216253-66-6Relevant academic research and scientific papers
The effect of different neutral ligands on photoluminescence and electroluminescence properties of ternary terbium complexes
Xin, Hao,Shi, Mei,Gao, Xi Cun,Huang, Yan Yi,Gong, Ze Liang,Nie, Dao Bo,Cao, Hong,Bian, Zu Qiang,Li, Fu You,Huang, Chun Hui
, p. 10796 - 10800 (2004)
Three terbium complexes Tb(tba-PMP)3(TPPO) (A), Tb(tba-PMP) 3(H2O) (B), and Tb(tba-PMP)3(Phen) (C) (where tba-PMP, TPPO, and Phen stand for ?2-diketone 1-phenyl-3-methyl-4-(tert-butylacetyl)-5-pyrazolone, triphe
Mixed-ligand lanthanide complexes with acylpyrazolones and phosphorus-containing ligands
Belousov,Drozdov,Verteletskii,Prishchenko,Livantsova,Novikova
, p. 278 - 282 (2013/06/27)
The reactions of lanthanum acetylacetonate with various phosphorus-containing pesticides, toxic gases, and products of their hydrolysis are modeled by quantum-chemical methods. In the most cases, the enthalpy of substitution for water by organophosphorus
Inhibitory effect of β-diketones and their metal complexes on TNF-α induced expression of ICAM-1 on human endothelial cells
Caruso, Francesco,Pettinari, Claudio,Marchetti, Fabio,Rossi, Miriam,Opazo, Cristian,Kumar, Sarvesh,Balwani, Sakshi,Ghosh, Balaram
experimental part, p. 6166 - 6172 (2011/02/26)
Recent reports show that the natural β-diketone curcumin displays important biological properties regarding the intercellular adhesion molecule-1 (ICAM-1), which plays a critical role in the immune responses and inflammation. In this study the ICAM-1 inhi
Copper and calcium complexes with the anionic O2-donor 4-tert-butylacetyl-3-methyl-1-phenylpyrazol-5-onato (Q-). Influence of hydrogen-bond interactions on lattice architecture in the crystal structures of [CuQ2(H2O)] and [CaQ2(EtOH)2]
Marchetti, Fabio,Pettinari, Claudio,Cingolani, Augusto,Leonesi, Dante,Drozdov, Andrei,Troyanov, Sergei I.
, p. 3325 - 3333 (2007/10/03)
By interaction of 4-tert-butylacetyl-3-methyl-1-phenylpyrazol-5-one (HQ) with Cu(O2CCH3)2·H2O in EtOH, the derivative [CuQ2(H2O)] 1 has been synthesized. It possesses a square-pyramidal structure with the asymmetric β-diketonate ligands arranged in an "anti" configuration to each other and with a molecule of H2O at the apex of polyhedron. Both protons of H2O are involved in an intermolecular hydrogen-bonding network with pyridinic nitrogen atoms of Q donors belonging to two neighbouring complexes. Compound 1 reacts with substituted phenanthrolines (2,9-Me2Phen with 4,7-Ph2Phen) in Et2O to give [CuQ2(2,9-Me2Phen)] and [CuQ2(4,7-Ph2Phen)] derivatives. During the reaction of 1 with an excess of 2,9-Me2Phen in EtOH reduction of copper(II) to copper(I) was observed with formation of the ionic diamagnetic copper(I) derivative [Cu(2,9-Me2Phen)]Q. Ethylenediamine (en) reacted with 1 affording the ionic complex [Cu(en)3]Q2·2H2O. By interaction of 1 with N-methylimidazole (N-MeIm) the compound [CuQ2(N-MeIm)2] has been isolated. Finally the P-donors triphenylphosphine and tricyclohexylphosphine (PCy3) reduced copper(II) affording the copper(I) derivatives [CuQ(PPh3)2] and [CuQ(PCy3)2]. The reaction between HQ and CaCl2 in basic (KOH) EtOH produced the derivative [CaQ2(EtOH)2]. It contains the calcium atom in an axially distorted octahedral environment with the two β-diketonate ligands in "anti" positions and the EtOH molecules trans to each other. The O-Ca-O axis is bent [172.86(6)°]. The protons of the solvent molecules are involved in a hydrogen-bonding network with the nitrogen atoms of Q donors of other molecular units, and the structure is constituted of infinite chains. The derivatives [CaQ2(ROH)2] have been obtained in alcoholic ROH solvents when R = Me, Et or Pr1, whereas the [CaQ2(H2O)2] complex formed when R = But, HC≡CCH2 or Pr1(But)CH. The interaction between [CaQ2(EtOH)2] and 1,10-phenanthroline afforded the adduct [Ca(Q)2(Phen)2].
