3449-05-6Relevant articles and documents
Schaeffer, G. W.,Anderson, E. B.
, p. 2143 - 2145 (1949)
Molecular structure and dynamics in the low temperature (orthorhombic) phase of NH3BH3
Cho, Herman,Shaw, Wendy J.,Parvanov, Vencislav,Schenter, Gregory K.,Karkamkar, Abhijeet,Hess, Nancy J.,Mundy, Chris,Kathmann, Shawn,Sears, Jesse,Lipton, Andrew S.,Ellis, Paul D.,Thomas Autrey
, p. 4277 - 4283 (2008)
Variable temperature 2H NMR experiments on the orthorhombic phase of selectively deuterated NH3BH3 spanning the static to fast exchange limits of the borane and amine motions are reported. New values of the electric field gradient (EFG) tensor parameters have been obtained from the static 2H spectra of Vzz = 1.652 (±0.082) × 1021 V/m2 and η = 0.00 ± 0.05 for the borane hydrogens and Vzz = 2.883 (±0.144) × 10 21 V/m2 and η = 0.00 ± 0.05 for the amine hydrogens. The molecular symmetry inferred from the observation of equal EFG tensors for the three borane hydrogens and likewise for the three amine hydrogens is in sharp contrast with the Cs symmetry derived from diffraction studies. The origin of the apparent discrepancy has been investigated using molecular dynamics methods in combination with electronic structure calculations of NMR parameters, bond lengths, and bond angles. The computation of parameters from a statistical ensemble rather than from a single set of atomic Cartesian coordinates gives values that are in close quantitative agreement with the 2H NMR electric field gradient tensor measurements and are more consistent with the molecular symmetry revealed by the NMR spectra.
Carter,J.C. et al.
, p. 3071 - 3073 (1974)
The reaction of diborane with trimethylamine-alane and dimethylaminoalane
Keller, Philip C.
, p. 256 - 258 (1972)
Diborane adds to trimethylamine-alane in toluene or diethyl ether to produce (CH3)3N · Al(BH4)3. The action of excess diborane in toluene establishes an equilibrium competition between aluminum borohydride and d
VanPaasschen, J. M.,Geanangel, R. A.
, p. 879 - 883 (1972)
Nucleus targeting anthraquinone-based copper (II) complexes as the potent PDT agents: Synthesis, photo-physical and theoretical evaluation
Devi, Joshila,Devi, Longjam Reena,Musib, Dulal,Ramu, Vanitha,Raza, Md Kausar,Roy, Mithun
, (2020)
Present work explored the structural aspects of four new anthraquinone-based copper(II)complexes of the general formula [Cu(L1)B] (1, 2) and [Cu(L2)B] (3, 4) where L1 = 2-((2-mercaptophenylimino)methyl)phenol, L2 = 2-((2-mercaptophenylimino)methyl)-4,6-di-tert-butylphenol and B are 1,10-phenanthroline,dipyrido[3,2-d:2′,3′-f]quinoxaline-8,9-napthaquinone, in modulating in vitro photo-dynamic activities. Nucleus targeting complexes have shown remarkable cytotoxicity in visible-light to cancer cells (IC50 ～ 2–11 μM) with reduced dark toxicity (IC50 > 50 μM) unlike other copper (II) complexes. Singlet oxygen generated on photo-sensitization of the complexes was the key cytotoxic species responsible for apoptotic damage of cancer cells. Degree of photo-cytotoxicity of the photo-activated complexes was related to the extent of 1O2 generation which was probed by several photo-physical studies along with TD-DFT calculations. Presence of low-lying, long-lived triplet excited state and hence increased ability to generate 1O2 from 3O2 through type-II photo-process was proposed to explain the degree of photo-cytotoxicity of the complexes. We observed dual photo-sensitization of S-coordination and anthraquinone moiety for the complex 4 leading to remarkable PDT effect to cancer cells with minimal dark toxicity. Overall, our investigations on exploring the structural aspects of copper (II) complexes for PDT were a phenomenal break-through in developing copper-based photo-chemotherapeutics in the clinical arena of cancer therapy.
Real-time evaluation of aluminum borohydride trimethylamine for aluminum chemical vapor deposition
Kang, Sang-Woo,Park, Young-Jae,Kim, Yong-Sung,Shin, Yong-Hyeon,Yun, Ju-Young
, p. H333-H339 (2009)
The chemical species in gas phase and on the surface of aluminum borohydride trimethylamine (ABHTMA) for aluminum chemical vapor deposition as a function of the hot-wall temperature and the chamber pressure were studied using two kinds of Fourier transfor
Synthesis, characterization and electrochemical behavior of some Ni(II), Cu(II), Co(II) and Cd(II) complexes of ONS type tridentate Schiff base ligand
Durmus, Sefa,Atahan, Alparslan,Zengin, Mustafa
, p. 1 - 5 (2011)
Tridentate Schiff base (H2L) ligand was synthesized via condensation of o-hydroxybenzaldehyde and 2-aminothiophenol. The metal complexes were prepared from reaction of the ligand with corresponding metal salts presence of substituted pyridine in two different solvents (MeOH or MeCN). The ligand and metal complexes were then characterized by using FTIR, TGA, 1H NMR and 13C NMR spectroscopies. The FTIR spectra showed that H2L was coordinated to the metal ions in tridentate manner with ONS donor sites of the azomethine N, deprotonated phenolic-OH and phenolic-SH. Furthermore, substituted pyridine was coordinated to the central metal atoms. The thermal behavior of the complexes was investigated by using TGA method and dissociations indicated that substituted pyridine and ligand were leaved from coordination. This coordination of the metal complexes was correlated by 1H NMR and 13C NMR. Finally, electrochemical behavior of the ligand and a Ni(II) complex were investigated.
The lability of a boron-nitrogen bond
Heitsch
, p. 767 - 768 (1964)
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The amine complexes of aluminum hydride. V. Hydrido aluminum borohydride derivatives
Ruff, John K.
, p. 515 - 519 (1963)
A series of compounds H3-xAl(BH4)x·N(CH3) 3 (x = 1, 2, and 3) and H2-xAl(BH4)xN(CH3)2 (x = 1 and 2) were prepared by a metathetical reaction between LiBH4 and the corresponding chloro derivatives. Their properties and reactions with trimethylamine and mercuric chloride are discussed.
Disulfiram as a potent metallo-β-lactamase inhibitor with dual functional mechanisms
Chen, Cheng,Li, Jia-Qi,Sun, Le-Yun,Wu, Lin-Yu,Yang, Ke-Wu
supporting information, p. 2755 - 2758 (2020/03/17)
We report a promising NDM-1 inhibitor, disulfiram, which can covalently bind to NDM-1 by forming an S-S bond with the Cys208 residue. Its copper-containing metabolite in vivo, Cu(DTC)2, also inactivated NDM-1 through oxidizing the Zn(ii) thiolate site of the enzyme, therefore exhibiting dual functional inhibitory potential against B1 and B2 subclass MβLs.
Synthesis and photochromic properties of thiolated N-salicylidene-anilines on silver nanoparticles
Mahmoodi, Nosrat O.,Aghajani, Nafiseh,Ghavidast, Atefeh
, p. 21 - 29 (2018/03/29)
Here, we synthesized the salicylidene-aniline (anil) photochromes with thiol group (thiolated Schiff base) to modify silver nanoparticles (AgNPs) surface and their photochromic properties were described. A photochromic response related to the light induced tautomerization of the anils functionality along with bathochromic shift in the absorption band is observed in AgNPs surfaces. We have also examined that enol→keto photoisomerization rate by UV light for functionalized AgNPs are clearly faster than free anils.
