Dinuclear Nickel(II) and Palladium(II) Complexes in Combination with Different Co-Catalysts as Highly Active Catalysts for the Vinyl/Addition Polymerization of Norbornene
作者:Vasile Lozana、Paul-Gerhard Lassahn、Cungen Zhang、Biao Wu、Christoph Janiak、Gerd Rheinwald、Heinrich Lang
DOI:10.1515/znb-2003-1202
日期:2003.12.1
minium, B(C6F5)3/AlEt3 for the vinyl/addition polymerization of norbornene to reach activities of up to 2.4 · 107 gpolymer/mol(metal)·h (molar ratios metal:AlMAO = 1:100, metal:borane:AlEt3 = 1:9:10). Polymer characterization by GPC gave molar mass distributions of Mw/Mn ≈ 2, thereby indicating a coordination polymerization with a single-site character of the active species.
Tri-color emission and colorimetric recognition of acetate using semicarbazide and thio-semicarbazide derivatives: Experimental and computational studies
作者:Sisir Lohar、Sougata Sinha、Subrata Ghosh、Debasis Das
DOI:10.1016/j.saa.2015.10.018
日期:2016.2
Two new fluorescence probes having semicarbazide (DSC) and thio-semicarbazide (DISC) units have been derived upon reaction with 2-hydroxy-5-methylbenzene-1,3-dialdehyde. Both the probes show excellent selectivity for acetate ion in DMSO medium whereby DISC generates tricolor emission. The association constants of DSC and DISC for acetate are 6.6x10(4) M-1 and 2 x 10(3) M-1 respectively with corresponding detection limits, 1.06x10(-7)M and 2.5x10(-6) M. Density functional theoretical (NFT) studies nicely demonstrate the interaction between the DTSC and acetate ion. (C) 2015 Elsevier B.V. All rights reserved.
Gerbeleu, N. V.; Revenko, M. D.; Zhovmir, F. K., Russian Journal of Inorganic Chemistry, 1986, vol. 31, p. 1162 - 1165
作者:Gerbeleu, N. V.、Revenko, M. D.、Zhovmir, F. K.、Kuyavskaya, B. Ya.
DOI:——
日期:——
Utilization of ultrasonic irradiation as green and effective one-pot protocol to prepare novel series of bis-2-amino-1,3,4-oxa(thia)diazoles and bis-tetrazoles
作者:Wael Abdelgayed Ahmed Arafa、Ahmed Fawzy Abdel-Magied
DOI:10.24820/ark.5550190.p010.197
日期:——
In an effective and straightforward conversion, bis-semicarbazones and bis-thiosemicarbazones are transformed into a diversity of novel substituted bis-2-amino-1,3,4-oxadiazoles and bis-2-amino-1,3 ...