Uranyl organometallic complexes featuring uranium(VI)-carbon single and double bonds have been obtained from uranyl UO(2)X(2) precursors by avoiding reduction of the metal center. X-ray diffraction and density functional theory analyses of these complexes showed that the U-C and U=Cbonds are polarizedtoward the nucleophilic carbon.
通过避免金属中心的还原,已经从铀酰 UO(2)X(2) 前体中获得了以铀 (VI)-碳单键和双键为特征的铀酰有机金属配合物。这些配合物的 X 射线衍射和密度泛函理论分析表明,UC 和 U=C 键向亲核碳极化。
PCP-bridged chalcogen-centred anions: coordination chemistry and carbon-based reactivity
Chem. Int. Ed., 2004, 43, 6382), numerous transition metal, lanthanide and actinide complexes of bis(thiophosphinoyl) carbene ligands have been investigated with an emphasis on the electronicstructure and reactivity of the metal–carbonbonds. This Perspective begins by discussing main group (s- and p-block) complexes of this ligand and draws attention to differences compared to their d and f-block analogues
Coordination Behavior of the S–C–S Monoanion and O–C–O and S–C–S Dianions toward Co
<sup>II</sup>
作者:Hadrien Heuclin、Thibault Cantat、Xavier Frédéric Le Goff、Pascal Le Floch、Nicolas Mezailles
DOI:10.1002/ejic.201100144
日期:2011.6
The reactivity of both the monoanionic and dianionic forms of bis(diphenylthiophosphinoyl)methane (2– and 22–) as well as the dianion of tetraisopropyl methylenediphosphonate(32–) was investigated towards the same CoII precursor CoCl2. Monoanion 2– coordination yields a homoleptic zwitterionic CoII complex. However, both dianions (22– and 32–) give the same overall structure with a square Co2C2 core