SEARCH · Search NASA

Results for “CuCN”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

SourceResearch connectionFrom yearThrough year

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

2 records

All sources NASA NTRS DOE OSTI

DOE OSTI2020

Materials Data on CuCN by Materials Project

CuCN crystallizes in the trigonal R3m space group. The structure is one-dimensional and consists of three CuCN ribbons oriented in the (0, 0, 1) direction. Cu1+ is bonded in a linear geometry to one C2+ and one N3- atom. The Cu–C bond length is 1.82 Å. The Cu–N bond length is 1.82 Å. C2+ is bonded in a linear geometry to one Cu1+ and one N3- atom. The C–N bond length is 1.17 Å. N3- is bonded in a linear geometry to one Cu1+ and one C2+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2025

Giant Negative Linear Compressibility in Orthorhombic Copper Cyanide

Most reported negative linear compressibility (NLC) materials exhibit either a small NLC over a large pressure range or a high NLC over a very small pressure range. Here, we report the remarkable discovery of giant NLC in the low-temperature form of CuCN (LT-CuCN) over an unusually large pressure range. High- pressure XRD studies on LT-CuCN observed the NLC of –20.5 TPa –1 along the a axis at zero pressure, and the ambient orthorhombic phase remained stable up to 9.8 GPa. Pressure- and temperature-dependent Raman studies identified the phonon vibrations responsible for NLC and negative thermal expansion (NTE).

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗