A5014983009- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Crystallography and molecular interactions
- Organoboron and organosilicon chemistry
- Coordination Chemistry and Organometallics
- Synthesis and characterization of novel inorganic/organometallic compounds
- Catalytic Cross-Coupling Reactions
- Organometallic Complex Synthesis and Catalysis
- Crystal structures of chemical compounds
- Asymmetric Synthesis and Catalysis
- Organometallic Compounds Synthesis and Characterization
- Chemical Synthesis and Analysis
- Luminescence and Fluorescent Materials
- Boron Compounds in Chemistry
- Chemical Synthesis and Reactions
- Inorganic and Organometallic Chemistry
- Chemical Thermodynamics and Molecular Structure
- Synthesis and Reactivity of Heterocycles
- Silicone and Siloxane Chemistry
- Radical Photochemical Reactions
- Metal-Organic Frameworks: Synthesis and Applications
- Phase Equilibria and Thermodynamics
- Fluorine in Organic Chemistry
- Organic Light-Emitting Diodes Research
- Inorganic Fluorides and Related Compounds
Warsaw University of Technology
2009-2018
University of Warsaw
1999-2018
Faculty (United Kingdom)
2014-2018
Institute of Molecular Science and Technologies
2011
Institute of Physical Chemistry
2000
Polish Academy of Sciences
2000
University of Kentucky
1991-1992
Max-Planck-Institut für Kohlenforschung
1986-1989
Max Planck Society
1989
Institute of Organic Chemistry
1976-1983
Ten bis(boranils) differently substituted at the boron atom and iminophenyl groups were synthesized from 1,5-dihydroxynaphthalene-2,6-dicarboxaldehyde using a simple one-pot protocol. Their photophysical properties can be easily tuned in wide range by variation of substituents. absorption emission spectral bands are significantly red-shifted (λmax = 495-590 nm, λem 533-683 nm) when compared with boranils, whereas fluorescence quantum yields strongly improved to reach 83%. The attachment...
The results of X-ray crystallographic and computational studies a series fluorinated 1,4-phenylenediboronic acids (i.e., fluoro-1,4-phenylenediboronic acid, 2,6-difluoro-1,4-phenylenediboronic 2,3-difluoro-1,4-phenylenediboronic 2,5-difluoro-1,4-phenylenediboronic tetrafluoro-1,4-phenylenediboronic acid) are reported. effect fluorine substitution on crystal organization in the presence strong directional hydrogen bonds was studied. Comparison with two previously reported forms unsubstituted...
An improved approach to luminescent diphenylborinic complexes with functionalized salicydeneaniline ligands was developed. A strong effect of structural modifications on their stability and optical properties established.
The metalation of selected oligobromobenzenes with lithium diisopropylamide (LDA) was investigated. 1,3-Dibromo-substituted benzenes were metalated without special precautions since the resultant 2,6-dibromophenyllithium intermediates are relatively stable under reaction conditions: corresponding benzaldehydes obtained in good or moderate yields after subsequent quench N,N-dimethylformamide (DMF). Aryllithium compounds derived from 1,4- and 1,2-dibromobenzene much less stable, but they could...
Functionalized 2-formylphenylboronic acids undergo an unprecedented tautomeric rearrangement in solution to form corresponding 1,3-dihydro-1,3-dihydroxybenzo[c][2,1]oxaboroles. X-Ray analyses of selected examples revealed diverse solid-state molecular structures from a planar open with hydrogen-bonded carbonyl group (X = 3-F) through twisted conformer showing weak carbonyl–boron interaction 3,5-Br2) cyclic oxaborole derivative 3-Br). Variable-temperature 1H NMR spectroscopy was used...
This review covers recent advances in the preparation and diverse chemistry of various types bimetallic reagents derived from organoboranes. 1,1-Bimetallics containing lithium, zinc zirconium were most extensively investigated among metalated alkyl alkenylboranes. Recently, there is a significant progress arylboron derivatives such as lithiated magnesiated arylboronic esters related complexes. All these effectively used intermediates synthesis more elaborated organoboranes functionalized...
A nanotubular crystal network of a small-molecule compound, 1,2-phenylenediboronic acid, constituting hydrogen-bonded organic framework (HOF) architecture is presented. In contrast to the carbon nanotubes, intermolecular connections are based strictly on hydrogen-bonding interactions. Its uniqueness additionally enhanced by existence other two phases characterized more compact structures. Furthermore, experiment and computational analysis show that such channels may host water clusters, as...
The structures of three ortho-alkoxyphenylboronic acids (2-methoxy-, 2-ethoxy-, 2-isobutoxy-), and diortho-alkoxyphenylboronic (2,6-dimethoxy-, 2,6-diethoxy- 2-isobutoxy-6-methoxy) were determined by single crystal X-ray diffraction. study was undertaken with the intention designing a novel boronic acid having monomeric structure, which to date has been an unavailable building block for engineering. This motif can be enhanced involving two hydroxyl groups at boron atom in intramolecular...
The one-pot metalation/disilylation of selected bromobenzenes bearing electron-withdrawing substituents p-, m-, o-XC6H4Br (X = F, Cl, I, CN, CF3) using 2 equiv lithium diisopropylamide (LDA) and chlorotrimethylsilane (TMSCl) was investigated. best results disilylation were obtained for para-substituted bromobenzenes, but the regioselectivity reaction is strongly influenced by ortho-directing power substituent. On contrary, meta-substituted not efficient or even failed in some cases hence...
Abstract A simple general protocol is reported for the synthesis of functionalised 9,10‐dihydroxy‐9,10‐dihydro‐9,10‐diboraanthracenes by treatment appropriate substituted (2‐halophenyl)boronates with t BuLi. The reaction apparently occurs through formation ortho ‐lithiated phenylboronates. These elusive species possess a trivalent Lewis‐acidic boron atom in vicinity strongly nucleophilic lithiated carbon atom. results DFT calculations indicate that Br/Li exchange kinetically favored over...
The diboraanthracene bis(oxyquinolinato) complexes were employed for the construction of efficient green OLEDs.
The synthesis and physicochemical properties of benzosiloxaboroles, the silicon analogues an important class heterocyclic compounds—benzoxaboroles—is presented. They were prepared by halogen–lithium exchange reactions (2-bromophenyl)boronates with n-BuLi followed silylation or boronation (2-lithiophenyl)dimethylsilanes. cyclization resulting 2-(dimethylsilyl)phenylboronates apparently occurs through intramolecular dehydrogenative reaction in presence water. Unlike case for benzosiloxaborole,...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBoron derivatives of 3-ferrocenylpyrazoleKurt Niedenzu, J. Serwatowski, and S. TrofimenkoCite this: Inorg. Chem. 1991, 30, 3, 524–527Publication Date (Print):February 1, 1991Publication History Published online1 May 2002Published inissue 1 February 1991https://pubs.acs.org/doi/10.1021/ic00003a034https://doi.org/10.1021/ic00003a034research-articleACS PublicationsRequest reuse permissionsArticle Views223Altmetric-Citations39LEARN ABOUT THESE...
It is shown that the structural and physicochemical properties of arylboronic azaesters result from key B-N bond. This bond different in typical single/double/triple bonds present other boron-nitrogen compounds. By studying a model example, 6-tert-butyl-2-(3',5'-difluorophenyl)-(N-B)-1,3,6,2-dioxazaborocane, it proved molecule adopts closed form solid state with BN length equal to 1.7646(3) Å. represents longest for an ester reported literature. According results experimental charge density...
Two polymorphic structures of the model arylboronic azaester 6-butyl-2-(4′-bromophenyl)-(N−B)-1,3,6,2-dioxazaborocane [p-BrC6H4BO2(C2H4)2NBu] give different 13C CP/MAS solid-state NMR spectra with carbon chemical shifts systematically shifted to higher frequencies in form I relative II. Molecular geometries both forms are similar; however, molecules have conformations bicyclic moieties. The most spectacular difference between present Hirshfeld surfaces and fingerprint plots. Also, changes...
A one-pot protocol has been developed to obtain a series of luminescent heteroleptic diarylborinic complexes bearing the 2-fluoro-3-pyridyl and another aryl group attached boron atom chelated with simple or functionalized 8-oxyquinolinato ligand. The tetrahedral geometry around in all compounds established by (11)B NMR spectroscopy and/or X-ray diffraction technique. In solution, obtained have emission maxima ranging from 502 525 nm at room temperature. quantum yield significantly depends on...
The conversion of 2,4,6-tris(4′-bromophenyl)-1,3,5-triazine to the respective triboronic acid was successfully accomplished by a simple triple Br/Li exchange followed boronation. Further dehydrative condensation reactions with 2,3,6,7,10,11-hexahydroxytriphenylene or 2,3,6,7-tetrahydroxy-9,10-dilalkylanthracenes (R = Me, Et) resulted in materials featuring good porosity and sorption properties nitrogen uptake exceeding 500 cm3/g (STP) SBET up 1267 m2/g (T 77.2 K). In addition, dehydration...
Several stable dimeric dialkylaluminum boryloxides of the formula [(mu-Mes2BO)AlR2]2 (R = Me (1), Et (2), iBu) have been prepared from dimesitylborinic acid Mes2BOH and trialkylaluminums R3Al. Compound 1 has characterized by X-ray diffraction. These compounds exhibit diverse reactivity toward protonolytic reagents depending on bulkiness these reagents. Treatment with tert-butyl alcohol afforded crystalline species trans-[mu-tBuO)(Mes2BO)AlMe]2 (3), which is first example a mixed system...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTin(II) poly(1-pyrazolyl)boratesM. N. Hansen, Kurt Niedenzu, J. Serwatowska, Serwatowski, and K. R. WoodrumCite this: Inorg. Chem. 1991, 30, 4, 866–868Publication Date (Print):February 1, 1991Publication History Published online1 May 2002Published inissue 1 February 1991https://pubs.acs.org/doi/10.1021/ic00004a053https://doi.org/10.1021/ic00004a053research-articleACS PublicationsRequest reuse permissionsArticle Views150Altmetric-Citations32LEARN...
4 mol Triorganoboroxin (RBO)3 (1) [R = CH3 (1a), C4H5 (1b), C4H9 (1c), C6H5 (1d)] reagieren mit 6 Aluminiumtrihalogenid AlHal3 (2) [Hal Cl (2a), Br (2b)] unter Abspaltung von Dihalogenorganoboran RBHal2 (3) Cl: 3aa (R CH3), 3ba C2H5), 3ca C4H9), 3da C6H5); Hal Br: 3bb C2H5)] in hohen Ausbeuten zu 2 der neuen Verbindungen Zusammensetzung R4Al3B4Hal5O6 (MS-Analysen) 4aa 4ba 4ca 4da 4bb C2H5)]. Die Struktur 4aa, 4ba, und Lösung ermittelte man Hilfe spektroskopischer Daten (IR; 1H-, 11B-, 17O-...