176776-60-6Relevant articles and documents
Chiral anionic binuclear zinc complexes based on diaminocyclohexane ligand and their in vitro antiproliferative studies
Azam, Mohammad,Al-Resayes, Saud I.,Trzesowska-Kruszynska, Agata,Kruszynski, Rafal,Verma, Ambarish,Pati, Uttam K.
, p. 73 - 80 (2014)
Two novel binuclear chiral anionic Zn(II) complexes, [Zn 2LCl3]- (C2H5) 3N+ 1 and [Zn2L(CH3COO) 3]- (C2H5)3N+ 2 counterbalanced by triethyl ammonium cation, have been synthesized from ligand, 2,2′-((1E,1′E)-((1R,2R)-cyclohexane-1,2- diylbis(azanylylidene))bis(methanylylidene))dipheno, H2L. The ligand, H2L and its complexes are characterized by elemental analyses, IR, 1H and 13C NMR, ESI-MS, electronic and thermal studies. Complex 1 has been additionally characterized by single crystal X-ray diffraction studies and confirmed a slightly distorted tetragonal pyramid coordination environment in which both zinc atoms are five coordinated by two imine nitrogen atoms, two oxygen atoms and one chloride ion located at the polyhedron apex. Ligand, H2L and its Zn(II) complexes have been subjected to antiproliferative studies against HCT p53 wild type as well as HCT p53 null cell lines, and the results suggest complexes to be an effective antiproliferative agent against these cancer cell lines in comparison to ligand, H2L. Furthermore, DNA fragmentation studies revealed that Zn(II) complexes induce significant p53 independent apoptosis in cancer cell lines.
Synthesis and spectroscopic study of Schiff bases derived from trans-1,2-diaminocyclohexane. Deuterium isotope effect on 13C chemical shift
Ambroziak,Rozwadowski,Dziembowska,Bieg
, p. 109 - 120 (2002)
The proton transfer in the intramolecular hydrogen bond in a series of Schiff bases derivatives of aromatic orthohydroxyaldehydes and trans-1,2-diaminocyclohexane has been studied by means of IR, UV-Vis, 1H and 13C NMR spectroscopies. The measurement of deuterium isotope effect on 13C chemical shift suggests that the proton transfer equilibria in both salicylidene moieties are not independent. Substitution of H by D in one hydrogen bond shifts the proton transfer equilibrium in one direction in this moiety, while in the opposite direction in the other.
Trans-(±)-N,N′-bis(salicylidene)-1,2-cyclohexanediamine
Liu, Qiancai,Ding, Mengxian,Lin, Yonghua,Xing, Yan
, p. 1671 - 1673 (1997)
The title compound, C20H22N2O2, is C2 symmetric with the two N atoms bonded to salicylidene groups which are trans with respect to the cyclohexane ring.
Multi-wavelength spectrophotometric determination of acidity constants of some salicylaldimine derivatives
Bordbar, Maryam,Faal, Ali Yeganeh,Ahari-Mostafavi, Mohammad Mahdi,Gharagozlou, Mehrnaz,Fazaeli, Razieh
, p. 70 - 77 (2013)
The acidity constants of 9 synthesized derivatives of Schiff base in dimethylformamide/water and ethanol/water (25:75 v/v) at 25 C and an ionic strength of 0.1 M have been determined spectrophotometrically. All of the spectrophotometric data as pure spect
Two Schiff base ligands derived from 1,2-diaminocyclohexane
Cannadine, Jason C.,Corden, Jonathan P.,Errington, William,Moore, Peter,Wallbridge, Malcolm G. H.
, p. 1014 - 1017 (1996)
The crystal structures of the free ligands 2,2′-[(1,2-cyclohexanediyl)bis(nitrilomethylidyne)]bisphenol, C20H22N2O2, (I), and 2,2′-[(1,2-cyclohexanediyl)bis-(nitriloethylidyne)]bisphenol, C22H26
Chiral porous poly(ionic liquid)s: Facile one-pot, one-step synthesis and efficient heterogeneous catalysts for asymmetric epoxidation of olefins
Tian, Yabing,Wang, Jixia,Zhang, Shiguo,Zhang, Yan
, (2022/01/26)
Ionic liquids are potential media/solvents for asymmetric synthesis when combined with chiral catalysts, while most reported catalysts are homogenous, making them difficult to separate from the reaction systems. Herein, chiral porous poly(ionic liquid)s (
Polymerization of Ethylene in the Presence of Titanium(IV), Zirconium(IV), and Vanadium(V) Coordination Compounds with Salen Ligands
Bulychev, B. M.,Gagieva, S. Ch.,Lyadov, A. S.,Takazova, R. U.,Tuskaev, V. A.
, p. 291 - 297 (2020/05/25)
Abstract: Coordination compounds of titanium(IV), zirconium(IV), and vanadium(V) with chiral salen ligands have been obtained and characterized, and their catalytic activity in the polymerization reaction of ethylene has been studied. It has been shown that in the presence of polymethylaluminoxane as a cocatalyst, the activity of the titanium-containing catalyst system reaches 944 kgPE mol(Ti)?1 h?1 and leads to the preparation of ultrahigh-molecular-weight polyethylene.