Tetrakis ethylenediamine

Tetrakis(ethylenediamine)-/n-peroxo-/i-amido-dicobalt(III, IV) ion or bis(ethylenedia-mine) cobal t( III )-/n-peroxo-/i-amidobis (ethylenediamine)cobalt(IV) ion... 

L. J. Boucher and J. C. Bailar, Jr., The Preparation and Properties of Some Complexes of the Type ) -Diketonatobis-(ethylenediamine)-cobalt(III) Iodide and Bis-( -diketonato)-tetrakis-(ethylenediamine)dicobaIt(III) Iodide, Inorg. Chem. 3 589 (1964). 

EDA and other alkylene amines react readily with acrylonitrile or acrylate esters. EDA reacts with acrylonitrile to give tetrakis(2-cyanoeth5i)-ethylenediamine which is reduced over Raney nickel to give tetralds(3-anainoprop5i)-ethyl-enediainine (52). With methyl acrylate and EDA under controlled conditions, a new class of starburst dendritic macromolecules forms (53,54). 

The complexers maybe tartrate, ethylenediaminetetraacetic acid (EDTA), tetrakis(2-hydroxypropyl)ethylenediamine, nittilotriacetic acid (NTA), or some other strong chelate. Numerous proprietary stabilizers, eg, sulfur compounds, nitrogen heterocycles, and cyanides (qv) are used (2,44). These formulated baths differ ia deposition rate, ease of waste treatment, stabiHty, bath life, copper color and ductiHty, operating temperature, and component concentration. Most have been developed for specific processes all deposit nearly pure copper metal. 

Abbreviations edta = ethylenediamine-tetraacetic acid, bipy terpyridine, TPMPyP = tetrakis(4-N-methylpyridyl)porphyrin... 

To indicate the number of ligands of a particular type, the prefixes di, tri, tetra, and so on are used. If the name of the ligand contains one of these prefixes, the number of ligands is indicated by using the prefixes bis, tris, tetrakis, and so forth. For example, two ethylenediamine ligands would be indicated as bis(ethylenediamine) rather than diethylenediamine. 

Abbreviations DHG = Ar,Ar-di(2-hydroxyethyl)glycine NTA = nitrilotriacetic acid EDTA = ethylenediaminetetraacetic acid tiron = pyrocatechol-3,5-disulfonic acid BAL = 2,3-dimercaptopropanol unithiol = sodium 2,3-dimercaptopropane sulfonate tren — triaminatriethylamine penten = tetrakis(aminoethyl)ethylenediamine bipy = 2,2 -bipyridyl phen = 1,10-phenanthroline. 

NADH Nicotineamide adenine dinucleotide reduced form. EDTA Ethylenediamine tetraacetic acid. RSH Mercaptoethanol. ZnTPP Zinc tetraphenylporphyrin. ZnTMPyP Zinc tetrakis(4-methylpyridyl)porphyrin. ZnTPPS Zinc tetraphenylporphyrin tetrasulfomate. 

If the name of a ligand itself contains a Greek prefix—for example, ethylenediamine—put the ligand name in parentheses and use one of the following alternative prefixes to specify the number of ligands bis- (2), tris- (3), tetrakis- (4), and so forth. Thus, the name of [Co(en)3]Cl3 is trisfethylenedi-amine)cobalt(III) chloride. 

M,N -Dialkyl, Af,AT-diaryl-dipicolinamides [261-263] 2,6-bis( 1 -Aryl-1 -H-tetrazol-5-yl)pyridines (ATP, [265]) Hydrophobic derivatives of N,N A AT-tetrakis (2-methylpyridyl ethylenediamine (TPEN [266])... 

Matsumura, T., Takeshita, K. 2006. Extraction behavior of Am(EH) from Eu(III) with hydrophobic derivatives of N,N,N ,N -tetrakis(2-methylpyridyl)ethylenediamine (TPEN). Journal of Nuclear Science and Technology 43(7) 824—827. 

Quadrol 0 150 HB Chlor 214 571 357 472 489 A/,A/,A/, A/ -Tetrakis (2-hydroxy-propyl) ethylenediamine for alcohols, aldehydes, ketones, amino acids, essential oils... 

Anion sensing using visible-emitting lanthanide probes has proven successful (Tsukube et al., 2006) and this work is now being extended to Ybm probes, particularly for the detection of thiocyanate. The latter is the principal metabolite of cyanide anion and exists in human serum, saliva, and urine. The luminescent probe is a complex of hexadentate tetrakis(2-pyridylmethyl)ethylenediamine (tpen, see fig. 119) which bears two water molecules, [Yb(tpen)(H20)2](0tf)3. In absence of anion coordination, the 980-nm luminescence is quenched, but the replacement of the water molecules with thiocyanate or other anions such as acetate, nitrate or halogenides removes the quenching, which makes the complex a responsive probe. The largest effect (a six-fold increase in luminescence) is obtained for thiocyanate, followed by acetate and nitrate (3.5-fold) and chloride (two-fold). 

Numerical Prefixes to Indicate Number of Ligands The number of each kind of ligands are specified by the prefixes di, tri, tetra, etc. If the ligand is complex, such as ethylenediamine (en), ethylenediaminetetra-acetato (edta), etc. and is repeated two, three or four times then the words bis, tris, tetrakis, etc., are used followed by the name of the ligand in parentheses. It is illustrated by the examples below ... 

With ethylenediamine complexes of the formula Ln(en)3X3 and Ln(en)4X3, where X = C1 , Br , NO, CIOJ have been characterized. IR data indicate that the tris and tetrakis complexes of the fighter lanthanides La-Sm, contain both ionic and coordinated nitrate groups. By contrast tetrakis complexes of heavier lanthanides, Eu-Yb contain ionic nitrate. This is possibly due to steric factors resulting from decreasing cationic radius that force the nitrate out of the coordination sphere of the lanthanides. A coordination number of 8 for tris complexes and a number of 9 for fighter lanthanide tetrakis complexes appears reasonable [234]. The thermodynamic parameters obtained show enthalpy stabilization for... 

A mixture of 6-bromo-4-(tri luoromethanesulfonyloxy)-5,8-dimethoxy-quinoline (1.35 g, 3.25 mmol), trimethyl[2-[(l,l-dimethylethoxycarbonyl)-amino]phenyl]tin (1.68 g, 4.70 mmol), lithium chloride (330 mg, 7.80 mmol), copper(I) bromide (25 mg, 0.17 mmol), and tetrakis(triphenylphosphine)palla-dium (0) (180 mg, 0.16 mmol) in dioxane (60 cm ) was heated at 90 °C for 60 h. After being cooled to rt, the mixture was partitioned between EtOAc and a 5 % aqueous ethylenediamine solution to remove any copper species, completely. After the usual work up, the residue was chromatographed (1.5 1 hexanes -EtOAc) to yield the title compound as a white solid (952 mg, 64%, several other fractions contained the title compound contaminated with 6-bromo-5,8-di-methoxy-4-methylquinoline) mp 166-168 °C. 

Tosylphenylalanylchloromethyl ketone Temperature-programmed desorption A A -tetrakis-(2-pyridyl-methyl)ethylenediamine Triphosphopyridine dinucleotide (now NADP)... 

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