A high-resolution projection and imaging system for ultracold atoms is implemented using a compound silicon and glass atom chip. The atom chip is metalized to enable magnetic trapping while glass regions enable high numerical aperture optical access to atoms residing in the magnetic trap about 100 µm below the chip surface. The atom chip serves as a wall of the vacuum system, which enables the use of commercial microscope components for projection and imaging. Holographically generated light patterns are used to optically slice a cigar-shaped magnetic trap into separate regions; this has been used to simultaneously generate up to four Bose-condensates. Using fluorescence techniques we have demonstrated in-trap imaging resolution down to 2.5 µm.

Carbonyl diisothiocyanate (1) and oxalyl diisothiocyanate (2) were synthesized by reactions of phosgene and oxalyl chloride with ammonium thiocyanate, respectively. Their structures were elucidated by single-crystal X-ray diffraction. 1 exhibits weak intermolecular S−O contacts forming a loosely connected network of molecules, whereas 2 exhibits weak intermolecular C carbonyl −O contacts resulting in the formation of layers. Both compounds were further characterized by nuclear magnetic resonance, infrared, and Raman spectroscopy. Quantum-chemical calculations reproduced the experimental structures and enabled the interpretation of the vibrational spectra.

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A novel technique for measuring the relative photoelastic coefficients using Schaefer-Bergmann diffraction is introduced and applied to fused silica and -. The measurements of fused silica agree with the accepted values to within 0.4%, and the - measurements are verified with results presented in this paper from the established Dixon method.

Reactions between carbonyl diisocyanate or isothiocyanate and hydrogen halide gases as stereotypical nucleophiles show two different reaction pathways. The diisocyanate adds nucleophiles to form carbamoyl halides, whereas the isothiocyanate undergoes ring closure forming thiadiazines. These reactions indicate the significant influence of the chalcogen atom on the reaction products as well as their stability and characteristics. More information can be found in the Research Article by F. Tambornino and co‐workers (DOI: 10.1002/chem.202203983). Artwork by Janina Ill.