Etanol, 1_propanol ve 2_propanol yapılarının su molekülü ile oluşturdukları dimer kümelerinin teorik incelenmesi

Küçük alkoller olarak bilinen etanol, 1_propanol ve 2_propanol yapıları su molekülleri ile hidrojen bağı oluşturabilmektedirler. Etanol, 1_propanol ve 2_propanol yapılarının hidroksil grupları hem proton alıcı hem de proton verici olarak davranış göstermektedirler. Bu çalışmanın amacı, farklı dimer kümelerinde alkol yapılarının su molekülleri ile etkileşimi sonucu gelişen topolojik ve yapısal özellikleri incelemektir. QUICKSTEP (CP2K) paket programı ile BLYP seviyesinde ve QZV3P temel setinde optimizasyonları yapılmıştır. NCI teorisi ile birlikte iso-yüzeyleri belirlenmiş ve elektron yoğunlukları değişimleri incelenmiştir. Bu çalışma, belirli alkol-su dimer komplekslerinde, Ab initio hesaplamalarında daha zayıf hidrojen bağlarının uygun şekilde dikkate alınması gerektiğini göstermektedir.

Anahtar Kelimeler:

Etanol, Hidrojen bağı, Topolojik, 1_propanol, 2_propanol

Theoretical investigation of the dimer clusters formed by ethanol, 1_propanol and 2_propanol structures with water molecule

Ethanol, 1_propanol and, 2_propanol structures, known as small alcohols, can form hydrogen bonds with water molecules. The hydroxyl groups of the ethanol, 1_propanol and, 2_propanol structures act as both proton acceptors and proton donors. The aim of this study is to examine the topological and structural properties that develop as a result of the interaction of alcohol structures with water molecules in different dimer clusters. Optimizations were made with the QUICKSTEP (CP2K) package program at the BLYP level and the QZV3P basis set. The iso-surfaces and electron densities changes are studied together with NCI theory. This study shows that in certain alcohol-water dimer complexes, weaker hydrogen bonds should be properly taken into account in Ab initio calculations.

Keywords:

Ethanol, Hydrogen bonding, Topological, 1_propanol, 2_propanol,

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