Metal complexes compounds

Schmidtke H-H, Degan J (1989) A Dynamic Ligand Field Theory for Vibronic Structures Rationalizing Electronic Spectra of Transition Metal Complex Compounds. 71 99-124 Schneider W (1975) Kinetics and Mechanism of Metalloporphyrin Formation. 23 123-166... 

Molecular Metal Complexes Compounds of this type do not form delocalized electronic bands in the sohd state, and their color is due to intramolecular electronic transitions. Many complexes of transition metals with organic ligands belong to this class. complexes with phenanthroline (red/colorless) and Ru + + with 2,2 -... 

It is important for metal complex compounds to be free from solubilizing groups in order to provide the necessary pigment characteristics. 

Coordination compound. In polymerizations, a metal complex compound whose central atom provides a base for the monomer and the growing polymer to attach to as ligands. 

The material science challenge is to understand better the electronic behavior of the interaction of hydrogen with other elements, especially metals. Complex compounds such as A1(BH4)3 have to be investigated and new compounds formed from lightweight metals and hydrogen will be discovered. 

Mercury(II) sulfide, red, 1 19 Metal complex compounds with diolefins, 6 216... 

Since the epoxidation step involves no formal change in the oxidation state of the metal catalyst, there is no reason why catalytic activity should be restricted to transition metal complexes. Compounds of nontransition elements which are Lewis acids should also be capable of catalyzing epoxidations. In fact, Se02, which is roughly as acidic as Mo03, catalyzes these reactions.433 It is, however, significantly less active than molybdenum, tungsten, and titanium catalysts. Similarly, boron compounds catalyze these reactions but they are much less effective than molybdenum catalysts 437,438 The low activity of other metal catalysts, such as Th(IV) and Zr(IV) (which are weak oxidants) is attributable to their weak Lewis acidity. 

G. E. Herberich, B. Hessner, W. Boveleth, H. Luthe, R. Saive, and L. Zelenka, A Novel and General Route to (ps-Borole)metal Complexes Compounds of Manganese, Ruthenium, and Rhodium, Angew. Chem. Int. Ed. Engl. 22, 996 (1983). 

Humic substances, humic and fulvic acids, are essentially a mixture of compounds of different molecular weights. The total number of base-titratable groups is in the range of 10-20 meq per gram of carbon. Chelation by neighboring carboxyl and phenolic groups is the major mode of metal complexation. Compounds such as malonic acid, phthalic acid, salicylic acid, and catechol serve as convenient monomeric model compounds for estimating the coordi-native properties of humic substances. 

Over the last few years, various hydrogen-metal complex compounds have been investigated as high hydrogen-capacity materials. The following binary and ternary hydrides are well known for their high hydrogen capacity ... 

So-called Werner clathrates are another prominent series of clathrate compounds formed between a metal complex host and an aromatic guest molecule. The name Werner originates from A. Werner, who established the coordination theory of metal complex compounds. The host of the series has a general formula [M(NCS)2(4-Mepy)4], and in fact, the series is obtained conceptually by replacement of C N and NH3 in the Hofmann-type host by SCN and 4-Mepy (4-methylpyridine), respectively. This was done in order to increase the inclusion capability for bulkier substituted aromatic molecules, in particular, those related to the petroleum industry. 

Gansow, O. A., Vernon, W. D., Carbon-13 Nuclear Magnetic Resonance Studies of OrganometaUic and Transition Metal Complex Compounds, Top. Carbon-13 NMR Spectrosc. 2... 

Olefins s. Ethylene derivatives a-Olefins s. Ethylene derivatives, terminal Oligonucleotides, removal of 0-prolective groups 21, 25 —, solid-phase synthesis 19, 33 suppl. 21 Orgaiiometallic compounds (s. a. under individual metals. Metal complex compounds)... 

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