0000000001315241
AUTHOR
Grigore A. Timco
showing 8 related works from this author
Formation of an interlocked double-chain from an organic-inorganic [2]rotaxane.
2019
Here we show that a structure containing a polymeric interlocking daisy chain is obtained from the reaction of an inorganic–organic [2]rotaxane [HB{CrIII7NiII(μ-F)8(O2CtBu)16}], where B is an organic thread terminated with a bi-pyridyl unit, with an oxo-centered metal carboxylate triangle [FeIII2CoII(μ3-O)(O2CtBu)6(HO2CtBu)3].
Structural and magnetic investigations of the mixed-valence Fe(II,III) two-dimensional layer complex, [Fe2(II) Fe2(III)(HCOO)10(C6H7N)6]n.
2004
The structure of the complex, [Fe2(II)Fe2(III)(HCOO)10(C6H7N6)n, (1) exhibits a neutral two-dimensional layer network of alternating iron(II) and iron(III) ions, bridged equatorially by formate groups. All iron atoms are octahedrally coordinated, with iron(III) coordinating axially to one gamma-picoline and one formate group, while the iron(II) centers interact axially with two gamma-picoline groups, above and below the layer plane. The complex crystallizes in the triclinic space group P1 at all studied temperatures [at 120 K, the cell dimensions are: a = 10.228(1), b = 12.071(1), c = 12.072(1) A, alpha = 89.801(2), beta = 71.149(2), gamma = 73.371(2) degrees]. An intralayer antiferromagnet…
A [13]rotaxane assembled via a palladium molecular capsule
2019
Molecules that are the size of small proteins are difficult to make. The most frequently examined route is via self-assembly, and one particular approach involves molecular nanocapsules, where ligands are designed that will enforce the formation of specific polyhedra of metals within the core of the structure. Here we show that this approach can be combined with mechanically interlocking molecules to produce nanocapsules that are decorated on their exterior. This could be a general route to very large molecules, and is exemplified here by the synthesis and structural characterization of a [13]rotaxane, containing 150 metal centres. Small angle X-ray scattering combined with atomistic molecu…
Studies of a molecular hourglass: synthesis and magnetic characterisation of a cyclic dodecanuclear {Cr10Cu2} complex.
2006
The synthesis, structure, EPR, and magnetic studies of two dodecanuclear heterometallic cyclic clusters are reported. The compounds have the general formula [R(2)NH(2)](2)[Cr(10)Cu(2)F(14)(O(2)CCMe(3))(22)] (R=Me, 1 or iPr, 2). Both structures contain an array of metal centers which describe an approximate "hourglass", with an ammonium cation in the center of each half of the figure. The chromium sites are all six-coordinate, with the two copper sites five-coordinate. The majority of metal-metal edges are bridged by a single fluoride and two pivalate ligands, while two Cr--Cu edges are bridged by a single fluoride and a single pivalate. Magnetic studies show that 1 and 2 exhibit similar (bu…
A family of heterometallic wheels containing potentially fourteen hundred siblings
2005
The synthesis and structure of new heterometallic wheels are reported, with preliminary studies of selected compounds.
CCDC 1572780: Experimental Crystal Structure Determination
2019
Related Article: Jesús Ferrando-Soria, Antonio Fernandez, Iñigo J. Vitorica-Yrezabal, Deepak Asthana, Christopher A. Muryn, Floriana Tuna, Grigore A. Timco, Richard E. P. Winpenny|2019|Chem.Commun.|55|2960|doi:10.1039/C8CC09339C
CCDC 1860091: Experimental Crystal Structure Determination
2019
Related Article: Jesus Ferrando-Soria, Antonio Fernandez, Deepak Asthana, Selina Nawaz, Iñigo J. Vitorica-Yrezabal, George F. S. Whitehead, Christopher A. Muryn, Floriana Tuna, Grigore A. Timco, Neil D. Burton, Richard E. P. Winpenny |2019|Nat.Commun.|10|3720|doi:10.1038/s41467-019-11635-6
CCDC 1572781: Experimental Crystal Structure Determination
2019
Related Article: Jesús Ferrando-Soria, Antonio Fernandez, Iñigo J. Vitorica-Yrezabal, Deepak Asthana, Christopher A. Muryn, Floriana Tuna, Grigore A. Timco, Richard E. P. Winpenny|2019|Chem.Commun.|55|2960|doi:10.1039/C8CC09339C