| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Batsanov, A. S.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (2/2 displayed)
- 2003Synthesis and optical characterisation of platinum(II) poly-yne polymers incorporating substituted 1,4-diethynylbenzene derivatives and an investigation of the intermolecular interactions in the diethynylbenzene molecular precursorscitations
- 2001Tungsten(VI) metallacarborane imido complexes; hydrogen bonding to a bent imido ligand in {W(Nt(Bu)2[N(H)C(Me)NHtBu](C2 B9H11}
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article
Tungsten(VI) metallacarborane imido complexes; hydrogen bonding to a bent imido ligand in {W(Nt(Bu)2[N(H)C(Me)NHtBu](C2 B9H11}
Abstract
<p>The amine elimination reaction of W(N<sub>t</sub>Bu)<sub>2</sub>(NH<sup>t</sup>Bu)<sub>2</sub> with the di-basic carborane acid nido-7,8-C<sub>2</sub>B<sub>9</sub>H<sub>13</sub> generates the tungsten(IV) carborane complex, [W(N<sup>t</sup>Bu)(NH<sup>t</sup>Bu)<sub>2</sub>(C<sub>2</sub>B<sub>9</sub> H<sub>11</sub>] 1, in which a C<sub>2</sub>B<sub>9</sub>H<sub>11</sub> ligand has replaced one imido ligand. One of the remaining amido ligands can be substituted by acidic functions, thus 2,6-dimethylphenol yields [W(N<sup>t</sup>Bu)(NH<sup>t</sup>Bu)(2,6-Me<sub>2</sub>C<sub>6</sub> H<sub>3</sub>O)(C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)] 2, and water gives the μ-oxo complex {[W(N<sup>t</sup>Bu)(NH<sup>t</sup>Bu)(C<sub>2</sub>B<sub>9</sub> H<sub>11</sub>)]<sub>2</sub>(μ-O)} 3 as a mixture of racemic and meso diastereomers. Complexes 1 and 2 have been characterised by single crystal X-ray diffraction, revealing that replacing an amido ligand in 1 by a weaker π-donor phenoxide in 2 results in shorter metal-amido and metal-dicarbollide distances. Substitution of one amido ligand in 1 by a chloro ligand is achieved using Me<sub>3</sub>SiCl giving [W(N<sup>t</sup>Bu)(NH<sup>t</sup>Bu)Cl(C<sub>2</sub>B<sub>9</sub> H<sub>11</sub>)] 4. Insertion of acetonitrile into the tungsten amido bond, followed by proton transfer gives {W(N<sup>t</sup>Bu)<sub>2</sub>[N(H)C(Me)NH<sup>t</sup>Bu](C<sub>2</sub> B<sub>9</sub>H<sub>11</sub>)} 5, the N-tert-butyl acetamidine adduct of the unknown M(1σ2π)<sub>3</sub> complex [W(N<sup>t</sup>Bu)<sub>2</sub>(C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)]. A structural study by X-ray diffraction reveals tat compound 5 contains one short linear (W-N 1.750(3) Å; W-N-C 173.8(3)°) and one longer bent (1.795(3) Å, 151.4(3)°) imido ligand, with a hydrogen bond between the amidine and bent imido ligand, demonstrating for the first time that a sp<sup>2</sup> hybridised bent imido ligand can act as a hydrogen bond acceptor.</p>