منابع مشابه
Mono-anionic acetophenone imine ligands: synthesis, ortho-lithiation and first examples of group (V) metal complexes.
A series of niobium and tantalum imido complexes with mono-anionic ortho-metallated acetophenone imine ligands have been prepared and characterized using NMR spectroscopy, mass spectrometry and elemental analysis. These low symmetry complexes are produced with only one or two structural isomers in all cases and display interesting correlations between the steric bulk of the ligands employed and...
متن کاملAssembling anionic Sb(V)/(III) containing polyoxostibonates stabilized by triphenyltellurium cations.
Reactions of diphenyltellurium oxide with organostibonic acid and polymeric triphenylantimony oxide have been investigated independently. Single crystal X-ray diffraction studies have revealed the formation of novel and rare mixed valent Sb(v)/(iii) containing polyoxostibonates {(C6H5)3Te}2{Na2(H2O)2(p-Br-C6H4Sb(V))10(Sb(III))4[(C6H5)2Te]4(O)30(OH)4} and {(C6H5)3Te}4{[(C6H5)2Sb(V)]4(Sb(III))4(O...
متن کاملAnionic Vinyl Polymerization
The concept of anionic polymerization was first developed by Ziegler and Schlenk in early 1910. Their pioneering work on the polymerization of diene initiated with sodium metal set the stage for the use of alkali metal containing aromatic hydrocarbon complexes as initiators for various α-olefins. In 1939, Scott and coworkers used for the first time the alkali metal complexes of aromatic hydroca...
متن کاملAnionic regions in nuclear proteins
Recent technological advances have generated a flood of protein sequence data, much of it deduced from the DNA sequences of cloned genes. In this commentary I will discuss an unexpected sequence motif found in a number of proteins that are thought to interact directly or indirectly with DNA. The motif, which I will term an Aregion (acidic region), is a local high concentration of acidic residue...
متن کاملBound anionic states of adenine.
Anionic states of nucleic acid bases are involved in DNA damage by low-energy electrons and in charge transfer through DNA. Previous gas phase studies of free, unsolvated nucleic acid base parent anions probed only dipole-bound states, which are not present in condensed phase environments, but did not observe valence anionic states, which for purine bases are thought to be adiabatically unbound...
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ژورنال
عنوان ژورنال: Bulletin of The Japan Petroleum Institute
سال: 1971
ISSN: 0582-4656
DOI: 10.1627/jpi1959.13.61