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On the physical origins of interaction-induced vibrational (hyper)polarizabilities
SYS 0237579 LBL ---naa--22--------450- 005 20240513122027.4 014 $a 000381436500050 $2 CCC 014 $a 000381436500050 $2 WOS CC. SCIE 014 $a 2-s2.0-84981541166 $2 SCOPUS 014 $a 27465257 $2 MEDLINE 014 $a 27465257 $2 PubMed 017 70
$a 10.1039/c6cp02500e $2 DOI 100 $a 20161220 2016 m y slo 03 ba 101 0-
$a eng 102 $a GB 200 1-
$a On the physical origins of interaction-induced vibrational (hyper)polarizabilities $f Robert Zaleśny ... [et al.] 330 $a This paper presents the results of a pioneering exploration of the physical origins of vibrational contributions to the interaction-induced electric properties of molecular complexes. In order to analyze the excess nuclear relaxation (hyper)polarizabilities, a new scheme was proposed which relies on the computationally efficient Bishop-Hasan-Kirtman method for determining the nuclear relaxation contributions to electric properties. The extension presented herein is general and can be used with any interaction-energy partitioning method. As an example, in this study we employed the variational-perturbational interaction-energy decomposition scheme (at the MP2/aug-cc-pVQZ level) and the extended transition state method by employing three exchange-correlation functionals (BLYP, LC-BLYP, and LC-BLYP-dDsC) to study the excess properties of the HCN dimer. It was observed that the first-order electrostatic contribution to the excess nuclear relaxation polarizability cancels with the negative exchange repulsion term out to a large extent, resulting in a positive value of Delta alpha(nr) due to the contributions from the delocalization and the dispersion terms. In the case of the excess nuclear relaxation first hyperpolarizability, the pattern of interaction contributions is very similar to that for Delta alpha(nr), both in terms of their sign as well as relative magnitude. Finally, our results show that the LC-BLYP and LC-BLYP-dDsC functionals, which yield smaller values of the orbital relaxation term than BLYP, are more successful in predicting excess properties. 463 -1
$1 001 umb_un_cat*0295253 $1 011 $a 1463-9076 $1 011 $a 1463-9084 $1 200 1 $a Physical Chemistry Chemical Physics $v Vol. 18, no. 32 (2016), pp. 22467-22477 $1 210 $a Cambridge $c The Royal Society of Chemistry (RSC) $d 2016 606 0-
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Number of the records: 1