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Study of Aromaticit...
Study of Aromaticity in Phosphazenes
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- Jha, Prakash Chandra (författare)
- KTH,Teoretisk kemi
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Pati, Y. A. (författare)
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Ramasesha, S. (författare)
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(creator_code:org_t)
- Informa UK Limited, 2010
- 2010
- Engelska.
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Ingår i: Atoms, Molecules, and Clusters Structure, Reactivity, and Dynamics. - : Informa UK Limited. ; , s. 409-421
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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visa färre...
Abstract
Ämnesord
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- The denition of aromaticity and aromatic character of conjugated organic and inorganic systems has been of long-standing interest to chemists. Widely different properties such as molecular geometry, stabilization energy, and magnetic properties have been employed in the literature for characterizing aromaticity [1]. Yet there is no single measure for quantifying aromaticity. The general consensus is that aromatic molecules are planar and have equal bond lengths; they have 4n + 2 π electrons and large resonance energies. It is difcult to quantify aromaticity using any of these criteria. However, cyclic delocalization of mobile π electrons results in ring currents that are responsible for anomalous magnetic properties such as magnetic anisotropies, exalted magnetic susceptibilities, and large chemical shifts [2]. These properties appear to afford both a theoretical and an experimental way of quantifying aromaticity.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
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