Crystal structures and thermogravimetric analyses of six CuCN network structures with protonated <i>N</i>-alkylethanolamines as guest cations

The structures of six triperiodic CuCN network structures with conjugate acids of four N-alkylethanolamines as guest cations are described, namely, poly[2-hydroxyethan-1-aminium [μ<sub>3</sub>-cyanido-di-μ<sub>2</sub>-cyanido-dicuprate(I)]], {(C<sub>2</sub>H<sub>8</sub>NO)[Cu<sub>2</sub>(CN)<sub>3</sub>]}<sub>n</sub>, 1, poly[bis(2-hydroxy-N-methylethan-1-aminium) [di-μ<sub>3</sub>-cyanido-tri-μ<sub>2</sub>-cyanido-tricuprate(I)] monohydrate], {(C<sub>4</sub>H<sub>12</sub>NO)<sub>2</sub>[Cu<sub>3</sub>(CN)<sub>5</sub>]·H<sub>2</sub>O}<sub>n</sub>, 2, poly[tetrakis[N-(2-hydroxyethyl)ethan-1-aminium] [chloridotetra-μ<sub>3</sub>-cyanido-penta-μ<sub>2</sub>-cyanido-tricuprate(I)]], {(C<sub>4</sub>H<sub>12</sub>NO)<sub>4</sub>[Cu<sub>6</sub>(CN)<sub>9</sub>Cl]}<sub>n</sub>, 3, poly[tetrakis[N-(2-hydroxyethyl)ethan-1-aminium] [penta-μ<sub>3</sub>-cyanido-hepta-μ<sub>2</sub>-cyanido-octacuprate(I)]], {(C<sub>4</sub>H<sub>12</sub>NO)<sub>4</sub>[Cu<sub>8</sub>(CN)<sub>12</sub>]}<sub>n</sub>, 4, poly[2-hydroxy-N,N-diisopropylethan-1-aminium [μ<sub>3</sub>-cyanido-μ<sub>2</sub>-cyanido-dicuprate(I)] monohydrate], {(C<sub>8</sub>H<sub>20</sub>NO)[Cu<sub>3</sub>(CN)<sub>4</sub>]·H<sub>2</sub>O}<sub>n</sub>, 5, and poly[2-hydroxy-N,N-diisopropylethan-1-aminium [μ<sub>3</sub>-cyanido-di-μ<sub>2</sub>-cyanido-dicuprate(I)]], {(C<sub>8</sub>H<sub>20</sub>NO)[Cu<sub>2</sub>(CN)<sub>3</sub>]}<sub>n</sub>, 6. In five of the structures (1-5), the CuCN network includes Cu atoms occurring in pairs, linked by cuprophilic interactions. Analysis with the intent of exploring the `template effect' of the cations on the CuCN network structure indicated five separate CuCN topologies. The two different crystal structures involving cations from N-ethylethanolamine have the same basic topology, whereas the two crystal structures involving cations from N,N-diisopropylethanolamine have different topologies, contrary to what might be expected from a template effect. Thermogravimetric analysis of the compounds usually shows loss of HCN(g) and the free base by 200 °C, with a CuCN(s) residue, but decomposition of one of the structures is more complex.

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Journal
Acta Crystallographica Section C Structural Chemistry
Published
2025-09-24
DOI
https://doi.org/10.1107/s2053229625008113
Primary Topic
Metal-Organic Frameworks: Synthesis and Applications
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article
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article

Crystal structures and thermogravimetric analyses of six CuCN network structures with protonated N-alkylethanolamines as guest cations

Nurul Eisha, Peter W. R. Corfield, Gianni J. Contrera, Daniel J. Garcia et al.
Acta Crystallographica Section C Structural Chemistry
Metal-Organic Frameworks: Synthesis and Applications
article

Crystal structures and thermogravimetric analyses of six CuCN network structures with protonated N-alkylethanolamines as guest cations

Nurul Eisha, Peter W. R. Corfield, Gianni J. Contrera, Daniel J. Garcia, A.R. Carlson, Elali Faisal, Nina R. Gencarelli
article en

Abstract

The structures of six triperiodic CuCN network structures with conjugate acids of four N-alkylethanolamines as guest cations are described, namely, poly[2-hydroxyethan-1-aminium [μ<sub>3</sub>-cyanido-di-μ<sub>2</sub>-cyanido-dicuprate(I)]], {(C<sub>2</sub>H<sub>8</sub>NO)[Cu<sub>2</sub>(CN)<sub>3</sub>]}<sub>n</sub>, 1, poly[bis(2-hydroxy-N-methylethan-1-aminium) [di-μ<sub>3</sub>-cyanido-tri-μ<sub>2</sub>-cyanido-tricuprate(I)] monohydrate], {(C<sub>4</sub>H<sub>12</sub>NO)<sub>2</sub>[Cu<sub>3</sub>(CN)<sub>5</sub>]·H<sub>2</sub>O}<sub>n</sub>, 2, poly[tetrakis[N-(2-hydroxyethyl)ethan-1-aminium] [chloridotetra-μ<sub>3</sub>-cyanido-penta-μ<sub>2</sub>-cyanido-tricuprate(I)]], {(C<sub>4</sub>H<sub>12</sub>NO)<sub>4</sub>[Cu<sub>6</sub>(CN)<sub>9</sub>Cl]}<sub>n</sub>, 3, poly[tetrakis[N-(2-hydroxyethyl)ethan-1-aminium] [penta-μ<sub>3</sub>-cyanido-hepta-μ<sub>2</sub>-cyanido-octacuprate(I)]], {(C<sub>4</sub>H<sub>12</sub>NO)<sub>4</sub>[Cu<sub>8</sub>(CN)<sub>12</sub>]}<sub>n</sub>, 4, poly[2-hydroxy-N,N-diisopropylethan-1-aminium [μ<sub>3</sub>-cyanido-μ<sub>2</sub>-cyanido-dicuprate(I)] monohydrate], {(C<sub>8</sub>H<sub>20</sub>NO)[Cu<sub>3</sub>(CN)<sub>4</sub>]·H<sub>2</sub>O}<sub>n</sub>, 5, and poly[2-hydroxy-N,N-diisopropylethan-1-aminium [μ<sub>3</sub>-cyanido-di-μ<sub>2</sub>-cyanido-dicuprate(I)]], {(C<sub>8</sub>H<sub>20</sub>NO)[Cu<sub>2</sub>(CN)<sub>3</sub>]}<sub>n</sub>, 6. In five of the structures (1-5), the CuCN network includes Cu atoms occurring in pairs, linked by cuprophilic interactions. Analysis with the intent of exploring the `template effect' of the cations on the CuCN network structure indicated five separate CuCN topologies. The two different crystal structures involving cations from N-ethylethanolamine have the same basic topology, whereas the two crystal structures involving cations from N,N-diisopropylethanolamine have different topologies, contrary to what might be expected from a template effect. Thermogravimetric analysis of the compounds usually shows loss of HCN(g) and the free base by 200 °C, with a CuCN(s) residue, but decomposition of one of the structures is more complex.

Acta Crystallographica Section C Structural ChemistryVol. 81(10)
Fordham University (US)
Openalex Percentile: Top 79%
Metal-Organic Frameworks: Synthesis and Applications
DOISourceOpenAlex
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