Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Complexes Containing

While experimental measurements of the water dimer in the gas phase had yielded an unambiguous linear structure, the results for were less clear . Cyclic and bifurcated [Pg.79]

A more recent examination of the linear H2S dimer, using a heavily polarized [9s,6p,3d,f] basis set for 8 °, yielded an MP2 interaction energy of 1.7 kcal/mol, corrected for B88E. The authors projected an infinite-basis set limit of 1.9 kcal/mol for this quantity. This calculation also confirmed the lack of any real binding at the SCF level. [Pg.80]


Lead iV) fluoride, Pbp4, strong fluorinating agent (PbFa plus F2). Forms complexes containing the [PbFft] " ion. [Pg.237]

Tiianium lII) fluoride, TiF3. Formed Ti or TiHj. plus anhydrous HF at 700 C. Blue stable solid. Complexes containing [TiF ] " ions are known. [Pg.399]

Tunable visible and ultraviolet lasers were available well before tunable infrared and far-infrared lasers. There are many complexes that contain monomers with visible and near-UV spectra. The earliest experiments to give detailed dynamical infonnation on complexes were in fact those of Smalley et al [22], who observed laser-induced fluorescence (LIF) spectra of He-l2 complexes. They excited the complex in the I2 B <—A band, and were able to produce excited-state complexes containing 5-state I2 in a wide range of vibrational states. From line w idths and dispersed fluorescence spectra, they were able to study the rates and pathways of dissociation. Such work was subsequently extended to many other systems, including the rare gas-Cl2 systems, and has given quite detailed infonnation on potential energy surfaces [231. [Pg.2447]

The species resulting from the hydrolysis of hydrated cations such as those mentioned here are often highly complex, containing more than one metal atom (i.e. they may be polynuclear). The description here is simplified to show the essentials of the processes. [Pg.46]

Here also the rings are uncharged, and the complex contains chromium (0). [Pg.383]

This interpretation is supported by literature studies on copper(II) complexes containing two -amino-acid ligands. For N-unsubstituted -amino-acid ligands, deductions as to position of the cis -trans geometrical equilibrium in solution are difficult as illustrated by the fact that for some -amino acids solid complexes have been isolated of both the ds and trans geometry. In contrast it seems as if copper(II) complexes containing two N-alkylated -amino-acid ligands crystallise exclusively in the trans form ". ... [Pg.95]

Crystallization and Purification Solvent. Dimethylacetamide is useful ia the purification by crystallization of aromatic dicarboxyHc acids such as terephthahc acid [100-21-0] and/vcarboxyphenylacetic acid [501-89-3]. These acids are not soluble ia the more common solvents. DMAC and dibasic acids form crystalline complexes containing two moles of the solvent for each mole of acid (16). Microcrystalline hydrocortisone acetate [50-03-3] having low settling rate is prepared by crystallization from an aqueous DMAC solution (17). [Pg.85]

The PSII complex contains two distinct plastoquiaones that act ia series. The first is the mentioned above the second, Qg, is reversibly associated with a 30—34 kDa polypeptide ia the PSII cote. This secondary quiaone acceptor polypeptide is the most rapidly tumed-over proteia ia thylakoid membranes (41,46). It serves as a two-electron gate and connects the single-electron transfer events of the reaction center with the pool of free... [Pg.42]

EthylenediaminetetraaceticAcid. Ethylenediaminetetraacetic acid (EDTAH has six potential donor groups two nitrogen atoms and four carboxylate groups. If EDTA 4— acts as a hexadentate ligand to a metal, the resulting complex contains five five-membered chelate rings and has a charge that is four less than that of the metal ion. [Pg.438]

Attempts to isolate GTF from brewer s yeast have resulted in production of very active concentrates, but the substance is too labile to be obtained in the soHd state (136). However, it has been shown that GTF is a Cr(III) complex containing two coordinated nicotinate radicals and other amino acid anions (146). Active preparations containing similar complexes have been synthesi2ed (147). Chromium deficiency may also lead to atherosclerosis and peripheral neuropathy. [Pg.387]

The dinuclear ion Mo2(S2) g (F - prepared from the reaction of molybdate and polysulfide solution (13) is a usehil starting material for the preparation of dinuclear sulfur complexes. These disulfide ligands are reactive toward replacement or reduction to give complexes containing the Mo2S " 4 core (Fig. 3f). [Pg.471]

Zirconocene complexes containing two indenyl or tetrahydroindenyl groups bridged with short links such as —CH2—CH2— or —Si(CH3)— can produce isotactic polymers of higher a-olefins (32). To synthesize syndiotactic PO, bridged zirconocene complexes with rings of two different types are required, one example of which is isopropyl(cyclopentadienyl)(l-fluorenyl)zirconocene. These complexes are used for the synthesis of syndiotactic PB... [Pg.430]

Metallocene Catalysts. Polymerization of cycloolefins with Kaminsky catalysts (combinations of metallocenes and methylaluminoxane) produces polymers with a completely different stmcture. The reactions proceeds via the double-bond opening in cycloolefins and the formation of C—C bonds between adjacent rings (31,32). If the metallocene complexes contain bridged and substituted cyclopentadienyl rings, such as ethylene(hisindenyl)zirconium dichloride, the polymers are stereoregular and have the i j -diisotactic stmcture. [Pg.431]

Phosphoms haUdes and metals or metal salts form addition complexes. Some typical compounds are PCl iSbCl and PCl iAlCl. The trivalent complexes contain metal—phosphoms bonds. The pentavalent complexes involve rearrangements to produce assembles of tetrahedral PX cations and various anions. [Pg.366]

The phosphido complex, Th(PPP)4 [143329-04-0], where PPP = P(CH2CH2P(CH2)2)2) has been prepared and fully characterized (35) and represents the first actinide complex containing exclusively metal—phosphoms bonds. The x-ray stmctural analysis indicated 3-3-electron donor phosphides and 1-1-electron phosphide, suggesting that the complex is formally 22-electron. Similar to the amido system, this phosphido compound is also reactive toward insertion reactions, especially with CO, which undergoes a double insertion (35,36). [Pg.38]

Bimetallic Complexes. There are two types of bimetaUic organometaUic thorium complexes those with, and those without, metal—metal interactions. Examples of species containing metal—metal bonds are complexes with Ee or Ru carbonyl fragments. Cp ThX(CpRu(CO)2), where X = Cl or 1, and Cp7Th(CpM(CO)2), where M = Ee or Ru, have both been prepared by interaction of CP2TI1X2 or Cp ThCl [62156-90-5] respectively, with the anionic metal carbonyl fragment. These complexes contain very polar metal—metal bonds that can be cleaved by alcohols. [Pg.43]

Another class of heteroleptic alkyl complexes contains TT-donating ancillary ligands such as RU[N(Si(CH2)3)2]3 (R = 4)- The hydride... [Pg.335]

Cychc polyarsines undergo a number of reactions with transition metal compounds to form complexes containing both As—As and As—metal bonds. The stmctural chemistry of these complexes has been the subject of a recent review (112). [Pg.337]


See other pages where Complexes Containing is mentioned: [Pg.30]    [Pg.90]    [Pg.276]    [Pg.317]    [Pg.394]    [Pg.2439]    [Pg.2446]    [Pg.84]    [Pg.89]    [Pg.129]    [Pg.211]    [Pg.412]    [Pg.381]    [Pg.32]    [Pg.353]    [Pg.505]    [Pg.470]    [Pg.474]    [Pg.12]    [Pg.178]    [Pg.179]    [Pg.180]    [Pg.181]    [Pg.182]    [Pg.183]    [Pg.184]    [Pg.164]    [Pg.41]    [Pg.43]    [Pg.332]    [Pg.76]    [Pg.157]   


SEARCH



Ammine complexes Complex species that contain ammonia molecules bonded

Anion copper-containing complex

Asymmetric porphyrine-containing complexe

Bisplatinum Complexes Containing Bridging Dicarboxylates

Bond compounds with complexes containing

Carbene complexes sulfur-containing

Cationic rhodium catalysts with complexes containing

Chiral complexes containing

Complex Formation of Aromatic Compounds Containing an Hetero Ring

Complex Phosphates and Space-Containing Structures

Complex formation container molecules

Complex ions, structures containing

Complexes Containing Acyclic Alkenes

Complexes Containing Alkynes

Complexes Containing Allyls or Monoalkenes

Complexes Containing Aminoalcoholate Ion

Complexes Containing Ancillary Hydride Ligands

Complexes Containing Bridging PF2 Ligands

Complexes Containing Cyclic Conjugated Alkenes

Complexes Containing Metals Other Than Cobalt

Complexes Containing Optically Active Tartaric Acid

Complexes Containing Redox-active Ligands

Complexes Containing a -Donor Ligands

Complexes Containing an M-C Bond in Aqueous Catalysis

Complexes Containing at Least Two Classical Functionalities

Complexes containing 1,8-naphthyridines

Complexes containing CuOaCu Bridges

Complexes containing a naked carbon atom

Complexes containing chloride, fluorescence

Complexes containing coordinated halocarbons

Complexes containing five metal ions

Complexes containing four metal ions

Complexes containing naked dicarbon ligands

Complexes containing nitrogen ligands

Complexes containing nitrosyl or thionitrosyl groups

Complexes containing nitrosyl or thionitrosyl ligands

Complexes containing phosphine ligands

Complexes containing three metal atoms

Complexes not containing multiply bonded

Complexes not containing multiply bonded ligands

Complexes of Open-Chain Tetradenate Ligands Containing Heavy Donor

Complexes, containing inequivalent

Compounds containing Organic Molecules or Complex Ions

Contain Complex Mixtures of Lipids

Container Molecules Host Systems and Complex Types

Containing Complex Boron Cations

Covalently Linked Systems Containing Metal Complexes

Cross-linking metal-containing complex

Crystals Containing Finite Complexes

Cysteine-Containing Oligopeptide Model Complexes of Iron-Sulfur Proteins

Cysteine-containing oligopeptide model complexes

Donor-Acceptor Complexes of Carbazole-Containing Polymers

Electrosynthesis of complexes containing weakly acidic anions

Enzyme complexes phosphorus-containing compounds

Enzyme-containing complexes

Exchange Reactions in Complexes Containing CHT

Factors affecting the stabilities of complexes containing only monodentate ligands

Ferrocenyl-containing Complexes

Fluorine complexes containing

Gaseous Chloride Complexes Containing

Gaseous Chloride Complexes Containing Halogen Bridges

Gold-containing complexes

Graft polymerization metal-containing complexes

Guest complexes sulfur-containing

Halogen containing complexes

Heteroatom-containing pentadienyl complexes

Heterometallic Complexes Containing Lanthanides

Hexamethylbenzene)ruthenium Complexes Containing Hydride and ortho-Metallated Triphenylphosphine

Hvbrid O/N/S-Containing Complexes

Iodine-containing charge transfer complexes

Ionic Molecules Containing Complex Ions

Iridium complexes containing

Iridium ligand-containing complex

Iron tetracarbonyl complexes containing

Lanthanide Containing Complexes

Ligand complexes containing monodentate

Lithium-containing crown ether complexes

Magnetic Relaxation in Lanthanide Containing Complexes

Manganese complexes sulfur containing

Metal 1:1 Chromium Complexes Containing

Metal Complexes with Boron-Containing Hosts

Metal compounds with complexes containing

Metal-Containing Enzyme-Mediating Complexes

Methane complexes containing

More Complex Molecules Contain Polar Bonds and Still Be Nonpolar

NHC-containing metal complexes

Nickel complexes sulfur-containing

Nickel-Containing Cyclic Amide Complexes

Niobium-containing metallasilsesquioxane complex

Nitrogen-containing complexes

Nitrogen-containing complexes transition metal

Olefin complexes containing

Olefin complexes containing prochiral

Organochromium Complexes with Nitrogen-Containing Ligands for Ethylene Polymerization

Organometallic complexes containing

Osmium ligand-containing complex

Other Complexes Possibly Containing M—H—Si Three-Center Bonds

Other Metal Complexes of Tertiary Phosphines and Arsines Containing one Olefinic Group

Palladium Complexes Containing Metal Ligands

Palladium complexes containing

Palladium complexes containing ligands

Phosphine complexes containing

Phosphorus-containing compounds complexes with

Photonic Wires Containing Metal Complexes

Platinum complexes containing

Platinum complexes nitrate containing

Polyamine Containing Complexes

Polymeric Complexes containing Bridging O-Donor Ligands

Polymeric Complexes containing Bridging Oxygen Atoms

Polymers Containing Arene Complexes

Polymers Containing Complexed 5-Membered Rings

Polymers Containing Cyclobutadiene Complexes

Polymers Containing Metal Carbonyl Complexes

Polymers Containing Metal Complexes

Polymers containing chiral complexes

Polymers with Complex Structures Containing Thiophene Systems

Porphyrin-containing complexes

Potassium-containing crown ether complexes

Pseudobases of Metal Complexes Containing Heterocyclic Ligands

Pyrazine-containing complexes

Pyrazole complexes containing

Rare earth complexes containing

Reactions of Complexes Containing Methylene Bridges

Reductive polymerization vinyl-containing complex

Rhodium complexes sulfur-containing

Rhodium/1) complexes containing

Ruthenium and Osmium Complexes Containing Multiple Bonds to Heteroatoms

Salicylimine Nickel Complexes Containing Peripheral N-Heteroaromatic Substituents

Shallow Level Complexes Containing Hydrogen

Special Topic Complex Nitrogen-Containing Biomolecules—Alkaloids

Structure of Metal Complexes Containing Arenediazonium Ions as Ligands

Studies of Complexes Containing Ammonia and Other Ligands

Sulfoxide complexes containing chiral

Sulphur-containing Donor Complexes

Sulphur-containing complexes

Sulphur-containing complexes cobalt

Sulphur-containing complexes manganese

Sulphur-containing complexes molybdenum

Synthesis of Carbohydrate Containing Complex Natural Compounds

Synthesis of Complexes Containing Terminal Aryl Ligands

Synthesis of Gold-Containing Mixed-Metal Cluster Complexes

Synthesis of Metal Complexes Containing Chelated Allyl Ligands

Synthesis of complexes containing classically noncoordinating anions as ligands

Tetracyano Complexes Containing Oxo or Nitrido Ligands

Tetracyano complexes, containing oxo

Tetrazole Ring-Containing Complexes

The Chemistry of Complexes Containing W. R. McWhinnie and J. D. Miller

The Chemistry.of Complexes Containing

The Chemistry.of Complexes Containing 2,2 -Bipyridyl, 1,10-Phenanthroline

Transition Metal Complexes Containing

Transition Metal Complexes Containing Anionic or Cationic Ligands

Transition Metal Complexes Containing Bidentate Phosphine Ligands

Transition Metal Complexes Containing W. Levason and C. A. McAuliffe

Transition metal complexes containing all-carbon ligands

Transition metal complexes, polymers containing

Transition metal complexes, trifluoromethyl-containing

Transition-metal ions complexed, dendrimers containing

Triosmium complexes from sulfur-containing heterocycles

Two complexes containing dative and covalent bond distances between identical atom pairs

Vinyl-containing complex, reductive

© 2024 chempedia.info