Figure 1 Similarity of H2 interactions with main-group and transition-metal compounds. 上图说的是H2和主族元素以及过渡金属反应的相似性。a中H2的p (HOMO) 和ArMMAr (M=Ge or Sn; Ar’=C6H3-2,6(C6H3-2,6-i-Pr2)2)的n1 (LUMO)前线轨道,这和b中H2与过渡金属M的d轨道反应是可以比较的。 文...
Transition MetalsLow-ValentHomogeneous CatalysisSmall molecule activationSince the latter quarter of the twentieth century, main group chemistry has undergone significant advances. Power's timely review in 2010 highlighted the inherent differences between the lighter and heavier main group elements, and that...
Transition Metals: Definition For an element to be considered a transition metal, its location is truly the defining point. Any element in groups 3 through 12 gets the label. These elements are referred to as transition metals because they serve as the area where elements transition from metals...
Transition Metals: Definition For an element to be considered a transition metal, its location is truly the defining point. Any element in groups 3 through 12 gets the label. These elements are referred to as transition metals because they serve as the area where elements transition from metals...
The introduction of elements besides nonmetal and transition-metal atoms as SAC active centers remains to be explored. In contrast to transition metals, main-group metal elements such as Mg, Al, and Ga, generally exhibit a delocalized s/p-band, which is prone to broaden the adsorbate states22...
Hermann, et al., " Multiple Bonds Between Transition Metals and Main-Group Elements Part 168. methyltrioxorhenium/Lewis base Catalysts in Olefin Epoxidation ", J. Organomet. Chem. 549: 319-322 (1997).Herrmann,W.A.,Ding,H.,Kratzer,R.M.,Kuhn,F.E.,Haider,J.J.,Fischer,R.W.Multiple ...
ChemInform Abstract: Multiple Bonds Between Main Group Elements and Transition Metals. Part 56. Acid-Catalyzed Alkyne/Alkene Coupling at Re(III) Centersorgano‐rhenium compoundsThe alkyne complex (III) is a useful intermediate for organo-Re complexes and can be obtained from the tetrachloride (I) ...
The introduction of elements besides nonmetal and transition-metal atoms as SAC active centers remains to be explored. In contrast to transition metals, main-group metal elements such as Mg, Al, and Ga, generally exhibit a delocalized s/p-band, which is prone to broaden the adsorbate states22...
. 137. Polymeric... Multiple bonds between main-group elements and transition metals. 137. Polymeric...Multiple bonds between main-group elements and transition metals. 137. Polymeric...Investigates a two-dimensional structural model of polymeric methyltrioxorhenium (MTO) established by means of ...
Multiple bonds between transition metals and main-group elements. 73. Synthetic routes to rhenium(V) alkyl and rhenium(VII) alkylidyne complexes. X-ray crystal structures of (.eta.5-C5Me5)Re(:O) (CH3)[CH2C(CH3)3] and (.eta.5-C5Me5)(Br)3R... Multiple bonds between transition ...