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The influence of water molecule coordination onto the water-aromatic interaction. Strong interactions of water coordinating to a metal ion

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2013
Authors
Vojislavljevic, Dubravka Z.
Janjić, Goran
Ninkovic, Dragan B.
Kapor, Agnes
Zarić, Snežana D.
Article (Published version)
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Abstract
The interactions between water molecules (non-coordinating and coordinating) and aromatic rings were studied by analyzing data in the Cambridge Structural Database and by quantum chemical calculations. The results show the influence of water coordination to a metal ion; interactions of coordinating water are stronger. The MP2/def2-QZVP interaction energies of non-coordinating water and neutral aqua complexes [ScCl3(H2O)(3)], [ZnCl2(H2O)(4)], [CdCl2(H2O)(4)], and [ZnCl2(H2O)(2)] with benzene molecule are -3.36, -5.10, -5.43, -6.86, and -5.14 kcal mol(-1), respectively. Interactions of charged aqua complexes [ZnCl(H2O)(5)](+) and [Zn(H2O)(6)](2+) are stronger, -9.69 and -13.96 kcal mol(-1), respectively. The calculations also reveal strong long-range interactions: at the distance of 3.0 angstrom the interaction energies of neutral complexes are in the range of -4.11 to -4.91 kcal mol(-1), while interaction energies of charged complexes are -6.37 and -10.76 kcal mol(-1).
Source:
Crystengcomm, 2013, 15, 11, 2099-2105
Publisher:
  • Royal Soc Chemistry, Cambridge
Projects:
  • Noncovalent interactions of pi-systems and their role in molecular recognition (RS-172065)
  • Alexander von Humboldt Foundation (Germany)

DOI: 10.1039/c2ce25621e

ISSN: 1466-8033

WoS: 000315163800012

Scopus: 2-s2.0-84874132632
[ Google Scholar ]
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11
URI
http://cer.ihtm.bg.ac.rs/handle/123456789/1282
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IHTM

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