1
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Exploring pentavalent phosphorous bonding in phosphoryl chloride-halocarbon heterodimers at low temperatures and ab initio Computations. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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2
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Gopi R, Ramanathan N, Sundararajan K. The structure of benzonitrile-water complex as unveiled by matrix isolation infrared spectroscopy: Is it linear or cyclic at low temperatures? J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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3
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Sarkar S, Sruthi PK, Ramanathan N, Sundararajan K. Strong proton-shared hydrogen bonding in a methyl imidazole⋯HCl complex: evidence from matrix isolation infrared spectroscopy and ab initio computations. NEW J CHEM 2020. [DOI: 10.1039/d0nj00029a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Evidence for proton-shared hydrogen bonding is provided in a methyl imidazole⋯HCl complex using matrix isolation infrared spectroscopy and ab initio computations.
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Affiliation(s)
- Shubhra Sarkar
- Materials Chemistry & Metal Fuel Cycle Group
- Homi Bhabha National Institute
- Indira Gandhi Center for Atomic Research
- Kalpakkam.603102
- India
| | - P. K. Sruthi
- Materials Chemistry & Metal Fuel Cycle Group
- Homi Bhabha National Institute
- Indira Gandhi Center for Atomic Research
- Kalpakkam.603102
- India
| | - N. Ramanathan
- Materials Chemistry & Metal Fuel Cycle Group
- Homi Bhabha National Institute
- Indira Gandhi Center for Atomic Research
- Kalpakkam.603102
- India
| | - K. Sundararajan
- Materials Chemistry & Metal Fuel Cycle Group
- Homi Bhabha National Institute
- Indira Gandhi Center for Atomic Research
- Kalpakkam.603102
- India
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4
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Ramanathan N, Sarkar S, Sundararajan K. Prototypical cyclohexane dimers: spectroscopic evidence for σ stacking at low temperatures. Phys Chem Chem Phys 2020; 22:905-913. [DOI: 10.1039/c9cp05237b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In this work, the first unambiguous spectroscopic evidence for the existence of σ stacking interactions in cyclohexane dimers has been provided using matrix isolation infrared spectroscopy.
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Affiliation(s)
- N. Ramanathan
- Materials Chemistry and Metal Fuel Cycle Group
- Homi Bhabha National Institute
- Indira Gandhi Centre for Atomic Research
- Kalpakkam 603 102
- India
| | - Shubhra Sarkar
- Materials Chemistry and Metal Fuel Cycle Group
- Homi Bhabha National Institute
- Indira Gandhi Centre for Atomic Research
- Kalpakkam 603 102
- India
| | - K. Sundararajan
- Materials Chemistry and Metal Fuel Cycle Group
- Homi Bhabha National Institute
- Indira Gandhi Centre for Atomic Research
- Kalpakkam 603 102
- India
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5
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Ramanathan N, Sarkar S, Sundararajan K, Chandrasekar A, Sankaran K, Suresh A. Influence of Branching on the Conformational Space: Case Study of Tri-sec-butyl Phosphate Using Matrix Isolation Infrared Spectroscopy and DFT Computations. J Phys Chem A 2018; 122:8229-8242. [DOI: 10.1021/acs.jpca.8b08157] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- N. Ramanathan
- Materials Chemistry & Metal Fuel Cycle Group, Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India
| | - Shubhra Sarkar
- Materials Chemistry & Metal Fuel Cycle Group, Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India
| | - K. Sundararajan
- Materials Chemistry & Metal Fuel Cycle Group, Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India
| | - Aditi Chandrasekar
- Materials Chemistry & Metal Fuel Cycle Group, Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India
| | - K. Sankaran
- Materials Chemistry & Metal Fuel Cycle Group, Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India
| | - A. Suresh
- Materials Chemistry & Metal Fuel Cycle Group, Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India
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6
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Sruthi PK, Ramanathan N, Sarkar S, Sundararajan K. Pentavalent phosphorus as a unique phosphorus donor in POCl3 homodimer and POCl3–H2O heterodimer: matrix isolation infrared spectroscopic and computational studies. Phys Chem Chem Phys 2018; 20:22058-22075. [DOI: 10.1039/c8cp03937b] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Phosphorus, an important element among the pnicogen group, opens up avenues for experimental and computational explorations of its interaction in a variety of compounds.
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Affiliation(s)
- P. K. Sruthi
- Materials Chemistry & Metal Fuel Cycle Group
- Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research
- Kalpakkam 603 102
- India
| | - N. Ramanathan
- Materials Chemistry & Metal Fuel Cycle Group
- Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research
- Kalpakkam 603 102
- India
| | - Shubhra Sarkar
- Materials Chemistry & Metal Fuel Cycle Group
- Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research
- Kalpakkam 603 102
- India
| | - K. Sundararajan
- Materials Chemistry & Metal Fuel Cycle Group
- Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research
- Kalpakkam 603 102
- India
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7
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Ramanathan N, Sundararajan K, Viswanathan KS. Conformational Landscape of Tri-n-butyl Phosphate: Matrix Isolation Infrared Spectroscopy and Systematic Computational Analysis. J Phys Chem A 2017; 121:6108-6121. [DOI: 10.1021/acs.jpca.7b05006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- N. Ramanathan
- Materials
Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamil Nadu, India
| | - K. Sundararajan
- Materials
Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamil Nadu, India
| | - K. S. Viswanathan
- Department of Chemical Sciences, Indian Institute of Science Education & Research, Sector 81, Mohali 140306, Punjab, India
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8
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Karir G, Viswanathan KS. H−π Landscape of the Phenylacetylene–HCl System: Does This Provide the Gateway to the Markovnikov Addition? J Phys Chem A 2017; 121:5797-5808. [DOI: 10.1021/acs.jpca.7b04853] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ginny Karir
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Sector 81, Mohali 140306, Punjab India
| | - K. S. Viswanathan
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Sector 81, Mohali 140306, Punjab India
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9
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Saini J, Viswanathan KS. Discerning Near-Isoergic Isomers. A Matrix Isolation Infrared and ab Initio Study of the Propargyl Alcohol Dimers. J Phys Chem A 2017; 121:1448-1459. [DOI: 10.1021/acs.jpca.6b12702] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jyoti Saini
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Punjab 140306, India
| | - K. S. Viswanathan
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Punjab 140306, India
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10
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Raut AH, Karir G, Viswanathan KS. Matrix Isolation Infrared and Ab Initio Study of the Interaction of N-Heterocyclic Carbene with Water and Methanol: A Case Study of a Strong Hydrogen Bond. J Phys Chem A 2016; 120:9390-9400. [DOI: 10.1021/acs.jpca.6b08148] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Akshay H. Raut
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Sector 81, Mohali 140306, Punjab, India
| | - Ginny Karir
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Sector 81, Mohali 140306, Punjab, India
| | - K. S. Viswanathan
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Sector 81, Mohali 140306, Punjab, India
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11
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Ramanathan N, Sundararajan K, Vidya K, Jemmis ED. Non-covalent C-Cl…π interaction in acetylene-carbon tetrachloride adducts: Matrix isolation infrared and ab initio computational studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 157:69-78. [PMID: 26722673 DOI: 10.1016/j.saa.2015.12.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/23/2015] [Accepted: 12/14/2015] [Indexed: 06/05/2023]
Abstract
Non-covalent halogen-bonding interactions between π cloud of acetylene (C2H2) and chlorine atom of carbon tetrachloride (CCl4) have been investigated using matrix isolation infrared spectroscopy and quantum chemical computations. The structure and the energies of the 1:1 C2H2-CCl4 adducts were computed at the B3LYP, MP2 and M05-2X levels of theory using 6-311++G(d,p) basis set. The computations indicated two minima for the 1:1 C2H2-CCl4 adducts; with the C-Cl…π adduct being the global minimum, where π cloud of C2H2 is the electron donor. The second minimum corresponded to a C-H…Cl adduct, in which C2H2 is the proton donor. The interaction energies for the adducts A and B were found to be nearly identical. Experimentally, both C-Cl…π and C-H…Cl adducts were generated in Ar and N2 matrixes and characterized using infrared spectroscopy. This is the first report on halogen bonded adduct, stabilized through C-Cl…π interaction being identified at low temperatures using matrix isolation infrared spectroscopy. Atoms in Molecules (AIM) and Natural Bond Orbital (NBO) analyses were performed to support the experimental results. The structures of 2:1 ((C2H2)2-CCl4) and 1:2 (C2H2-(CCl4)2) multimers and their identification in the low temperature matrixes were also discussed.
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Affiliation(s)
- N Ramanathan
- Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India
| | - K Sundararajan
- Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India.
| | - K Vidya
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala 695016, India
| | - Eluvathingal D Jemmis
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India.
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12
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Ramanathan N, Sankaran K, Sundararajan K. PCl3–C6H6 heterodimers: evidence for P⋯π phosphorus bonding at low temperatures. Phys Chem Chem Phys 2016; 18:19350-8. [DOI: 10.1039/c6cp03825e] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A phosphorous trichloride (PCl3)–benzene (C6H6) heterodimer was generated in a low temperature N2 matrix and was characterized using infrared spectroscopy.
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Affiliation(s)
- N. Ramanathan
- Chemistry Group
- Indira Gandhi Center for Atomic Research
- Kalpakkam – 603102
- India
| | - K. Sankaran
- Chemistry Group
- Indira Gandhi Center for Atomic Research
- Kalpakkam – 603102
- India
| | - K. Sundararajan
- Chemistry Group
- Indira Gandhi Center for Atomic Research
- Kalpakkam – 603102
- India
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13
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Gas phase reaction of phosphorus trichloride and methanol: Matrix isolation infrared and DFT studies. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.07.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Ramanathan N, Brahmmananda Rao CVS, Sankaran K, Sundararajan K. Unraveling the Conformational Landscape of Triallyl Phosphate: Matrix Isolation Infrared Spectroscopy and Density Functional Theory Computations. J Phys Chem A 2015; 119:4017-31. [DOI: 10.1021/acs.jpca.5b00889] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- N. Ramanathan
- Chemistry
Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India
| | | | - K. Sankaran
- Chemistry
Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India
| | - K. Sundararajan
- Chemistry
Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India
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15
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Joshi PR, Ramanathan N, Sundararajan K, Sankaran K. Evidence for Phosphorus Bonding in Phosphorus Trichloride–Methanol Adduct: A Matrix Isolation Infrared and ab Initio Computational Study. J Phys Chem A 2015; 119:3440-51. [DOI: 10.1021/jp511156d] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Prasad Ramesh Joshi
- Chemistry
Group, Indira Gandhi Center for Atomic Research, Kalpakkam 603102, Tamil Nadu, India
| | - N. Ramanathan
- Chemistry
Group, Indira Gandhi Center for Atomic Research, Kalpakkam 603102, Tamil Nadu, India
| | - K. Sundararajan
- Chemistry
Group, Indira Gandhi Center for Atomic Research, Kalpakkam 603102, Tamil Nadu, India
| | - K. Sankaran
- Chemistry
Group, Indira Gandhi Center for Atomic Research, Kalpakkam 603102, Tamil Nadu, India
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16
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17
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Sundararajan K, Ramanathan N. Dimethoxymethane–Hydrogen Chloride Interaction: Gas Phase versus Low-Temperature Behavior Studied Using Matrix Isolation Infrared and Density Functional Theory Methods. J Phys Chem A 2013; 117:2347-57. [DOI: 10.1021/jp400332v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K. Sundararajan
- Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102,
Tamil Nadu, India
| | - N. Ramanathan
- Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102,
Tamil Nadu, India
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