14123-48-9Relevant articles and documents
Monomeric or Dimeric Aluminum Complexes as Catalysts for Cycloaddition between CO2 and Epoxides
Kim, So Han,Han, Sang Yeop,Kim, Jeong Hee,Kang, Yi Young,Lee, Junseong,Kim, Youngjo
, p. 2323 - 2329 (2015)
A monomeric aluminum complex containing aliphatic tetradentate ligand L1 (HOCMe2CH2NMeCH2CH2NMeCH2CMe2OH) was synthesized and used as a catalyst for cycloaddition between CO2 and epoxides in the presence of PPNCl as a cocatalyst. To check the effect of ligand L1, coordinated to the aluminum center, on the activity of cycloaddition, the new ligand HOCMe2CH2NMe2, which corresponds to half of L1, was systematically designed to make monomeric or dimeric aluminum complexes. Comparison of the catalytic properties of the aluminum complex containing the tetradentate ligand with those of the two related aluminum complexes containing the bidentate ligand under the same conditions revealed that the first system showed higher activity than the other two for cycloaddition between CO2 and epoxides in the presence of PPNCl, which was the best cocatalyst out of the six compounds nBu4PBr, nBu4NCl, nBu4NBr, nBu4NI, DMAP, and PPNCl. The aluminum complexes 1-3 demonstrate catalytic activity for cycloaddition between CO2 and epoxides in the presence of cocatalysts.
Heteroleptic manganese compounds as potential precursors for manganese based thin films and nanomaterials
Chung, Taek-Mo,Kim, Chang Gyoun,Lee, Ga Yeon,Lee, Sunju,Park, Bo Keun
, p. 29659 - 29667 (2020)
Heteroleptic manganese compounds, [Mn(tmhd)(TMEDA)Cl]2 (1), [Mn(tmhd)(dmamp)]2 (2), Mn2(tmhd)2(edpa)2(μ-THF) (3), [Mn(dmampea)(NEt2)]2 (4), and Mn(dmampea)(iPr-MeAMD) (5), were synthesized and characterized. Compound 5 was a volatile liquid. Structural analysis revealed that 1-4 were dimers. Compounds 1 and 3, 2, and 4 had distorted octahedral, distorted trigonal-bipyramidal, and distorted tetrahedral geometries around the Mn centers, respectively. Based on thermogravimetric analysis, the residues of 2 and 3 were expected to be MnO and Mn3O4, respectively. According to thermogravimetric analysis, 4 showed a higher residual value, whereas 5 exhibited a lower value than those expected for manganese nitrides. This journal is
Synthesis and characterization of Nickel(II) aminoalkoxides: Application to molecular precursors for MOCVD of Ni thin films
Yoo, Seung Ho,Choi, Hana,Kim, Hyo-Suk,Park, Bo Keun,Lee, Sun Sook,An, Ki-Seok,Lee, Young Kuk,Chung, Taek-Mo,Kim, Chang Gyoun
scheme or table, p. 1833 - 1839 (2011/06/25)
Novel single precursors for Ni, Ni(dmamp)2 (1), Ni(deamp) 2 (2), and Ni(emamp)2 (3), were synthesized by the metathesis reaction between [Ni(NH3)6]Cl2 and two equiv. of Na(dmamp), Na(deamp), and Na(emamp), respectively. Complexes 1-3 have been characterized by IR, 1H NMR, and 13C NMR spectroscopies, and microanalytical data, as well as single-crystal X-ray diffraction studies. Through GC/MS analysis of the gaseous species generated by the decomposition of 1, a self-reduction pathway to form metallic Ni was studied. By the metalorganic chemical vapor deposition of 1, metallic Ni hexagonal-phase thin films were obtained at 250 °C and cubic-phase thin films were obtained at 400 °C.