### Abstract

Cooperative effects in two-dimensional cyclic networks containing intermolecular three-centered hydrogen bonding interactions of the type H1 ⋯A⋯ H2 are investigated by means of ab intio molecular orbital and density functional theory calculations. Ring-like clusters consisting of three and up to nine monomers of the cis-cis isomer of carbonic acid H2 CO3 are used as basic models, where each unit acts simultaneously as a double hydrogen-bond donor and double hydrogen-bond acceptor. Cooperative effects based on binding energies are evident for (H2 CO3) n, where n goes from 2 to 9. Thus, the ZPVE-corrected dissociation energy per bifurcated hydrogen bond increases from 11.52 kcalmol in the dimer to 20.42 kcalmol in the nonamer, i.e., a 77% cooperative enhancement. Cooperative effects are also manifested in such indicators as geometries, and vibrational frequencies and intensities. The natural bond orbital analysis method is used to rationalize the results in terms of the substantial charge delocalization taking place in the cyclic clusters. Cooperativity seems close to reaching an asymptotic limit in the largest ring considered, n=9.

Original language | English (US) |
---|---|

Article number | 184325 |

Journal | Journal of Chemical Physics |

Volume | 122 |

Issue number | 18 |

DOIs | |

State | Published - May 8 2005 |

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### ASJC Scopus subject areas

- Physics and Astronomy(all)
- Physical and Theoretical Chemistry

### Cite this

*Journal of Chemical Physics*,

*122*(18), [184325]. https://doi.org/10.1063/1.1895713

**Cooperative effects in two-dimensional ring-like networks of three-center hydrogen bonding interactions.** / Parra, Rub́n D.; Bulusu, Satya; Zeng, Xiao C.

Research output: Contribution to journal › Article

*Journal of Chemical Physics*, vol. 122, no. 18, 184325. https://doi.org/10.1063/1.1895713

}

TY - JOUR

T1 - Cooperative effects in two-dimensional ring-like networks of three-center hydrogen bonding interactions

AU - Parra, Rub́n D.

AU - Bulusu, Satya

AU - Zeng, Xiao C

PY - 2005/5/8

Y1 - 2005/5/8

N2 - Cooperative effects in two-dimensional cyclic networks containing intermolecular three-centered hydrogen bonding interactions of the type H1 ⋯A⋯ H2 are investigated by means of ab intio molecular orbital and density functional theory calculations. Ring-like clusters consisting of three and up to nine monomers of the cis-cis isomer of carbonic acid H2 CO3 are used as basic models, where each unit acts simultaneously as a double hydrogen-bond donor and double hydrogen-bond acceptor. Cooperative effects based on binding energies are evident for (H2 CO3) n, where n goes from 2 to 9. Thus, the ZPVE-corrected dissociation energy per bifurcated hydrogen bond increases from 11.52 kcalmol in the dimer to 20.42 kcalmol in the nonamer, i.e., a 77% cooperative enhancement. Cooperative effects are also manifested in such indicators as geometries, and vibrational frequencies and intensities. The natural bond orbital analysis method is used to rationalize the results in terms of the substantial charge delocalization taking place in the cyclic clusters. Cooperativity seems close to reaching an asymptotic limit in the largest ring considered, n=9.

AB - Cooperative effects in two-dimensional cyclic networks containing intermolecular three-centered hydrogen bonding interactions of the type H1 ⋯A⋯ H2 are investigated by means of ab intio molecular orbital and density functional theory calculations. Ring-like clusters consisting of three and up to nine monomers of the cis-cis isomer of carbonic acid H2 CO3 are used as basic models, where each unit acts simultaneously as a double hydrogen-bond donor and double hydrogen-bond acceptor. Cooperative effects based on binding energies are evident for (H2 CO3) n, where n goes from 2 to 9. Thus, the ZPVE-corrected dissociation energy per bifurcated hydrogen bond increases from 11.52 kcalmol in the dimer to 20.42 kcalmol in the nonamer, i.e., a 77% cooperative enhancement. Cooperative effects are also manifested in such indicators as geometries, and vibrational frequencies and intensities. The natural bond orbital analysis method is used to rationalize the results in terms of the substantial charge delocalization taking place in the cyclic clusters. Cooperativity seems close to reaching an asymptotic limit in the largest ring considered, n=9.

UR - http://www.scopus.com/inward/record.url?scp=18844392545&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=18844392545&partnerID=8YFLogxK

U2 - 10.1063/1.1895713

DO - 10.1063/1.1895713

M3 - Article

VL - 122

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 18

M1 - 184325

ER -