Especially the compounds with metal containing Si-O skeletons are discussed as models for silica supported metal catalysts, which structurally resemble transition metal containing surface sites. Finally it is shown that acyclic C=S=N compounds undergo cycloaddition reactions....
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...
High melting points. Malleability. Ductility (that is, the ability to be stretched thin). Example of a transition metal: a gold coin.Transition Elements vs. Main Group Elements Lesson Summary Register to view this lesson Are you a student or a teacher? I am a student I am a teacher Recom...
High melting points. Malleability. Ductility (that is, the ability to be stretched thin). Example of a transition metal: a gold coin.Transition Elements vs. Main Group Elements Lesson Summary Register to view this lesson Are you a student or a teacher? I am a student I am a teacher Recom...
“Multiple bonding between main-group elements and transition metals. 135. Oxorhenium(V) catalysts for the olefination of aldehydes” Organometallics 1994,13... WA Herrmann,W Wagner,UN Flessner,... 被引量: 22发表: 1991年 Multiple bonds between main group elements and transition metals—LXXXI. ...
W. Roesky, "Rings, Clusters and Polymers of Main Group and Transition Elements", Elsevier, Amsterdam, NY, 1989; (f) R. Steudel (Editor), "The ... HR Allcock - Academic 被引量: 56发表: 1967年 ChemInform Abstract: Bifunctional Phosphazenes - Precursors for the Synthesis of Cyclic and Ac...
Principal trends in modern organometallic chemistry of transition and main group elements containing amidinate ligands are analysed. The nature of element–amidinate ligand bonding inferred from the X-ray structural data and computational studies is discussed. Synthesis and reactivity of Group 1–15 me...
Current research efforts on single-atom catalysts (SACs) exclusively focus on nonmetal or transition-metal atoms as active centers, while employing main-group metal elements is seemingly excluded because their delocalized s/p-bands are prone to yield a broadened resonance for the interaction with adso...
HGROUPENUM structure (Windows) C-C++ Code Example: Setting PROPID_Q_BASEPRIORITY List Box Controls Functions Functions Messages Messages Messages Messages BitmapMetadata.System.Collections.Generic.IEnumerable<System.String>.GetEnumerator Method (System.Windows.Media.Imaging) Events Single-Message Transactions...
It is known that the main-group metals and their related materials show poor catalytic activity due to a broadened single resonance derived from the interaction of valence orbitals of adsorbates with the broad sp-band of main-group metals. However, Mg cofactors existing in enzymes are extremely ...