Structure and reactivity of 2,4,6-tricyano-1,3,5-triazine under high-pressure conditions

Abstract

2,4,6-Tricyano-1,3,5-triazine is an attractive precursor for the synthesis of extended layered and nanoporous carbon nitrides.

Scalable High-Pressure Synthesis of sp2–sp3 Carbon Nanoribbon via [4 + 2] Polymerization of 1,3,5-Triethynylbenzene

“…This suggests that the phenyl and ethynyl are not likely to react separately as that in PIP of benzene or acetylene, and another reaction path should be concluded. This is also different from the case in TCT, 17 in which the cyano is proposed to trimerize under 10.5 GPa at room temperature with the aromatic ring unreacted.…”

“…Pressure-induced polymerization (PIP) of aromatics is a robust method to synthesize novel carbon materials. − By compression of benzene to ∼20 GPa at room temperature, ultrathin one-dimensional (1-D) sp 3 carbon nanothreads were obtained, with a stiff diamond-like structure . Introducing functional groups and heteroatoms can modify the reaction process, structure, and properties of the product; hence, a variety of aromatics were investigated, like furan, , pyrrole, thiophene, , pyridine, , aniline, pyrimidine, , triazine, ,, 2,4,6-tricyano-1,3,5-triazine (TCT), benzene–hexafluorobenzene cocrystal, and benzene–acetylene cocrystal . New materials including 1-D N- or O-doped nanothreads, 2-D F-doped graphane, and extended nitrogen-rich amorphous hydrogenated carbon ( a -C:H:N) were thus obtained.…”

2D–2D Heterojunctions of a Covalent Triazine Framework with a Triphenylphosphine-Based Covalent Organic Framework for Efficient Photocatalytic Hydrogen Evolution

“…Among them, as a new class of organic semiconductor materials, covalent triazine frameworks (CTFs) have been recently regarded as a type of promising visible-light-driven photocatalysts. − The π-conjugated cyclic aromatic rings of CTFs are in favor of visible-light absorption, and the π-stacked structure is beneficial for charge transfer. , In general, the synthesis of CTFs with high crystallinity is carried out at a high temperature , or under high pressure for ionic thermal synthesis. The high-temperature reaction may cause the partial carbonization of the structure, and the as-prepared materials are usually in the form of black powders, which limits the photocatalytic application.…”

Polymerization Mechanism of Nitrogen-Containing Heteroaromatic Compound Under High-Pressure and High-Temperature Conditions

“…The reaction threshold temperature of benzene is discontinuously changed with the phase state of the starting monomer, especially between liquid and solid phases . In the case of some aromatic compounds, the onset temperatures of the chemical transformation from solid monomers to polymers decrease or are nearly constant with increasing pressure. ,− The change of the reaction threshold temperature of 1,5-Nap between 0.5 and 1.5 GPa would be related with the phase state of the stating monomer. Further in situ experiments on structure and phase state relation of 1,5-Nap are necessary for understanding the effect of pressure on the reaction temperature.…”