A new series of hybrid materials of type [Cp*2M][M′(dca)3] has been prepared by cation templation and structurally characterised (M = Fe(III), Co(III); M′ = Mn(II), Fe(II), Co(II), Ni(II), Cd(II); dca− = N(CN)2−). The crystallographic analysis of [Cp*2Fe][Cd(dca)3] showed that the [Cd(dca)3]− anionic framework is of a symmetrical 3-D α-polonium type, containing octahedral Cd nodes and μ1,5-dca bridging ligands. The [Cp*2Fe]+ cations occupy the cube-like cavities within the framework. The cationic and anionic-framework sublattices remain magnetically independent and display susceptibilities, over the range 300 to 2 K, of a Curie–Weiss nature obtained by adding a S = 1/2 (Cp*2Fe+) or a S = 0 …
An investigation of photo- and pressure-induced effects in a pair of isostructural two-dimensional spin-crossover framework materials
International audience; Two new isostructural iron(II) spin-crossover (SCO) framework (SCOF) materials of the type [Fe(dpms)2 (NCX)2 ] (dpms=4,4'-dipyridylmethyl sulfide; X=S (SCOF-6(S)), X=Se (SCOF-6(Se))) have been synthesized. The 2D framework materials consist of undulating and interpenetrated rhomboid (4,4) nets. SCOF-6(S) displays an incomplete SCO transition with only approximately 30 % conversion of high-spin (HS) to low-spin iron(II) sites over the temperature range 300-4 K (T1/2 =75 K). In contrast, the NCSe(-) analogue, SCOF-6(Se), displays a complete SCO transition (T1/2 =135 K). Photomagnetic characterizations reveal quantitative light- induced excited spin-state trapping (LIES…
CCDC 955785: Experimental Crystal Structure Determination
Related Article: Natasha F. Sciortino, Suzanne M. Neville, Cedric Desplanches, Jean Francois Letard, Victor Martinez, Jose Antonio Real, Boujemaa Moubaraki, Keith Murray, Cameron J. Kepert|2014|Chem.-Eur.J.|20|7448|doi:10.1002/chem.201400367
CCDC 955786: Experimental Crystal Structure Determination
Related Article: Natasha F. Sciortino, Suzanne M. Neville, Cedric Desplanches, Jean Francois Letard, Victor Martinez, Jose Antonio Real, Boujemaa Moubaraki, Keith Murray, Cameron J. Kepert|2014|Chem.-Eur.J.|20|7448|doi:10.1002/chem.201400367
CCDC 955784: Experimental Crystal Structure Determination
Related Article: Natasha F. Sciortino, Suzanne M. Neville, Cedric Desplanches, Jean Francois Letard, Victor Martinez, Jose Antonio Real, Boujemaa Moubaraki, Keith Murray, Cameron J. Kepert|2014|Chem.-Eur.J.|20|7448|doi:10.1002/chem.201400367