Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Ojars Neilands"'
Autor:
Ojars Neilands, Hiroyuki Yoshida, Jun'ya Tsutsumi, Takahiro Sasamori, Naoki Sato, Inta Muzikante, Norihiro Tokitoh, Shigeki Kato
Publikováno v:
Journal of Molecular Structure. 920:52-60
Crystal structures of pyridinium 1,3-dihydro-1,3-dioxo-2 H -inden-2-ylide (PI) of a zwitterionic molecule and its nitrogen substituted compounds, 4N-PI and 5N-PI, were solved with X-ray diffraction analyses. Whereas PI and 5N-PI showed centrosymmetri
Publikováno v:
Synthesis. 2004:2509-2512
Efficient syntheses, X-ray structures and spectroscopic properties of s-indacene-1,3,5,7(2H,6H)-tetraone (1) and 1,3-dioxo-5,6-indanedicarboxylic acid (2), their precursors and derivatives, are described for the first time.
Autor:
Ojars Neilands
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 355:331-349
Uracil-fused and isocytosine-fused tetrathiafulvalenes (TTF) are compounds easily synthesised from barbituric acid and its derivatives. The compounds can be easily oxidised, they form cation-radical salts and at the same time intermolecular hydrogen
Publikováno v:
Synthetic Communications. 31:971-974
2-Alkylcyclohexane-1,4-diones, key precursors of TCNQ derivatives, have been synthesized by modified Birch reduction of 2,5-dimethoxybenzoic acid by Li and Et2NH in an ultrasonic bath and subsequent alkylation.
Publikováno v:
Materials Science and Engineering: C. :391-394
In the present article we report about the synthesis, quantum chemical model calculations and non-linear optical characterisation of a novel polyurethane based polymer — a bipolar organic compound N -(indan-1,3-dion-2-yl)-4- N ′, N ′-dialkyamin
Publikováno v:
Scopus-Elsevier
Publikováno v:
Tetrahedron Letters. 40:4851-4854
Oxidation of p -hydroxyphenyl indandione affords 2-(cyclohexa-2′,5′-dienylidene) indan-1,3,4′-trione, a new strong electron acceptor that exhibits two reversible one-electron reduction steps in solution.
Autor:
Ojars Neilands, LeonidM. Goldenberg
Publikováno v:
Journal of Electroanalytical Chemistry. 463:212-217
The cyclic voltammetric response of dimethyl-[1-butyl-2,4-dioxo(1H,3H)pyrimido]tetrathiafulvalene 1 is studied in the presence of aminopyridine derivatives. The first oxidation potential of 1 increases with an increase in 2,6-di(N-acetylamino)pyridin
Autor:
Ojars Neilands, Maris Utinans
Publikováno v:
Advanced Materials for Optics and Electronics. 9:19-25
The topic of this paper is bipolar organic compounds containing both charged electron donor and electron acceptor groups interconnected by various kinds of bridges (–D–X–A+). Such betaines are subject to photoinduced intramolecular electron tra
Publikováno v:
Scopus-Elsevier
The solvatochromic shifts of the two isomeric title betaines 4 and 5, built up from the unsubstituted pyridinio acceptor and phenoxide donor fragments, were recorded in twelve solvents and the data compared with results from semi-empirical (AM1) and