인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
This study reports the stabilizing effect of an intramolecularly coordinated thioether function in propene complexes of the general formula [{η<sup>5</sup>:κ<i>S</i>-C<sub>5</sub>H<sub>4</sub>(CH<sub>2</sub>)<sub>2</sub>SR}M(CO)<sub>2</sub>(η<sup>2</sup>-C<sub>2</sub>H<sub>3</sub>Me)][BF<sub>4</sub>] (M = Mo, W; R = Et, Ph). They are formed by protonation of allyl analogues [{η<sup>5</sup>-C<sub>5</sub>H<sub>4</sub>(CH<sub>2</sub>)<sub>2</sub>SR}M(CO)<sub>2</sub>(η<sup>3</sup>-C<sub>3</sub>H<sub>5</sub>)] by tetrafluoroboric acid in non-coordinating solvents. In contrast to analogues with unsubstituted Cp ligands, these propene complexes are isolable in a pure form and characterized by NMR spectroscopy. The molybdenum compounds are stable at low temperature and the propene ligand can easily be exchanged by thioethers or acetonitrile. Several representatives of the reaction products were characterized by X-ray structure analysis. The stabilization effect in tungsten complexes [{η<sup>5</sup>:κ<i>S</i>-C<sub>5</sub>H<sub>4</sub>(CH<sub>2</sub>)<sub>2</sub>SR}W(CO)<sub>2</sub>(η<sup>2</sup>-C<sub>2</sub>H<sub>3</sub>Me)][BF<sub>4</sub>] (R = Et, Ph) was unusually high. The compounds are long-term stable at room temperature and do not undergo ligand exchange reactions even with strong chelators such as 1,10-phenanthroline. The molecular structure of the tungsten propene complex was confirmed by X-ray diffraction analysis on a single crystal.
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