A5034085490- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Metal-Organic Frameworks: Synthesis and Applications
- Luminescence and Fluorescent Materials
- Molecular spectroscopy and chirality
- Supramolecular Chemistry and Complexes
- Crystallography and molecular interactions
- Crystal structures of chemical compounds
- Covalent Organic Framework Applications
- Polyoxometalates: Synthesis and Applications
- Asymmetric Synthesis and Catalysis
- Chemical Synthesis and Reactions
- Coordination Chemistry and Organometallics
- Organic and Molecular Conductors Research
- Synthetic Organic Chemistry Methods
New York University
2021-2025
Single crystal X-ray diffraction (SCXRD) is arguably the most definitive method for molecular structure determination, but it often challenged by compounds that are liquids or oils at room temperature do not form crystals adequate analysis. Our laboratory previously reported a simple, cost-effective, single-step crystallization based on guanidinium organosulfonate (GS) hydrogen bonded frameworks determination of wide range encapsulated guest molecules, including assignment absolute...
During the past three decades, ability of guanidinium arenesulfonate host frameworks to encapsulate a wide range guests has been amply demonstrated, with more than 700 inclusion compounds realized. Herein, we report crystalline based on new aliphatic host, cyclohexanemonosulfonate, which surprisingly exhibits four heretofore unobserved architectures, as described by projection topologies organosulfonate residues above and below hydrogen-bonded sulfonate sheets. The adopt layer motif sheets...
Hydrogen-bonded host frameworks constructed from carefully selected molecular building blocks can exhibit architectures capable of encapsulating a wide range guest molecules, with promising opportunities in key technologies.
Crystalline fibers of the hydrogen-bonded bis(guanidinium)naphthalene-1,5-disulfonate framework containing ethanol guest molecules, (G)2(1,5-NDS)⊃EtOH, twist as they grow when deposited from solution under conditions that favor low nucleation densities and high branching rates. Spherulites comprising helicoidal with a pitch 3.4 ± 0.5 μm display rhythmic concentric variations in interference colors between crossed polarizers. Tightly packed platelets systematically change orientations flat-on...
Encapsulation of liquid guest molecules in hydrogen-bonded frameworks permits analysis their preferred conformations through single crystal X-ray diffraction.
The addition of the highly reactive reagent allylmagnesium halide to α-substituted acyclic chiral ketones proceeded with high stereoselectivity. stereoselectivity cannot be analyzed by conventional stereochemical models because these reactions do not conform requirements those models. Instead, arises from approach nucleophile most accessible diastereofaces lowest-energy conformations ketones. High is expected, and outcome can predicted, conformationally biased that have sterically...