A5039616548- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Synthesis and characterization of novel inorganic/organometallic compounds
- Organoboron and organosilicon chemistry
- Asymmetric Hydrogenation and Catalysis
- Analytical chemistry methods development
- Boron Compounds in Chemistry
- Chemistry and Chemical Engineering
- Synthetic Organic Chemistry Methods
- Chemical Reactions and Mechanisms
- Coordination Chemistry and Organometallics
- Ionic liquids properties and applications
- Organometallic Complex Synthesis and Catalysis
Goethe University Frankfurt
2018-2024
We report a detailed computational and experimental study of the fixation reductive coupling dinitrogen with low-valent boron compounds. Consistent our mechanistic findings, selectivity toward nitrogen or can be controlled through either steric bulk reaction conditions, allowing for on-demand synthesis chains. The electronic structure intriguing magnetic properties intermediates products borylenes are also elucidated using high-level approaches.
Use of the Si<italic>t</italic>Bu<sub>2</sub>Me group in imino(silyl)disilenes is crucial: The highly stable disilene <bold>2</bold> provides access to versatile reactivity with various small molecules, whereas selective thermal isomerization yields A<sub>2</sub>SiSiB<sub>2</sub> type <bold>9</bold>.
Hydrogenolysis of the chlorosilanes and silyl triflates (triflate = trifluoromethanesulfonate, OTf-) Me3- nSiX1+ n (X Cl, OTf; 0, 1) to hydrosilanes at mild conditions (4 bar H2, room temperature) is reported using low loadings (1 mol %) bifunctional catalyst [Ru(H)2CO( HPNP iPr)] ( iPr HN(CH2CH2P( iPr)2)2). Endergonic chlorosilane hydrogenolysis can be driven by chloride removal, e.g., with NaBArF4 [BArF4- B(C6H3-3,5-(CF3)2)4-]. Alternatively, conversion enables facile NEt3 as base, giving...
Trichlorosilane is the key intermediate for large-scale production of polycrystalline silicon in Siemens and Union Carbide processes. Both processes, however, are highly inefficient, over two thirds trichlorosilane employed converted to unwanted tetrachloride accumulating millions tons per year on a global scale. In this combined experimental theoretical study we report an energetically environmentally benign synthetic protocol selective conversion SiCl4 HSiCl3 using organohydridosilanes as...
Salt metathesis of dinickel(II) complex LNi2Br (1; L is a dinucleating pyrazolate ligand with two β‐diketiminato chelate arms) Na(OCP)∙(dioxane)2.5 yielded LNi2(PCO) (2) P‐bridging phosphaethynolate. Further reaction 2 benzyl isocyanide or an N‐heterocyclic carbene (NHC) triggered decarbonylation and gave LNi2(PCN‐CH2Ph) (3) LNi2P(NHC) (4) cyanophosphide NHC‐phosphinidenide, respectively. Electronic structure analysis indicated μ2‐η2:η1 binding mode the PCO– anion between NiII ions in 2,...