Search NASA⌕ Search

DOE OSTI · 1284309

Materials Data on Cu2H4C4N3O by Materials Project

Abstract

CuH2(C2N)2Cu3C3N4H5OCHO crystallizes in the monoclinic P2_1 space group. The structure is one-dimensional and consists of two methanol molecules; two Cu3C3N4H5O clusters; and one CuH2(C2N)2 ribbon oriented in the (0, 1, 0) direction. In each Cu3C3N4H5O cluster, there are three inequivalent Cu+1.50+ sites. In the first Cu+1.50+ site, Cu+1.50+ is bonded in a distorted single-bond geometry to one H1+ atom. The Cu–H bond length is 1.65 Å. In the second Cu+1.50+ site, Cu+1.50+ is bonded in a distorted trigonal non-coplanar geometry to two N3- and one H1+ atom. There are one shorter (2.06 Å) and one longer (2.11 Å) Cu–N bond lengths. The Cu–H bond length is 1.66 Å. In the third Cu+1.50+ site, Cu+1.50+ is bonded in a 2-coordinate geometry to three N3- atoms. There are a spread of Cu–N bond distances ranging from 1.91–2.26 Å. There are three inequivalent C1+ sites. In the first C1+ site, C1+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.22 Å. In the second C1+ site, C1+ is bonded in a trigonal non-coplanar geometry to one N3- and two H1+ atoms. The C–N bond length is 1.43 Å. There is one shorter (1.11 Å) and one longer (1.12 Å) C–H bond length. In the third C1+ site, C1+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.19 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a distorted trigonal planar geometry to one Cu+1.50+, one C1+, and one H1+ atom. The N–H bond length is 1.02 Å. In the second N3- site, N3- is bonded in a distorted water-like geometry to one Cu+1.50+ and one C1+ atom. In the third N3- site, N3- is bonded in a distorted trigonal planar geometry to two Cu+1.50+ and one O2- atom. The N–O bond length is 1.22 Å. In the fourth N3- site, N3- is bonded in a 2-coordinate geometry to one Cu+1.50+, one C1+, and one H1+ atom. The N–H bond length is 1.03 Å. There are five inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C1+ atom. In the second H1+ site, H1+ is bonded in a water-like geometry to two Cu+1.50+ atoms. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one C1+ atom. O2- is bonded in a single-bond geometry to one N3- atom. In the CuH2(C2N)2 ribbon, Cu+1.50+ is bonded in a 3-coordinate geometry to one N3- and two H1+ atoms. The Cu–N bond length is 2.01 Å. There is one shorter (1.89 Å) and one longer (2.00 Å) Cu–H bond length. There are four inequivalent C1+ sites. In the first C1+ site, C1+ is bonded in a distorted bent 120 degrees geometry to one N3- and one H1+ atom. The C–N bond length is 1.33 Å. The C–H bond length is 1.14 Å. In the second C1+ site, C1+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.37 Å. In the third C1+ site, C1+ is bonded in a water-like geometry to one N3- and one H1+ atom. The C–N bond length is 1.37 Å. The C–H bond length is 1.12 Å. In the fourth C1+ site, C1+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.18 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a linear geometry to two C1+ atoms. In the second N3- site, N3- is bonded in a trigonal planar geometry to one Cu+1.50+ and two C1+ atoms. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted single-bond geometry to one Cu+1.50+ and one C1+ atom. In the second H1+ site, H1+ is bonded in a distorted single-bond geometry to one Cu+1.50+ and one C1+ atom.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-29. Materials Data on Cu2H4C4N3O by Materials Project. https://doi.org/10.17188/1284309

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related reports

Cyclic moisture reactivation of calcium sorbents for long duration thermochemical energy storage

The transition to a flexible and reliable energy infrastructure, using electro-thermal energy generation technologies such as geothermal, concentrated solar power, and nuclear, usually demands simultaneous advancement of thermal energy storage (TES) to support on-demand electricity generation and industrial applications while mitigating the inherent intermittency of renewable energy sources and power outages from direct energy generation. Among TES technologies, thermochemical energy storage (TCES) based on calcium looping emerges as a compelling high-power energy storage candidate due to its high reaction enthalpy, compatibility with elevated operating temperatures, and abundance of low-cost materials. However, the long-term durability of calcium-based sorbents for TCES is hindered by surface sintering and particle aggregation, leading to performance degradation over repeated thermal cycles. This study explores a moisture hydration-based strategy to regenerate a degraded calcium sorbent and mitigate performance degradation for long duration TCES. The addition of moisture transforms calcium oxide into calcium hydroxide and produces intercalation water layers, associated with a regenerated surface area and reduced calcium oxide crystallite size. Both these effects are beneficial in restoring the sorbents' reactivity for carbonization. Additionally, an optimized hydration-assisted reactivation protocol balances the recovered energy storage capacity with heating penalty required for moisture removal from hydrated samples, resulting in an enhanced energy storage capacity up to 176% compared to benchmark sorbents that undergo cycling without reactivation after 60 cycles. In conclusion, these results highlight the potential of hydration-assisted reactivation to enhance the long-term performance of TCES, providing an effective pathway to advancing electro-thermal storage technologies.

36 MATERIALS SCIENCE↗