The asymmetric unit of the title N-heterocyclic carbene compound, C(17)H(22)N(4) (2+)·2PF(6) (-), consists of one N-heterocyclic carbene dication and two hexa-fluoro-phosphate anions. The two imidazole rings are twisted away from but to the same side of the central toluene ring, making dihedral angles of 76.69 (7) and 78.03 (7)° with the central ring. In the crystal, the components are linked b...

We report on the synthesis of N-heterocyclic tetrylenes ligated by NON-donor framework 4,5-bis(2,6-diisopropylphenyl-amino)-2,7-di-tert-butyl-9,9-dimethylxanthene. The molecular structures germylene (3), stannylene (4) and plumbylene (5) where determined X-ray diffraction studies. Furthermore, we present quantum chemical studies ?-donor ?-acceptor properties 3–5. Additionally, reactivity toward...

N-heterocyclic carbene-catalyzed reactions for the formation of aromatic compounds are reviewed. The subdivided into 4 types based on their activation modes. A brief summary achievements and challenges remaining in carbene (NHC)-catalyzed arene construction processes is provided at end this review. An outlook future research direction within field also given our own opinion knowledge trends dev...

Functional modification of PVA or introducing reactive functional groups into the polymer chain has been believed to have basic significance while expanding its application. Phosphorous containing nitrogen heterocyclic compounds have been synthesized. The synthesized compounds were characterized using FTIR, NMR spectral studies. Thermo gravimetric analysis (TGA) display that organophosphorous-N...