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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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Taccardi, Nicola |
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Petrov, R. H. | Madrid |
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Casati, R. |
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Ali, M. A. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Wagler, Jörg
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article
Palladastannatrane - A PdII→SnIV dative bond
Abstract
<p>The reaction of N-methyl-2-mercaptoimidazole (methimazole, Hmt) with NaN(SiMe<sub>3</sub>)<sub>2</sub>, [PdCl<sub>2</sub>(L)<sub>3</sub>] (L = PPh<sub>3</sub>, NCMe) and SnCl<sub>4</sub> provides the novel tetrabicyclo[3.3.3.3.0] lantern compound [PdSn(μ-mt)<sub>4</sub>Cl <sub>2</sub>] (1) in which a dative Pd<sup>II</sup>→Sn<sup>IV</sup> bond is housed within the cage structure. Single-crystal X-ray diffraction analysis reveals a Pd-Sn separation of 2.605(1) Å in this compound, and the cation [PdSn(mt)<sub>4</sub>Cl]<sup>+</sup> was detected by ESI-MS analysis of an acetonitrile solution of [PdSn(μ-mt)<sub>4</sub>Cl<sub>2</sub>]. Quantum chemical analysis of the Pd-Sn bonding situation revealed predominant electrostatic interactions between the positively charged Sn and the negatively charged Pd atom.</p>