543-21-5Relevant articles and documents
From Linear Molecular Chains to Extended Polycyclic Networks: Polymerization of Dicyanoacetylene
Gou, Huiyang,Zhu, Li,Huang, Haw-Tyng,Biswas, Arani,Keefer, Derek W.,Chaloux, Brian L.,Prescher, Clemens,Yang, Liuxiang,Kim, Duck Young,Ward, Matthew D.,Lerach, Jordan,Wang, Shengnan,Oganov, Artem R.,Epshteyn, Albert,Badding, John V.,Strobel, Timothy A.
, p. 6706 - 6718 (2017/08/29)
Dicyanoacetylene (C4N2) is an unusual energetic molecule with alternating triple and single bonds (think miniature, nitrogen-capped carbyne), which represents an interesting starting point for the transformation into extended carbon-nitrogen solids. While pressure-induced polymerization has been documented for a wide variety of related molecular solids, precise mechanistic details of reaction pathways are often poorly understood and the characterization of recovered products is typically incomplete. Here, we study the high-pressure behavior of C4N2 and demonstrate polymerization into a disordered carbon-nitrogen network that is recoverable to ambient conditions. The reaction proceeds via activation of linear molecules into buckled molecular chains, which spontaneously assemble into a polycyclic network that lacks long-range order. The recovered product was characterized using a variety of optical spectroscopies, X-ray methods, and theoretical simulations and is described as a predominately sp2 network comprising "pyrrolic" and "pyridinic" rings with an overall tendency toward a two-dimensional structure. This understanding offers valuable mechanistic insights into design guidelines for next-generation carbon nitride materials with unique structures and compositions.
The infrared and Raman spectrum of dicyanoacetylene. The ν9 fundamental
Winther, F.,Ketelsen, M.,Guarnieri, A.
, p. 65 - 74 (2007/10/02)
The Raman spectrum of liquid dicyanoacetylene, NC-CC-CN, was reinvestigated and ν3 found at 617 cm-1.The Fermi resonance between ν1 and 2ν5 is explained, considering the isotopic species NC-13CC-CN.The high resolution infrared spectrum of the lowest frequency fundamental ν9 has been recorded for the first time, and the rotational constants for several states with v9 /= 9 have been determied.