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Ahsin A, Ejaz I, Sarfaraz S, Ayub K, Ma H. Polaron Formation in Conducting Polymers: A Novel Approach to Designing Materials with a Larger NLO Response. ACS OMEGA 2024; 9:14043-14053. [PMID: 38559943 PMCID: PMC10976349 DOI: 10.1021/acsomega.3c09468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/25/2024] [Accepted: 03/07/2024] [Indexed: 04/04/2024]
Abstract
Substantial efforts have been made to design and investigate new approaches for high-performance nonlinear optical (NLO) materials. Herein, we report polaron formation in conducting polymers as a new approach to designing materials with a large NLO response. A comparative study of polypyrrole and polypyrrole-based polaron (nPy+ where n = 1, 3, 5, 7, and 9) is carried out for optoelectronic and NLO properties. The studied polarons (PPy+) show excellent electronic properties and have reduced ionization potential (IP) as compared to neutral PPy, and a monotonic decrease is observed with increased chain lengths (1Py to 9Py). Interesting trends of global reactivity descriptors can be seen; the softness (S) increases with an increase in the chain length of PPy, while the hardness (η) decreases in the same fashion. The EH-L gaps for the PPy+ polaronic state are significantly lower than their corresponding neutral PPy. In the polaronic model (PPy+), radicals decisively reduce the crucial excitation energy, reminiscent of excess electrons (alkali metals). The performed TDOS spectral analysis further justifies the better conductive and electronic properties of polarons (PPy+) with increased chain lengths (conjugation). The static hyperpolarizability response (βo) is recorded up to 1.3 × 102 au for 9Py, while for polaron 9Py+, it has increased up to 3.2 × 104 au. The static hyperpolarizability of the 9Py+ polaronic state is 246 times higher than that of the corresponding neutral analogue, 9Py. It is observed that the values of βo obtained at the CAM-B3LYP/6-311+G(d,p) level of theory are comparable to those obtained at the LC-BLYP and ωB97XD functionals. The βvec values show a strong correlation with the total hyperpolarizability (βo). Furthermore, the calculated second harmonic generation (SHG) values are up to 4.0 × 106 au at 532 nm, whereas electro-optic Pockel's effect (EOPE) is much more pronounced at the smaller dispersion frequency (1064 nm). The TD-DFT study reveal the red-shifted absorption maxima (λmax) with an increased length of PPy+. A significant reduction in excitation energy (ΔE) is observed with increased length of PPy and PPy+, which also favors the improved NLO response. Hence, the studied thermally conducting polypyrrole-based polarons (PPy+) are new entries into NLO materials with better electrical and optical features.
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Affiliation(s)
- Atazaz Ahsin
- Beijing
National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School
of Chemical Sciences, University of Chinese
Academy of Sciences, Beijing 100049, China
| | - Iqra Ejaz
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad KPK, 22060, Pakistan
| | - Sehrish Sarfaraz
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad KPK, 22060, Pakistan
| | - Khurshid Ayub
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad KPK, 22060, Pakistan
| | - Haitao Ma
- Beijing
National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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Geometric, Electronic, and Optoelectronic Properties of Carbon-Based Polynuclear C 3O[C(CN) 2] 2M 3 (where M = Li, Na, and K) Clusters: A DFT Study. Molecules 2023; 28:molecules28041827. [PMID: 36838816 PMCID: PMC9965956 DOI: 10.3390/molecules28041827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/05/2023] [Accepted: 02/06/2023] [Indexed: 02/17/2023] Open
Abstract
Carbon-based polynuclear clusters are designed and investigated for geometric, electronic, and nonlinear optical (NLO) properties at the CAM-B3LYP/6-311++G(d,p) level of theory. Significant binding energies per atom (ranging from -162.4 to -160.0 kcal mol-1) indicate excellent thermodynamic stabilities of these polynuclear clusters. The frontier molecular orbital (FMOs) analysis indicates excess electron nature of the clusters with low ionization potential, suggesting that they are alkali-like. The decreased energy gaps (EH-L) with increased alkali metals size revael the improved electrical conductivity (σ). The total density of state (TDOS) study reveals the alkali metals' size-dependent electronic and conductive properties. The significant first and second hyperpolarizabilities are observed up to 5.78 × 103 and 5.55 × 106 au, respectively. The βo response shows dependence on the size of alkali metals. Furthermore, the absorption study shows transparency of these clusters in the deep-UV, and absorptions are observed at longer wavelengths (redshifted). The optical gaps from TD-DFT are considerably smaller than those of HOMO-LUMO gaps. The significant scattering hyperpolarizability (βHRS) value (1.62 × 104) is calculated for the C3 cluster, where octupolar contribution to βHRS is 92%. The dynamic first hyperpolarizability β(ω) is more pronounced for the EOPE effect at 532 nm, whereas SHG has notable values for second hyperpolarizability γ(ω).
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Sinha Roy R, Ghosh A, Banerjee S, Ghosh S, Das AK. New kind of electride sandwich complexes based on the cyclooctatetraene ligand M 12(η 8-C 8H 8) 2M 22 (M 1 = Na, K and M 2 = Ca, Mg): a theoretical study. Phys Chem Chem Phys 2023; 25:4710-4723. [PMID: 36661858 DOI: 10.1039/d2cp04127h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
In the present study, the electronic structures of a series of binuclear sandwich complexes based on the cyclooctatetraene ligand M12(η8-C8H8)2M22 (M1 = Na, K and M2 = Ca, Mg) are studied theoretically. Each cyclooctatetraene ligand binds with the metal in the η8 binding mode. The M2-M2 bond length agrees well with the reported bimetallic covalent Ca2 and Mg2 bond lengths. The Wiberg bond index (WBI) also indicates the presence of covalent M2-M2 bonds, which gives additional stability to the complex. A non-nuclear attractor (NNA) is found in-between the M2-M2 bond and the negative Laplacian of the electron density is found at the NNA. Noncovalent interaction (NCI) plot shows that electron density is localized at the M2-M2 bond. Based on the performed analysis, we have concluded that the designed sandwich complexes are electrides. We herein report, for the first time, the electride sandwich complexes of the cyclooctatetraene ligand. Due to the presence of a diffuse electron system, the electride complexes exhibit higher values of the static second hyperpolarizability within the range of 2.6 × 105 to 1.4 × 106 a.u. Among the studied complexes, M12(η8-C8H8)2Ca2 exhibit a higher value of static second hyperpolarizability.
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Affiliation(s)
- Ria Sinha Roy
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Avik Ghosh
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Soumadip Banerjee
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Suniti Ghosh
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Abhijit K Das
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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Mohajeri A, Soltani M. Nonlinear optical properties of superalkali@teetotum boron clusters with potential applications on the electro-optic modulator. COMPUT THEOR CHEM 2023. [DOI: 10.1016/j.comptc.2023.114078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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5
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Hussnain M, Shehzad RA, Muhammad S, Iqbal J, Al-Sehemi AG, Alarfaji SS, Ayub K, Yaseen M. Shedding light on the optical and nonlinear optical properties of superalkali-doped borophene. J Mol Model 2022; 28:46. [PMID: 35080664 DOI: 10.1007/s00894-022-05032-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 01/18/2022] [Indexed: 11/28/2022]
Abstract
The present investigation highlights the two-dimensional design of several interesting superalkali-doped borophene derivatives for efficient nonlinear optics (NLO). The combination effects and resulting NLO responses of borophene (B36) and superalkali units (Li3O) were evaluated by orienting superalkali clusters at various sites, such as the hub, rim, and bridge, around an B36 molecule. The charge analysis was characterized by frontier and natural bond orbital analyses, a narrowed HOMO-LUMO bandgap and greater intramolecular charge transfers. Molecular electrostatic potential surfaces demonstrated enhanced optoelectronic features of these complexes that are viable due to Li3O adsorption. Singly doped and doubly doped complexes were considered, and their NLO properties were calculated. Bandgap energy was reduced approximately threefold when doped with two Li3O. As a considerably high figure of merit, first hyperpolarizability (βo) values of up to five digits (including 10,611 au for complex A) prove that these systems can be utilized as promising candidates in various NLO applications.
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Affiliation(s)
- Muhammad Hussnain
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, 38000, Pakistan
| | - Rao Aqil Shehzad
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, 38000, Pakistan
| | - Shabbir Muhammad
- Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia.
| | - Javed Iqbal
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, 38000, Pakistan. .,Punjab Bio-Energy Institute, University of Agriculture, Faisalabad, 38040, Pakistan.
| | - Abdullah G Al-Sehemi
- Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
| | - Saleh S Alarfaji
- Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
| | - Khurshid Ayub
- Department of Chemistry, COMSAT University, KPK, Abbottabad CampusAbbottabad, 22060, Pakistan
| | - Muhammad Yaseen
- Department of Physics, University of Agriculture Faisalabad, Faisalabad, 38000, Pakistan
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Hatua K, Das HS, Mondal A, Nandi PK. Electronic second hyperpolarizability of alkaline earth metal chains end capped with −NH2 and –CN. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Neutral all metal aromatic half-sandwich complexes between alkaline earth and transition metals: an ab initio exploration. Struct Chem 2021. [DOI: 10.1007/s11224-021-01807-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Oxacarbon superalkali C3X3Y3 (X = O, S and Y = Li, Na, K) clusters as excess electron compounds for remarkable static and dynamic NLO response. J Mol Graph Model 2021; 106:107922. [PMID: 33984815 DOI: 10.1016/j.jmgm.2021.107922] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 02/07/2023]
Abstract
An intriguing class of excess electron oxacarbon superalkali clusters is explored for nonlinear optical response through density functional theory (DFT) methods at CAM-B3LYP/6-311++G(d,p). These superalkali clusters shows noticeable binding energies per atom (Eb) which reveals their thermodynamic stabilities (-86.45 ∼ -119.44 kcal mol-1). The obtained significant VIPs values also suggest the electronic stability of these clusters. The VIP values range from 2.06 eV to 3.42 eV. These clusters show remarkable electronic properties and their HOMO-LUMO gaps (EH-L) are significantly reduced. The lowest H-L gap of 0.96 eV is obtained for C3O3K3 while the highest H-L gap of 2.07 eV is calculated for C3S3Li3. The obtained PDOS spectra further provide evidence for the superior electronic properties of these clusters. The clusters show excellent nonlinear optical properties as revealed from remarkable values (1.6 × 106 au) of static first hyperpolarizability. The controlling factors for hyperpolarizability are also explored by using conventional two-level model. The calculated values of βo are correlated nicely with βtl. The crucial excitation energy is the key factor in controlling the first hyperpolarizability. In these excess electron clusters, the second hyperpolarizability (γo) response increases up to 4.3 × 109 au. Moreover, the calculated scattering hyperpolarizability (βHRS) values are quite significant in these clusters and the highest value of 1.3 × 106 au is calculated for C3S3K3. Additionally, these clusters also possess larger dynamic nonlinearities. The dynamic second hyperpolarizability with dc-Kerr effect increases up to 1.0 × 1011 au. The remarkable values for refractive index (n2) also suggest the excellent nonlinearity of these superalkali clusters.
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Wang L, Liu YL, Chen SH, He D, Li QJ, Wang MS. The shape selectivity of corannulene dimers based on concave-convex and convex-convex shape complementarity as hosts for C 60 and C 70. Phys Chem Chem Phys 2021; 23:405-414. [PMID: 33315031 DOI: 10.1039/d0cp03253k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In the formation of noncovalent complexes, the stacking arrangements of corannulene and fullerene are diverse, most of which are combinations of multiple corannulenes and fullerene. Here, a composition ratio of 2 : 1 was selected for the complex between corannulene and fullerene (C60 and C70) to investigate the effects of different superposition modes, including concave-convex and convex-convex interactions, on the stability and third-order nonlinear optical (NLO) properties of the composite materials. It was found that the concave-convex interaction was stronger and it was reported to stabilize the charge-transfer (CT) complex more effectively than the convex-convex interaction. The dispersion range of the concave-convex interaction was larger than that of the convex-convex interaction, which is consistent with the interaction energy results. The packing design with the double convex-convex interactions exhibited the largest linear optical response and third-order NLO response, which showed that the convex-convex interaction was more likely to be excited and cause intermolecular CT as compared to the concave-convex interaction. This work confirmed that the packing arrangement significantly affected the NLO response and will advance the development of NLO crystals.
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Affiliation(s)
- Li Wang
- School of Physics and Optoelectronics Engineering, Ludong University, Yantai, 264025, Shandong, China.
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10
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Effect of B, Al and Ga atoms on structures, electrical and optical properties of BeO nanotube. ChemistrySelect 2019. [DOI: 10.1002/slct.201900989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Second hyperpolarizability of diffuse-electron compounds M-NH3, M-NLi3 and M-NLi3-M of alkaline earth metals: Effect of lithiation. J Mol Graph Model 2019; 88:81-91. [DOI: 10.1016/j.jmgm.2019.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 01/09/2019] [Accepted: 01/09/2019] [Indexed: 11/19/2022]
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12
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Mondal A, Hatua K, Nandi PK. Why lithiation results large enhancement of second hyperpolarizability of delta shaped complexes M-C2H2 (M = Be, Mg and Ca)? Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.01.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Roy RS, Nandi PK. Electronic structure and large second-order non-linear optical property of COT derivatives - a theoretical exploration. Phys Chem Chem Phys 2018; 20:18744-18755. [PMID: 29961775 DOI: 10.1039/c8cp00163d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A new strategy to design new molecules based on a fused hydrocarbon ring system comprising a COT ring and two 5-membered rings has been proposed for the study of second order NLO properties. The four charge transferring groups -NR2 (R = H, Li, Na and K) in conjunction with a sufficient number of electron withdrawing groups lead to significant variation of structural parameters and polarity. The charge transfer characteristics can be strongly modulated by introducing calcium metal atoms at suitable sites. Ca metal atoms end-capping the nitrogen ends of two adjacent -CN groups lead to electride character while a Ca metal atom bonded directly to the COT ring leads to greater charge transfer. The size of the alkali metal atom has been found to have a dramatic effect on the enhancement of first hyperpolarizability. The most significant electronic asymmetry induced by the larger potassium metal atom strongly enhances the magnitude of first hyperpolarizability. The variation of first hyperpolarizability has been satisfactorily explained in terms of TD-CAMB3LYP calculated spectroscopic parameters in light of the two-state model.
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Affiliation(s)
- Ria Sinha Roy
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India.
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Patil PS, Maidur SR, Shkir M, AlFaify S, Ganesh V, Krishnakanth KN, Rao SV. Crystal growth and characterization of second- and third-order nonlinear optical chalcone derivative: (2E)-3-(5-bromo-2-thienyl)-1-(4-nitrophenyl)prop-2-en-1-one. J Appl Crystallogr 2018. [DOI: 10.1107/s1600576718006386] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Experimental and computational studies of linear and nonlinear optical (NLO) properties of (2E)-3-(5-bromo-2-thienyl)-1-(4-nitrophenyl)prop-2-en-1-one (5B2SNC) single crystals are reported. Good-quality and large-sized single crystals of 5B2SNC were successfully grown and characterized by powder X-ray diffraction and high-resolution X-ray diffractometry techniques. 5B2SNC was found to crystallize in the monoclinic noncentrosymmetric space group Cc and possesses moderately good crystalline perfection. The linear optical properties were investigated using the absorption spectrum, which reveals a direct optical band gap of 3.1 eV. The thermal stability was studied with thermogravimetric analysis/differential thermal analysis. The powder second harmonic generation efficiency was evaluated by the Kurtz and Perry method, and 5B2SNC was found to be 26 times more efficient than urea standard. Third-order NLO properties were studied by the z-scan technique with a femtosecond laser. The second hyperpolarizability was obtained to be ∼1.45 × 10−31 e.s.u. The molecule reveals a strong reverse saturation absorption and negative nonlinear refraction. The molecule exhibited good optical limiting properties, and its limiting threshold was measured to be ∼3.2 mJ cm−2. In addition, static electric dipole moments, linear polarizabilities, and first- and second-order hyperpolarizabilities were calculated by density functional theory (DFT). Highest occupied molecular orbital/lowest unoccupied molecular orbital band gaps were also evaluated by DFT calculations. The experimental and theoretical results showed that 5B2SNC exhibits excellent second- and third-order nonlinear optical properties.
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Hydrides, alkalides, and halides of calcium metal chain: electronic structure and NLO property. Struct Chem 2018. [DOI: 10.1007/s11224-017-1069-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Khajehali Z, Shamlouei HR. Structural, electrical and optical properties of Li n @C 20 ( n = 1–6) nanoclusters. CR CHIM 2018. [DOI: 10.1016/j.crci.2018.02.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mondal A, Hatua K, Roy RS, Nandi PK. Successive lithiation of acetylene, ethylene and benzene: a comprehensive computational study of large static second hyperpolarizability. Phys Chem Chem Phys 2018; 19:4768-4777. [PMID: 28133649 DOI: 10.1039/c6cp07845a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
This work is a revisit of the study of the electron correlation effect of lithium substitution on the second hyperpolarizability (106 a.u.) of acetylene, ethylene and benzene. The large quenching of mean second hyperpolarizability has been addressed by CCSD calculations. The inclusion of triple excitation in the MP4 method generally overestimates second hyperpolarizability in comparison to the MP4SDQ method. The present CCSD γav value of C6Li6: 405 × 104 a.u. obtained with a relatively larger basis set established the earlier prediction of Sadlej et al. [Phys. Chem. Phys. Chem., 2000, 2, 3393-3399] where degenerate non-dipolar transitions in low lying excited states play the crucial role. The successive lithiation results in gradual red shifting of transition energy leading to significant enhancement of second hyperpolarizability. Most of the chosen DFT functionals predict the correct qualitative trend of second hyperpolarizability. The quantitatively different results may be attributed to the case when the ground state wave function cannot be approximated by a single SD.
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Affiliation(s)
- Avijit Mondal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah-711103, India.
| | - Kaushik Hatua
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah-711103, India.
| | - Ria Sinha Roy
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah-711103, India.
| | - Prasanta K Nandi
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah-711103, India.
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Bonding modes in bis(benzene)beryllium(0): A density functional and Møller-Plesset computational investigation. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.03.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Hosseinian A, Vessally E, Babazadeh M, Edjlali L, Es’haghi M. On lithium doping in two stable nano-flakes of the B24: The double-ring versus the quasiplanar configuration. J Mol Graph Model 2018; 79:213-222. [DOI: 10.1016/j.jmgm.2017.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 11/23/2017] [Accepted: 11/23/2017] [Indexed: 11/15/2022]
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21
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Diffuse electron of alkali metals (Li, Na, K) or diffuse electron pair of alkaline earth metals (Be, Mg, Ca) which predict larger second hyperpolarizability? A comprehensive study of M⋯NH3 model compounds. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2017.12.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Hosseinian A, Nezhad PDK, Vessally E, Mohammadi R, Es’haghi M. The influence of the double-ring nanotubules diameter of Bn (n = 14, 20, 24 and 32) on the electronic and structural properties due to lithium atom doping: quantum chemistry approach. Theor Chem Acc 2017. [DOI: 10.1007/s00214-017-2184-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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The Effect of Superalkali M3O (M = Li, Na and K) on Structure, Electrical and Nonlinear Optical Properties of C20 Fullerene Nanocluster. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0730-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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The novel link between planar möbius aromatic and third order nonlinear optical properties of metal-bridged polycyclic complexes. Sci Rep 2017; 7:10182. [PMID: 28860567 PMCID: PMC5579294 DOI: 10.1038/s41598-017-10739-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 08/11/2017] [Indexed: 11/24/2022] Open
Abstract
Metal–bridged polcyclic aromatic complexes, exhibiting unusual optical effects such as near-infrared photoluminescence with particularly large Stokes shifts, long lifetimes and aggregation enhancement, have been established as unique “carbonloong chemistry”. Herein, the electronic structures, aromaticities, absorption spectra and third order nonlinear optical (NLO) responses of metal–bridged polcyclic aromatic complexes (M = Fe, Re, Os and Ir) are investigated using the density functional theory computations. It is found that the bridge–head metal can stabilize and influence rings, thus creating π–, σ– and metalla–aromaticity in an extended, π–conjugated framework. Interestingly, metal radius greatly influence the bond, aromaticity, liner and third order NLO properties, which reveals useful information to develop new applications of metal regulatory mechanism in NLO materials field. Significantly, the novel relationship between the aromaticity and third order NLO response has firstly been proposed, that the metal-bridged polycyclic complex with larger aromaticity will exhibit larger third order nonlinear optical response. It is our expectation that the novel link between aromaticity and NLO response could provide valuable information for scientists to develop the potential NLO materials on the basis of metal–bridged polycyclic complexes.
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Hosseini K, Shakerzadeh E, Bamdad M. A computational study on the electro-optical characteristics of C 2n (BN) 12-n ( n = 1–11) hetero-nanoclusters: Toward the remarkable features by the encapsulation via alkali metals. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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26
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Roy RS, Mondal A, Nandi PK. First hyperpolarizability of cyclooctatetraene modulated by alkali and alkaline earth metals. J Mol Model 2017; 23:93. [PMID: 28243890 DOI: 10.1007/s00894-017-3273-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 02/06/2017] [Indexed: 11/28/2022]
Abstract
In the present investigation, the first hyperpolarizability of alkali and alkaline earth metal derivatives of cyclooctatetraene (COT) has been calculated using BHHLYP and CAM-B3LYP functional for 6-311++G(d,p), 6-311++G(3df,3pd), and aug-pc 2 basis sets. Introduction of Na/K atoms at the axial position of COT and Li, Na, K/Be, Mg, Ca metal atoms and cyanide groups at the equatorial sites leads to lager enhancement of first hyperpolarizability. The ring charge density can account for the variation of first hyperpolarizability. The two state model has been invoked to explain the variation of first hyperpolarizability.
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Affiliation(s)
- Ria Sinha Roy
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, 711 103, India
| | - Avijit Mondal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, 711 103, India
| | - Prasanta K Nandi
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, 711 103, India.
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The influence of Sc doping on structural, electronic and optical properties of Be 12O 12, Mg 12O 12 and Ca 12O 12 nanocages: a DFT study. J Mol Model 2017; 23:82. [PMID: 28213715 DOI: 10.1007/s00894-017-3243-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 01/23/2017] [Indexed: 10/20/2022]
Abstract
Density functional theory (DFT) calculations were used to study the effect of scandium doping on the structural, energetic, electronic, linear and nonlinear optical (NLO) properties of Be12O12, Mg12O12 and Ca12O12 nanoclusters. Scandium (Sc) doping on nanoclusters leads to narrowing of their E g, which enhances their conductance greatly. Also, the polarizability (α) and first hyperpolarizability (β0) of nanoclusters were dramatically increased as Be, Mg or Ca atoms are substituted with a Sc atom. Among all clusters, α and β0 values for Sc-doped Ca12O12 were the largest. Consequently, the effect of the doping atom, as well as of cluster size, on electronic and optical properties was explored. Time dependent (TD)-DFT calculations were also carried out to confirm the β0 values; the results show that the higher value of first hyperpolarizability belongs to Sc-doped Ca12O12, which has the smallest transition energy (ΔEgn). The results obtained show that these clusters can be candidates for using in electronic devices and NLO materials in industry.
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Shakerzadeh E, Tahmasebi E, Biglari Z. A quantum chemical study on the remarkable nonlinear optical and electronic characteristics of boron nitride nanoclusters by complexation via lithium atom. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.05.090] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hatua K, Nandi PK. Effect of alkaline earth metal at the single wall CNT mouth on the electronic structure and second hyperpolarizability. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2016. [DOI: 10.1142/s0219633616500401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In the present work, electronic structure and second hyperpolarizability of a number of alkaline earth metals (M [Formula: see text] Be, Mg and Ca) complexes with carbon nanotube (CNT) has been studied by using different DFT functional. The complexes have sufficient thermal stability. Significant amount of charge transfer from metal to CNT results in stronger ground state polarization. The second hyperpolarizability obtained at different DFT functional (BHHLYP, CAM-B3LYP, B2PLYP, [Formula: see text]B97XD) showed a consistent trend. The magnitude of second hyperpolarizability of M@CNT[3,0] complexes enhances rather appreciably when a second metal atom is introduced into other mouth position. The longitudinal component of second hyperpolarizability of M@CNT[3,0]@M complexes increases with increasing size of metal atom. The magnitude of second hyperpolarizability of Ca@CNT[3,0]@Ca complex is comparable with Fe([Formula: see text]-C[Formula: see text]B[Formula: see text]. However, widening/lengthening of CNT markedly reduces the cubic responses. The two state model can qualitatively explain the variation of second hyperpolarizability.
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Affiliation(s)
- Kaushik Hatua
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
| | - Prasanta K. Nandi
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
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Bayram M, Naglav D, Wölper C, Schulz S. Synthesis and Structure of Bis(diphenylphosphinimino)methanide and Bis(diphenylphosphinimino)methanediide Beryllium Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00380] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Melike Bayram
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, 45117 Essen, Germany
| | - Dominik Naglav
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, 45117 Essen, Germany
| | - Christoph Wölper
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, 45117 Essen, Germany
| | - Stephan Schulz
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, 45117 Essen, Germany
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Shakerzadeh E, Biglari Z, Tahmasebi E. M@B40 (M = Li, Na, K) serving as a potential promising novel NLO nanomaterial. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.05.014] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Banerjee P, Nandi PK. Electronic structures and second hyperpolarizabilities of alkaline earth metal complexes end-capped with NA2 (A = H, Li, Na). Phys Chem Chem Phys 2016; 18:12505-20. [DOI: 10.1039/c5cp07661g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The ground state structures and NLO properties of a number of alkaline earth metal complexes end-capped with NA2 groups (A = H, Li, Na) are calculated by employing the CAM-B3LYP, wB97XD and B2PLYP functionals along with MP2 and CCSD(T) for 6-311++G(d,p), 6-311++G(3df,3pd), aug-cc-pVTZ, aug-pc-2 and Hypol basis sets.
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Affiliation(s)
- Paramita Banerjee
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah-711103
- India
| | - Prasanta K. Nandi
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah-711103
- India
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Hatua K, Nandi PK. Second hyperpolarizability of delta shaped disubstituted acetylene complexes of beryllium, magnesium, and calcium. J Mol Model 2015; 21:254. [PMID: 26361770 DOI: 10.1007/s00894-015-2804-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 08/26/2015] [Indexed: 10/23/2022]
Abstract
Present theoretical study involves the delta shape complexes of beryllium, magnesium, and calcium where the metal atom interacts perpendicularly with disubstituted acetylene. Most of the complexes are found to be fairly stable. The dependence of second-hyperpolarizability on the basis set with increasing polarization and diffuse functions has been examined which showed the importance of 'f-type' type polarization function for heavy metal (Mg, Ca) and 'd-type' polarization function for beryllium. Larger second hyperpolarizability has been predicted for complexes having significant ground state polarization and low lying excited states favoring strong electronic coupling. Transition energy plays the most significant role in modulating the second hyperpolarizability.
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Affiliation(s)
- Kaushik Hatua
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, 711103, India
| | - Prasanta K Nandi
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, 711103, India.
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Electronic structure and second hyperpolarizability of M(NA2)2 (M = Be, Mg, Ca; A = H, Li, Na) complexes. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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36
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Hatua K, Nandi PK. Diradical character and second hyperpolarizability of multidecker inverse sandwich complexes of Mg and Ca. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.03.055] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hatua K, Nandi PK. Second hyperpolarizability of multimetallocenes [Cp–Mn–Cp] of Be, Mg and Ca. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2015. [DOI: 10.1142/s0219633615500029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Multimetallocene complexes ( Cp – M n– Cp ) of Be , Mg and Ca have been considered for the theoretical study of static second hyperpolarizability using a number of DFT functionals. Owing to the cooperative effect in bonding, beryllium forms multiberyllocene complexes ( Cp – Be n– Cp ) which have sufficient thermal stability with respect to dissociation into neutral fragments up to n = 10. On the other hand, multimetallocene complexes of Mg and Ca are found to be stable for n ≤ 5 which may be due to the weaker covalent bonding interaction between the larger metal atoms. The rather small variation of linear and cubic polarizabilities of Cp – Be n– Cp complexes beyond n = 5 arises from the rather weaker charge transfer transitions. The difference in NLO property among the investigated metal complexes arises from the extent of charge transfer from the terminal metal atoms and the distance between them. The charge transfer at longer distances in the ground state of Mg and Ca complexes leads to more intense electronic transition — the spectroscopic parameters of which strongly favors the enhancement of second hyperpolarizability.
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Affiliation(s)
- Kaushik Hatua
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
| | - Prasanta K. Nandi
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
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Interlayer charge-transfer in impacting the second hyperpolarizabilities: Radical and cation species of hexathiophenalenylium and its nitro dimers. J Mol Graph Model 2015; 55:33-40. [DOI: 10.1016/j.jmgm.2014.10.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 10/28/2014] [Accepted: 10/30/2014] [Indexed: 11/20/2022]
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Abstract
Modulation of first hyperpolarizability on varying structure of the bridge.
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Affiliation(s)
- Ria Sinha Roy
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711 103
- India
| | - Prasanta K. Nandi
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711 103
- India
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40
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Wang L, Wang WY, Fang XY, Zhu CL, Qiu YQ. Third order NLO properties of corannulene and its Li-doped dimers: effect of concave–convex and convex–convex structures. RSC Adv 2015. [DOI: 10.1039/c5ra09864e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The convex–convex stacking motif of corannulene dimers enhances the third-order NLO response due to obvious interlayer charge transfer.
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Affiliation(s)
- Li Wang
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- People's Republic of China
| | - Wen-Yong Wang
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- People's Republic of China
| | - Xin-Yan Fang
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- People's Republic of China
| | - Chang-Li Zhu
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- People's Republic of China
| | - Yong-Qing Qiu
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- People's Republic of China
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Double coned inverse sandwich complexes [M-(η4-C4H4)-M′] of Gr-IA and Gr-IIA Metals: theoretical study of electronic of structure and second hyperpolarizability. J Mol Model 2014; 20:2440. [DOI: 10.1007/s00894-014-2440-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 08/25/2014] [Indexed: 10/24/2022]
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Hatua K, Nandi PK. Static second hyperpolarizability of Λ shaped alkaline earth metal complexes. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2014. [DOI: 10.1142/s0219633614500394] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A number of Λ shaped complexes of alkaline earth metals Be , Mg and Ca with varying terminal groups have been considered for the theoretical study of their second hyperpolarizability. The chosen complexes are found to be sufficiently stable and for a chosen ligand the stability decreases in the order: Be -complex > Ca -complex > Mg -complex. The calculated results of second hyperpolarizability obtained at different DFT functionals for the 6-311++G(d,p) basis set are found to be fairly consistent. The Λ shaped ligands upon complex formation with metals lead to strong enhancement of second hyperpolarizability. The highest magnitude of cubic polarizability has been predicted for the metal complex having > C ( C 2 H 5)2 group. For a chosen ligand, the magnitude of second hyperpolarizability increases in the order Be -complex < Mg -complex < Ca -complex which is the order of increasing size and electropositive character of the metal. The variation of second hyperpolarizability among the investigated metal complexes has been explained in terms of the transition energy and transition moment associated with the most intense electronic transition.
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Affiliation(s)
- Kaushik Hatua
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India
| | - Prasanta K. Nandi
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India
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