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Single-Scan 13C Diffusion-Ordered NMR Spectroscopy of DNP-Hyperpolarised Substrates

10.1002/chem.201703300

2017-09-22

Taken in one shot: 13C DOSY NMR spectra are obtained in a single scan from DNP-hyperpolarised substrates, using a convection-compensated spatial encoding of the diffusion dimension.

Lanthanide Fluorobenzoates as Bio-Probes: a Quest for the Optimal Ligand Fluorination Degree

10.1002/chem.201703543

2017-09-22

Probe: An in-depth study on the luminescence of fluorinated benzoates of lanthanides was performed, optimizing the fluorination degree of the complexes. This leads to a europium 2-fluorobenzoate dehydrate showing excellent properties, as a viable bio-marker.

Silver–Sulfur Hybrid Supertetrahedral Clusters: The Hitherto Missing Members in the Metal–Chalcogenide Tetrahedral Clusters

10.1002/chem.201703468

2017-09-22

Rise of the silver sulfur: Two silver–sulfur supertetrahedral clusters (SCs) with modified geometry were synthesized through ligand control and characterized by single-crystal X-ray diffraction. Their physical properties were also investigated. These are the ...

Mixed Monosilyl Acetals and Catalyst-Dependent Chemoselective Mukaiyama Aldol Reactions

10.1002/chem.201704456

2017-09-21

We report a direct, simple, and straightforward approach for the construction of a mixed monosilyl acetal as a new and synthetically valuable functional group by mixing an aldehyde, sodium tert-butoxide and trimethylsilyl azide. We also demonstrate catalyst-d...

Cooperative Noncovalent Interactions Induce Ion Pair Separation in Diphenylsilanides

10.1002/chem.201704217

2017-09-21

This crystallographic and computational study describes an unusual potassium silanide structure. A contact ion pair is expected in the solid state between potassium and silicon, yet the potassium cation binds an aromatic ring and the anionic silanide interact...

Halogen contacts-induced unusual coloring in Bi(III) bromide complex: anion-to-cation charge transfer via Br···Br interactions

10.1002/chem.201703747

2017-09-21

A yellow bromobismuthate {(2-BrPy)2H}[BiBr4] (1) transforms into unusually deeply colored cherry-red (2-BrPyH)2[BiBr5] (2). Combination of structural studies and theoretical calculations confirms that appearance of short non-covalent Br···Br interactions (≈ 3...

1-Alkali-metal-2-alkyl-1,2-dihydropyridines: soluble hydride surrogates for catalytic dehydrogenative coupling and hydroboration applications

10.1002/chem.201703609

2017-09-21

Equipped with excellent hydrocarbon solubility, the lithium hydride surrogate 1-lithium-2-t-butyl-1,2-dihydropyridine (1tLi) functions as a precatalyst to convert Me₂NH·BH₃ to [NMe₂BH₂]₂ (89% conversion) under competitive conditions (2.5 mol%, 60h, 80°C, tolu...

Pacman-Compounds: from Energy Transfer to Cooperative Catalysis

10.1002/chem.201703675

2017-09-21

In this concept article we present the syntheses and application of homo and heterodinuclear 'Pacman' compounds. This architecture implies that two metal coordination fragments are brought in close vicinity to each other via a covalent linkage to either suppo...

Synthesis of Tetranuclear Palladium(II) Complexes and their Catalytic Activity for Cross Coupling Reactions

10.1002/chem.201703926

2017-09-21

We have developed a short and simple synthesis of tetranuclear palladium(II) complexes which have been structurally confirmed by X-ray analysis. These complexes were formed in about 30 % overall yield by spontaneous metalation of dimethylaminoarene derivative...

Hybrid Surfactants with N-Heterocyclic Carbene Heads as a Multifunctional Platform for Interfacial Catalysis

10.1002/chem.201703902

2017-09-21

Processing of substrates with different solvent compatibility is a persistent problem in homogeneous catalysis, in particular when one starting compound is water soluble and the other is not. A tempting concept found in literature is micellar catalysis. Howev...