Ethylenediamines/triamines

Complexes of chelating ligands like ethylenediamine (en) and diethylene-triamine (dien) can be made [119] ... 

Other polydentate ligands are polyamines and related ligands. Stability constants of silver(I) complexes with polyamines in dimethyl sulfoxide,419 A-methyl-substituted 4-methyldiethylene-triamines,420 or ethylene- or N- or C-methylated ethylenediamine in aqueous solution have been reported.421 The structure of the silver 1,3-diaminopropane complex, [Ag NH2(CH2)3NH2 ]-C104,422 and complex formation with 1,4-diaminobutane and 1,5-diaminopentane have been reported.423 A dinuclear silver(I) compound with ethylenediamine [(enH)Ag(en)Ag(enH)2]4+ has... 

One type of cationic surfactant was the fatty acid derivatives of polyamines. The properties of the derivatives of fatty acids and ethylenediamine have been described in the literature (7-9). It appeared from these reports that the 2-alkyl-2-imidazolines would not impart sufficient hydrophobicity to soils. However, the analogous series of homologous compounds from the fatty acids and diethylene-triamine (BETA) appeared likely to do so because of their higher molecular weight. 

UDMH is known to be miscible with the following wafer, benzene, triethyl benzene, toluene, kerosene, ethyl alcohol, isobutyl alcohol, n-butyl ether, n-amyl ether, n-hexyl ether, diethyl ether, petroleum ether, petroleum naphtha, n-heptane, n-hexane, n-octane, n-decane, n-dodecane, n-hexadecane, cyclohexane, 1,2-dimethyl cyclohexane, phenyl cyclohexane, n-tetradecane, trichloroethylene, dichloroethylene, perchloroethylene, 1,1,1-trichloroethane, triethyl amine, ethylenediamine, diethylene triamine, acetonitrile, aniline, cumene, tetra-hydronaphthalene, tetraethylene pentamine, ethylene glycol and hydrazine (Ref 4)... 

The influence of two tertiary polyamines on the a-nionic polymerization of isoprene in cyclohexane has been studied. TMEDA (N,N,N, N -tetramethyl-ethylenediamine) and PMDT (pentamethyIdiethylene-triamine) can increase or decrease the propagation rate, depending on the concentration range. The results are discussed on the basis of the nature of the living species. 

The same type of Au- -N interaction between adjacent [Au(CN)4] anions is found in [Cu(dien)][Au(CN)4]2 and [Cu(en)2][Au(CN)4]2 (dien = diethylenetriamine en = ethylenediamine) [48], although in these examples the copper cations act as bridges between neighboring chains generating 2-D sheets, as shown in Figure 5.26. The Au- -N separations, of 3.001 and 3.137 A in the triamine complex and 3.035(8) A in the diamine one are similar to those in other tetracyanoaurate(III) derivatives. Additional weak hydrogen bonds between amino hydrogen and N(cyano) atoms increase the dimensionality of the supramolecular structure. 

Hexacoordinated structures prevail in the case of complexonates of the triamine series [764]. However, a great variety of CN of metals is also observed. Moreover, many coordination modes are observed for the complexones of the triamine series, penta-, hexa-, hepta-, and octa-types with chelate and chelate-bridge function of mono-, di-, tri-, and tetra-deprotonated ligands. As a result, a number of metal-cycles are formed. Thus, maximum dentacity of diethylenetriami-noacetic acid 431 (m = n = p = q = 1), with respect to a metal atom, equals 8 (3N+50), leading to seven metal-cycles (two ethylenediamine and five glycine) being formed [764]. 

Furthermore, MCM-41, MCM-48, and SBA-15 silica materials have been lined/ functionalized with, for example, alkyl,104 105 amino or aminopropyl groups,106-120 diamine,121,122 triamine,122,123 ethylenediamine,124 imidazole,120,125-127 triazol,120 A-benzylidenebutan-1 -amine,128 malonamide,129 carboxy(late),108,112,114... 

Starburst polyamidoamine (PAMAM) synthesis [2, 77-81, 83] may begin with either a nucleophilic or an electrophilic core. In the case of nucleophilic cores such as ammonia or amine, step A in Scheme 21 involves exhaustive Michael addition to methyl acrylate. This addition occurs very rapidly and in high yield with essentially complete selectively and no amidation at room temperature. Step B requires addition of this triester intermediate to a large excess of ethylenediamine at room temperature to produce the terminal triamine core cell shown in Fig. 2 and Scheme 21. Repeating the sequence of steps A and B leads, via a hexaester... 

Aminic polyols are low molecular weight adducts of propylene oxide (PO) [and/or ethylene oxide (EO)] made from aliphatic or aromatic polyamines such as ethylenediamine (EDA), diethylene triamine (DETA) [1, 2], ortho-toluene diamine (o-TDA) [3, 4] or diphenylmethanediamine (MDA) [2, 5, 6]. Because these starters are liquid at room temperature (EDA, DETA) or low melting point solids (o-TDA, MDA), they are alkoxylated in the absence of solvents. 

DMSA dimercaptosuccinic acid, EDTA ethylenediaminetetraacetic acid, HMPAO hexamethyl propyl-eneamine oxime, DADS J yM-bis(mercaptoacetyl)ethylenediamine, DADT diaminodithiol, ECD ethylcysteinate dimer, MAG3 mercaptoacetyltriglycine, NOEt Et(OEt)NCS2, DTPA diethylene triamine pentaacetate, MDP methylenediphosphonate, HIDA N-(2,6-dimethylphenylcarbamoylmethyl) iminodiacetic acid, DMPE l,2-bis(dimethylphosphino) ethane, BATO boronic acid technetium oxime, MIBI methoxyisobutyl isocyanide... 

Ethylenediamine tetraacetic acid (EDTA) and diethylene triamine pentaacetate (DTPA) are strong coordinating ligands that are administered to reduce in vivo toxicity of heavy metals. Nevertheless, the coordination behavior of EDTA and DTPA ligands with respect to technetium is rather complicated (Steigman et al. 1975). 

The mechanism of the reaction of (ethylenediamine)(diethylene-triamine)cobalt(II) complexes with O2 to give the mononuclear Co(III) compound has been investigated by using Co It is concluded that the peroxo... 

Preparation of thin films by interfacial polycondensation A typical procedure for preparation of a free-floating interfacial film was as follows. A 1 mM solution of 29 (R = COCl) in chloroform was added to a Petri dish, and an equal volume of 1 mM 29 (R = -OH) in pH 11 carbonate buffer was carefixlly layered on top. After 1-3 h reaction time, the aqueous layer was removed by pipet until the interfacial film breaks and folds over the retreating aqueous buffer solutions. The wet film is then deposited onto an appropriate substrate for subsequent analyses, wetted with 2-propanol, and allowed to air-dry overnight. The same technique provided polyporphyrin films made from 29 (R = COCl) and aliphatic polyamines such as ethylenediamine, diethylene-triamine and poly(ethyleneimine), although significantly shorter reaction times (several minutes) are sufficient and substantially thicker films result. 

Many different aliphatic and aromatic polyamines are available for cross-linking epoxy resins. Some of these are ethylenediamine, diethylene triamine, triethylene tetramine, tetraethylene pentamine, and many others. Among the aromatic polyamine are / -phenylene diamine, /n-phenylene diamine, 4,4 -diaminodiphenyl-methane, and diaminodiphenylsulfone. 

Polyfunctional amines which are commonly used as curing agents for epoxy resins but which are of a rather different kind to those described above are the so-called fatty polyamides. These polymers, which are described in Section 9.3, are of low molecular weight (2000—5000) and are prepared by treating dimerized and trimerized fatty acids with ethylenediamine or diethylene triamine. Fatty polyamides are used to cure epoxy resins where a more flexible product is required, particularly in adhesive and coating applications. 

The effects of ligand structure, such as N-alkylated chain length, degree of N-substitution, and the distance between the two amino groups, that is, methylene-diamine (mn), ethylenediamine (en), trimethylenediamine (tn) and some kinds of polymethylenediamine (bn, hn), were extensively studied. In addition, ethylenediamine derivatives containing ether linkages and polyamines such as triamine and tetramine are also mentioned. Scheme 2 depicts the relationships between the abbreviations and the structure of representative ligands studied in this work. 

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