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Chelate ligand

Copper(I) tends towards a tetrahedral coordination geometry in complexes. With 2,2 -bipyr-idine as a chelate ligand a distorted tetrahedral coordination with almost orthogonal ligands results. 2,2 -Bipyridine oligomers with flexible 6,6 -links therefore form double helices with two 2,2 -bipyridine units per copper(I) ion (J. M. Lehn, 1987,1988). J. M. Lehn (1990 U. Koert, 1990) has also prepared such helicates with nucleosides, e.g., thymidine, covalently attached to suitable spacers to obtain water-soluble double helix complexes, so-called inverted DNA , with internal positive charges and external nucleic bases. Cooperative effects lead preferentially to two identical strands in these helicates when copper(I) ions are added to a mixture of two different homooligomers. [Pg.345]

R SiH and CH2= CHR interact with both PtL and PtL 1. Complexing or chelating ligands such as phosphines and sulfur complexes are exceUent inhibitors, but often form such stable complexes that they act as poisons and prevent cute even at elevated temperatures. Unsaturated organic compounds are preferred, such as acetylenic alcohols, acetylene dicarboxylates, maleates, fumarates, eneynes, and azo compounds (178—189). An alternative concept has been the encapsulation of the platinum catalysts with either cyclodextrin or in thermoplastics or siUcones (190—192). [Pg.48]

Phosphorus Donors. Phosphine coordination complexes of thorium are rare because the hard Th(IV) cation favors harder ligand donor types. The only stable thorium—phosphine coordination complexes isolated as of the mid-1990s contain the chelating ligand,... [Pg.38]

Titanium chelates are formed from tetraalkyl titanates or haUdes and bi- or polydentate ligands. One of the functional groups is usually alcohoHc or enoHc hydroxyl, which interchanges with an alkoxy group, RO, on titanium to Hberate ROH. If the second function is hydroxyl or carboxyl, it may react similarly. Diols and polyols, a-hydroxycarboxyflc acids and oxaUc acid are all examples of this type. P-Keto esters, P-diketones, and alkanolamines are also excellent chelating ligands for titanium. [Pg.144]

A cooidination compound that has a chelating ligand in a ting around the metal ion is termed a macrocycle. Heme (1), the iron porphryn derivative... [Pg.166]

Several of the catena-Scx anions have proved to be effective chelating ligands to both main-group and transition metals. Synthesis of the... [Pg.763]

As with other high coordination numbers, there seems to be little difference in energy between these structures. Factors such as the number of counter ions and the stereochemical requirements of chelating ligands are probably decisive and a priori arguments are unreliable in predicting... [Pg.916]

A few cases of optical isomerism are known for planar and tetrahedral complexes involving unsymmetrical bidentate ligands, but by far the most numerous examples are afforded by octahedral compounds of chelating ligands, e.g. [Cr(oxalate)3] and [Co(edta)] (Fig. 19.13). [Pg.919]

Complexes of cobalt(III) with O-donor ligands are generally less stable than those with Af-donors although the dark-green [Co(acac)3] and M iCo-( 204)3] complexes, formed from the chelating ligands acetylacetonate and oxalate, are stable. Other carboxylato complexes such as those of... [Pg.1124]


See other pages where Chelate ligand is mentioned: [Pg.76]    [Pg.235]    [Pg.76]    [Pg.429]    [Pg.532]    [Pg.439]    [Pg.58]    [Pg.162]    [Pg.163]    [Pg.164]    [Pg.330]    [Pg.30]    [Pg.62]    [Pg.381]    [Pg.393]    [Pg.166]    [Pg.3]    [Pg.130]    [Pg.171]    [Pg.219]    [Pg.101]    [Pg.238]    [Pg.494]    [Pg.593]    [Pg.670]    [Pg.763]    [Pg.784]    [Pg.906]    [Pg.911]    [Pg.917]    [Pg.952]    [Pg.1031]    [Pg.1060]    [Pg.1089]    [Pg.1172]    [Pg.1188]    [Pg.1196]    [Pg.1236]    [Pg.1236]    [Pg.1247]    [Pg.1276]   
See also in sourсe #XX -- [ Pg.78 ]

See also in sourсe #XX -- [ Pg.68 ]

See also in sourсe #XX -- [ Pg.96 ]

See also in sourсe #XX -- [ Pg.16 , Pg.29 , Pg.34 , Pg.39 , Pg.54 , Pg.55 , Pg.56 , Pg.60 , Pg.61 , Pg.62 , Pg.63 , Pg.64 , Pg.65 , Pg.66 , Pg.71 , Pg.77 , Pg.78 , Pg.79 , Pg.82 , Pg.83 , Pg.84 , Pg.93 , Pg.197 ]




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2,2 -Bipyridine, as a chelating ligand reaction of molybdenum carbonyl complexes

Advantages of Chelating Polydentate Ligands

Amidines chelating ligands

Amido ligands chelate

Anionic chelating ligands

Beryllium chelating ligands

Bis N-heterocyclic chelate ligand

Bis-silyl Chelate Ligand Precursor XantsilH2 and Some Ruthenium Xantsil Complexes

Bis-silyl chelate ligand

Bite angle of chelate ligands

C,N-chelating ligands

C,Y-chelating ligands

Catalysts Bearing Chelating Ligands

Chelate effect, polydentate ligands

Chelate ligand modification

Chelate tetradentate tripodal ligands

Chelate-type ligands

Chelated ligand

Chelated ligand

Chelated organic ligands

Chelated organic ligands amides

Chelated organic ligands hydrolysis

Chelated organic ligands nitration

Chelated organic ligands nucleophilic reactions

Chelated organic ligands oxidation-reduction reactions

Chelated organic ligands reactions

Chelated organic ligands synthetic applications

Chelates with Acyclic Ligands

Chelating TMEDA ligands

Chelating agent Complexing ligand that forms more

Chelating amide ligands

Chelating dicarbene ligands

Chelating diphosphine ligands

Chelating dppp-like ligands

Chelating ligands adducts

Chelating ligands antimony

Chelating ligands bismuth

Chelating ligands cadmium

Chelating ligands cations

Chelating ligands chromium

Chelating ligands copper

Chelating ligands hexanuclear clusters

Chelating ligands manganese

Chelating ligands metallic complexes

Chelating ligands mixed ligand structures

Chelating ligands nickel adducts

Chelating ligands organotin structures

Chelating ligands ruthenium

Chelating ligands sulfur, selenium, tellurium

Chelating ligands supramolecular assemblies

Chelating ligands tellurium

Chelating ligands trans

Chelating ligands vanadium

Chelating ligands xanthate structures

Chelating ligands, hexacoordinate

Chelating ligands, hexacoordinate complexes

Chelating nitrogen ligands

Chelating phosphorus ligands

Chelating pyridine ligands

Chelation bridging ligands

Chelation ligand shape

Chelation synthetic ligands

Chiral aminophosphine chelate ligands

Chiral chelating ligands

Chromium complexes chelating ligands

Cobalt complexes chelating ligands

Complex Formation with Chelating Ligands

Complexes with Chelating Ligands

Compounds Containing an X,Y-Carboranyl Chelating Ligand

Coordination compounds chelating ligands

Diphosphine ligands, chelating, effect

Donor-functionalized chelating ligands

Dye Polymers Constructed from Chelating Pyridine Ligands

Environmental natural chelating ligands

Ethylenediamine as chelating ligand

Hemilabile chelating carbene ligand

Imidazole-containing chelate ligands

Iridium complexes chelating ligands

Iron complexes chelating ligands

Iron(III) complexes with chelating ligands

Ligand bridging-chelating

Ligand chelating bisphosphines

Ligands and chelation

Ligands chelate ring size

Ligands chelate-forming

Ligands chelating

Ligands chelation

Ligands chelation

Ligands chiral chelate

Ligands glycine chelates

Ligands polydentate (chelating

Localized chelated ligands

Magnesium chelating ligand

Manganese complexes chelating ligands

Metal chelate ligands

Metathesis with Anionic Chelating Ligands

Mixed donor chelate ligands

Mixed-ligand tris-chelates

Multidentate chelating ligands

Natural chelating ligands

O-chelating ligands

Organoaluminum Cations Supported by Tridentate Chelating Ligands

Organotin Compounds Containing a C,Y-Chelating Ligand

Osmium complexes chelating ligands

Other Chelating Amido Ligands

P,N chelating ligands

Palladium and Chelating Nitrogen Ligands

Peptide ligands chelating effects

Platinum complexes chelating phosphorus ligands

Polydentate ligands chelation

Polydentate ligands simple chelation

Polypyridyl chelating ligands

Pyrazolate-based chelate ligands

Reactions of Chelated Organic Ligands

Reactions of Chelated Organic Ligands Quintus Fernando

Rhenium complexes chelating ligands

Rhodium complexes chelating ligands

Ruthenium chelating indenylidene ligand

Ruthenium complexes chelating ligands

Ruthenium complexes chiral chelating ligands

Sepulchrates chelating ligands

Supramolecular Construction of Chelating Bidentate Ligand Libraries through Hydrogen Bonding Concept and Applications in Homogeneous Metal Complex Catalysis

Synthesis of Metal Complexes Containing Chelated Allyl Ligands

Synthetic Applications of Chelated Ligand Reactions

Thioethers chelating ligands

Triazines chelating ligands

Tridentate facially chelating ligands

Use of Organoaluminum Species Supported by Chelating Ligands Selected Examples

Vanadium coordination compounds chelating ligands

Vinyl-disulfide-chelating ligand

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