The yet unknown 2‐amino‐substituted λ3,σ2‐phosphinines are phosphorus‐containing aniline derivatives. Calculations show that the strong interaction of the π‐donating NR2 group with the aromatic system results in a high π‐density at the phosphorus atom. We could now synthesize 2‐N(CH3)2‐functionalized phosphinines, starting from a 3‐N(CH3)2‐substituted 2‐pyrone and (CH3)3Si‐C≡P. Their reaction with CuBr⋅S(CH3)2 affords CuI complexes with the first example of a neutral phosphinine acting as a rare bridging μ2‐P‐4e donor‐ligand between two CuI centers. Our experimental and theoretical investigations show that 2‐aminophosphinines are missing links in the series of known 2‐donor‐functionalized phosphinines.

Synthesis of the first tricyclic bis(carbenes) with facially opposed imidazole-2-ylidenes and two linking phosphorus centres in different oxidation states is presented using a modular, high-yield synthetic route. The formation of homo bimetallic coinage metal(i) complexes provides a first glimpse on their potential use.

Die bisher unbekannten 2‐Amino‐substituierten λ3,σ2‐Phosphinine sind phosphorhaltige Anilinderivate. Theoretische Studien zeigen, dass die starke Wechselwirkung der π‐donierenden NR2‐Gruppe mit dem aromatischen System zu einer erhöhten π‐Dichte am Phosphoratom führt. Ausgehend von einem 3‐N(CH3)2‐substituierten 2‐Pyron und (CH3)3SiC≡P wurden erstmalig 2‐N(CH3)2‐funktionalisierte Phosphinine synthetisiert. Deren Reaktionen mit CuBr⋅S(CH3)2 ergaben CuI‐Komplexverbindungen, in denen erstmalig ein neutrales Phosphinin als seltener μ2‐P‐4e‐Donor‐Ligand durch Verbrückung zweier CuI‐Zentren auftritt. Unsere experimentellen und theoretischen Untersuchungen zeigen, dass 2‐Aminophosphinine die Lücke in der Serie bekannter 2‐Donor‐funktionalisierter Phosphinine schließen.

The present work demonstrates the performance of a von Hámos high-energy-resolution X-ray spectrometer based on a non-conventional conical Si single-crystal analyzer. The analyzer is tested with different primary and secondary X-ray sources as well as a hard X-ray sensitive CCD camera. The spectrometer setup is also characterized with ray-tracing simulations. Both experimental and simulated results affirm that the conical spectrometer can efficiently detect and resolve the two pairs of two elements (Ni and Cu) Kα X-ray emission spectroscopy (XES) peaks simultaneously, requiring a less than 2 cm-wide array on a single position-sensitive detector. The possible applications of this simple yet broad-energy-spectrum crystal spectrometer range from quickly adapting it as another probe for complex experiments at synchrotron beamlines to analyzing X-ray emission from plasma generated by ultrashort laser pulses at modern laser facilities.