Dalton Transactions

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Copolymerization of cyclohexene oxide with CO2 catalyzed by tridentate N-heterocyclic carbene titanium(IV) complexes

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4242-4246
DOI: 10.1039/C3DT52804A, CommunicationCoralie C. Quadri, Erwan Le Roux
A new class of complexes based on titanium(IV) bearing a bisanionic mer-tridentate N-heterocyclic carbene ligand were investigated for the copolymerization of cyclohexene oxide with CO2. Upon addition of [PPN]X[prime or minute] salts, all complexes were found to be active and highly selective toward the formation of PCHC.
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A metallacyclic alkyl-amido carbene complex (MCAAC)

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4313-4319
DOI: 10.1039/C3DT52591K, PaperIna Trapp, Sandra Gonzalez-Gallardo, Silvia Hohnstein, Delphine Garnier, Pascual Ona-Burgos, Frank Breher
The preparation and structure of the first metallacyclic alkyl-amido carbene complex is reported, including NMR spectroscopic, computational and cyclic voltammetry studies of the bimetallic RuII-IrIII complex (see figure).
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Engineering microstructure and redox properties in the mixed conductor Ce0.9Pr0.1O2-[small delta] + Co 2 mol%

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4305-4312
DOI: 10.1039/C3DT52167B, PaperMaria Balaguer, Cecilia Solis, Stefan Roitsch, Jose M. Serra
The systematic study of Ce0.9Pr0.1O2-[small delta] + Co 2 mol% sintering conditions allowed the microstructure and mixed ionic-electronic transport to be tailored.
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State of the art of Lewis acid-containing zeolites: lessons from fine chemistry to new biomass transformation processes

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4197-4208
DOI: 10.1039/C3DT52293H, PerspectiveManuel Moliner
New transition metal-containing zeolites presenting Lewis acid character show unique catalytic applications in fine chemistry processes and novel biomass-transformation.
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Tuning ligand electronics and peripheral substitution on cobalt salen complexes: structure and polymerisation activity

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4295-4304
DOI: 10.1039/C3DT51846A, PaperLinus Chiang, Laura E. N. Allan, Juan Alcantara, Michael C. P. Wang, Tim Storr, Michael P. Shaver
A series of cobalt salen complexes, where salen represents an N2O2 bis-Schiff-base bis-phenolate framework, are prepared, characterised and investigated for reversible-termination organometallic mediated radical polymerisation (RT-OMRP).
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The first enantiopure lanthanoid cryptate

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4238-4241
DOI: 10.1039/C3DT51289D, CommunicationTuba Guden-Silber, Christine Doffek, Carlos Platas-Iglesias, Michael Seitz
The first enantiomerically pure 2,2[prime or minute]-bipyridine-based cryptand and the corresponding luminescent ytterbium cryptate are reported.
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Towards cancer cell-specific phototoxic organometallic rhenium(I) complexes

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4287-4294
DOI: 10.1039/C3DT51817E, PaperAnna Leonidova, Vanessa Pierroz, Riccardo Rubbiani, Jakob Heier, Stefano Ferrari, Gilles Gasser
The use of Re(I) organometallic complexes and bioconjugates thereof as photosensitizers for photodynamic therapy purposes is presented.
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[Ru([small eta]5-C5H5)([small eta]6-C10H8)]PF6 as a catalyst precursor for the one-pot direct C-H alkenylation of nitrogen heterocycles

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4565-4572
DOI: 10.1039/C3DT52984C, PaperJason M. Lynam, Lucy M. Milner, Neetisha S. Mistry, John M. Slattery, Sally R. Warrington, Adrian C. Whitwood
The ruthenium naphthalene complex [Ru([small eta]5-C5H5)([small eta]6-C10H8)]+ is a catalyst precursor for the direct C-H alkenylation of pyridine and related nitrogen heterocycles by terminal alkynes.
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Chiral phenoxyimino-amido aluminum complexes for the asymmetric cyanation of aldehydes

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4530-4536
DOI: 10.1039/C3DT53292E, PaperJ. Ternel, F. Agbossou-Niedercorn, R. M. Gauvin
AlEt3 reacts with chiral phenoxyimine sulfonamides to afford mono-ethyl complexes that catalyze asymmetric addition of SiMe3CN to aldehydes with high yield and good to excellent enantioselectivity.
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Computational insights into carbon-carbon homocoupling reactions mediated by organolanthanide(III) complexes

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4520-4529
DOI: 10.1039/C3DT52937A, PaperChristos E. Kefalidis, Lionel Perrin, Laurent Maron
Homocoupling of terminal alkynes into trienediyl complexes by samarocenes is controlled by the right combination of sterics of the ancillary ligands.
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Interweaving spins with their environment: novel inorganic nanohybrids with controllable magnetic properties

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4220-4232
DOI: 10.1039/C3DT52650J, PerspectiveChristian Cervetti, Eric Heintze, Lapo Bogani
We discuss the developments in the synthesis and characterization of magnetic nanohybrids made of molecular magnets and nanostructured materials.
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Coordination and conformational isomers in mononuclear iron complexes with pertinence to the [FeFe] hydrogenase active site

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4537-4549
DOI: 10.1039/C3DT53268B, PaperAndreas Orthaber, Michael Karnahl, Stefanie Tschierlei, Daniel Streich, Matthias Stein, Sascha Ott
6 Fe complexes of the type [Fe(X-bdt)(PR2NPh2)(CO)] were prepared and the possibility to tune their electronic properties by ligand modification was demonstrated. IR spectroscopic and computational studies suggest that the compounds exist as a mixture of isomers in solution.
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[IrCl{N(CHCHPtBu2)2}]-: a versatile source of the IrI(PNP) pincer platform

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4506-4513
DOI: 10.1039/C3DT53304B, PaperMarkus Kinauer, Markus G. Scheibel, Josh Abbenseth, Frank W. Heinemann, Peter Stollberg, Christian Wurtele, Sven Schneider
The iridium(II) complex [IrCl{N(CHCHPtBu2)2}] is reduced by KC8 to give the anionic iridium(I) pincer complex [IrCl{N(CHCHPtBu2)2}]- which was isolated and fully characterized upon stabilization of the counter cation with crown ether as [K(15-cr-5)2][IrCl{N(CHCHPtBu2)2}].
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DFT study on the reaction mechanism of the ring closing enyne metathesis (RCEYM) catalyzed by molybdenum alkylidene complexes

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4573-4586
DOI: 10.1039/C3DT53242A, PaperXavier Solans-Monfort
DFT calculations show that the RCEYM reaction catalyzed by Mo-based catalysts proceeds preferentially through an yne-then-ene mechanism and that the endo-/exo- selectivity mainly depends on sterics.
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Zinc and cobalt complexes based on tripodal ligands: synthesis, structure and reactivity toward lactide

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4550-4564
DOI: 10.1039/C3DT52629A, PaperMathieu J.-L. Tschan, Jia Guo, Sumesh K. Raman, Emilie Brule, Thierry Roisnel, Marie-Noelle Rager, Remi Legay, Guillaume Durieux, Baptiste Rigaud, Christophe M. Thomas
Polymerization of lactide takes place in the presence of cobalt and zinc chloro complexes to yield polymers under solvent free conditions.
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Post-synthetic preparation of Sn-, Ti- and Zr-beta: a facile route to water tolerant, highly active Lewis acidic zeolites

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4514-4519
DOI: 10.1039/C3DT52972J, PaperPatrick Wolf, Ceri Hammond, Sabrina Conrad, Ive Hermans
Convenient synthesis of water-tolerant Lewis acidic beta zeolites opens new horizons for sustainable catalytic applications.
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Yellow-light sensitization of a ligand photosubstitution reaction in a ruthenium polypyridyl complex covalently bound to a rhodamine dye

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4494-4505
DOI: 10.1039/C3DT52643G, PaperAzadeh Bahreman, Jordi-Amat Cuello-Garibo, Sylvestre Bonnet
A rhodamine dye was covalently attached to a ruthenium complex to enhance the rate of ligand photosubstitution under yellow light irradiation.
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Synthesis, structure and reactivity of Ni site models of [NiFeSe] hydrogenases

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4483-4493
DOI: 10.1039/C3DT52967C, PaperClaire Wombwell, Erwin Reisner
A series of structural models of the Ni centre in [NiFeSe] hydrogenases display reactivity relevant to the enzyme.
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Mechanism of phenol oxidation by heterodinuclear Ni Cu bis([small mu ]-oxo) complexes involving nucleophilic oxo groups

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4264-4267
DOI: 10.1039/C3DT52644E, CommunicationSubrata Kundu, Enrico Miceli, Erik R. Farquhar, Kallol Ray
Both PCET and HAT mechanisms can be feasible for the oxidation of phenols by heterodinuclear CuIII([small mu ]-O)2NIII complexes.
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Metal-assisted conversion of an N-ylide mesomeric betaine into its carbenic tautomer: generation of N-(fluoren-9-yl)imidazol-2-ylidene complexes

24 February, 2014 - 08:17

Dalton Trans., 2014, 43,4474-4482
DOI: 10.1039/C3DT53089B, PaperLaure Benhamou, Stephanie Bastin, Noel Lugan, Guy Lavigne, Vincent Cesar
9-(Imidazolium-3-yl)fluorenide, an N-ylide mesomeric betaine, isomerises only upon complexation to afford the corresponding monoligated N-heterocyclic carbene complexes, via a fluorenyl-coordinated intermediate.
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