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Chidambaranathan B, Sivaraj S, Vijayamathubalan P, Abraham Rajasekar S, Selvakumar S. [4-(2-Aminoethyl)morpholine-κ 2N, N']di-bromidocadmium(II): synthesis, crystal structure and Hirshfeld surface analysis. Acta Crystallogr E Crystallogr Commun 2024; 80:271-276. [PMID: 38456053 PMCID: PMC10915673 DOI: 10.1107/s2056989024000963] [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: 11/06/2023] [Accepted: 01/27/2024] [Indexed: 03/09/2024]
Abstract
The title compound, [CdBr2(C6H14N2O)], was synthesized upon complexation of 4-(2-aminoethyl)morpholine and cadmium(II) bromide tetra-hydrate at 303 K. It crystallizes as a centrosymmetric dimer, with one cadmium atom, two bromine atoms and one N,N'-bidentate 4-(2-aminoethyl)morpholine ligand in the asymmetric unit. The metal atom is six-coordinated and has a distorted octa-hedral geometry. In the crystal, O⋯Cd inter-actions link the dimers into a polymeric double chain and inter-molecular C-H⋯O hydrogen bonds form R 2 2(6) ring motifs. Further C-H⋯Br and N-H⋯Br hydrogen bonds link the components into a three-dimensional network. As the N-H⋯Br hydrogen bonds are shorter than the C-H⋯Br inter-actions, they have a larger effect on the packing. A Hirshfeld surface analysis reveals that the largest contributions to the packing are from H⋯H (46.1%) and Br⋯H/H⋯Br (38.9%) inter-actions with smaller contributions from the O⋯H/H⋯O (4.7%), Br⋯Cd/Cd⋯Br (4.4%), O⋯Cd/Cd⋯O (3.5%), Br⋯Br (1.1%), Cd⋯H/H⋯Cd (0.9%), Br⋯O/O⋯Br (0.3%) and O⋯N/N⋯O (0.1%) contacts.
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Affiliation(s)
- B. Chidambaranathan
- PG and Research Department of Physics, Government Arts College for Men (Autonomous), Nandanam, Chennai 600 035, Tamil Nadu, India
| | - S. Sivaraj
- PG and Research Department of Physics, Government Arts College for Men (Autonomous), Nandanam, Chennai 600 035, Tamil Nadu, India
| | - P. Vijayamathubalan
- PG and Research Department of Physics, Government Arts College for Men (Autonomous), Nandanam, Chennai 600 035, Tamil Nadu, India
| | - S. Abraham Rajasekar
- Department of Physics, Sir Theagaraya College, Old Washermanpet, Chennai 600 021, Tamil Nadu, India
| | - S. Selvakumar
- PG and Research Department of Physics, Government Arts College for Men (Autonomous), Nandanam, Chennai 600 035, Tamil Nadu, India
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Lines AM, Barpaga D, Zheng RF, Collett JR, Heldebrant DJ, Bryan SA. In Situ Raman Methodology for Online Analysis of CO 2 and H 2O Loadings in a Water-Lean Solvent for CO 2 Capture. Anal Chem 2023; 95:15566-15576. [PMID: 37787757 DOI: 10.1021/acs.analchem.3c02281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Carbon capture represents a key pathway to meeting climate change mitigation goals. Powerful next-generation solvent-based capture processes are under development by many researchers, but optimization and testing would be significantly aided by integrating in situ monitoring capability. Further, real-time water analysis in water-lean solvents offers the potential to maintain their water balance in operation. To explore data acquisition techniques in depth for this purpose, Raman spectra of CO2, H2O, and a single-component water-lean solvent, N-(2-ethoxyethyl)-3-morpholinopropan-1-amine (2-EEMPA) were collected at different CO2 and H2O concentrations using an in situ Raman cell. The quantification of CO2 and H2O loadings in 2-EEMPA was done by principal component regression and partial least squares methods with analysis of uncertainties. We conclude with discussions on how this simultaneous online analysis method to quantify CO2 and H2O loadings can be an important tool to enable the optimal efficiency of water-lean CO2 solvents while also maintaining the critical water balance under operating conditions relevant to post-combustion CO2 capture.
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Affiliation(s)
- Amanda M Lines
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Washington State University, Pullman, Washington 99164, United States
| | - Dushyant Barpaga
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Richard F Zheng
- STARS Technology Corporation, Richland, Washington 99354, United States
| | - James R Collett
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - David J Heldebrant
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Washington State University, Pullman, Washington 99164, United States
| | - Samuel A Bryan
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Washington State University, Pullman, Washington 99164, United States
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Philip BM, John JS, George M, Kumar KM, M V, HS HK, Devarajegowda H, Kotresh O, Paulose TAP, Sajan D. Synthesis, comprehensive spectroscopic investigation and molecular docking studies of (6-Fluoro-2-oxo-2H-chromen-4-yl) methyl morpholine-4-carbodithioate. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Vibrational Spectroscopic, quantum computational (DFT), reactivity (ELF, LOL and Fukui), molecular docking studies and molecular dynamic simulation on (6-methoxy-2-oxo-2H-chromen-4-yl) methyl morpholine-4-carbodithioate. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Abisha W, Dhas DA, Balachandran S, Joe IH. Molecular Structure, Spectroscopic Elucidation (FT-IR, FT-Raman, UV-Visible and NMR) with NBO, ELF, LOL, RDG, Fukui, Drug Likeness and Molecular Docking Analysis on Dimethomorph. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2083195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- W. Abisha
- Department of Physics & Research Centre, Nesamony Memorial Christian College, Marthandam, Tamilnadu, India
- Department of Physics, Manonmaniam Sundaranar University Abishekapatti, Tirunelveli, India
| | - D. Arul Dhas
- Department of Physics & Research Centre, Nesamony Memorial Christian College, Marthandam, Tamilnadu, India
- Department of Physics, Manonmaniam Sundaranar University Abishekapatti, Tirunelveli, India
| | | | - I. Hubert Joe
- Department of Physics, Centre for Molecular and Biophysics Research, Mar Ivanios College, Thiruvanathapuram, India
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Das A, Chadha R, Mishra A, Maiti N. Conformational Selectivity of Merocyanine on Nanostructured Silver Films: Surface Enhanced Resonance Raman Scattering (SERRS) and Density Functional Theoretical (DFT) Study. Front Chem 2022; 10:902585. [PMID: 35769442 PMCID: PMC9234333 DOI: 10.3389/fchem.2022.902585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/25/2022] [Indexed: 12/29/2022] Open
Abstract
In this study, detailed structural and vibrational analysis of merocyanine has been investigated using Raman, surface enhanced Raman scattering (SERS) and surface-enhanced resonance Raman scattering (SERRS). The Raman, SERS and SERRS studies aided by density functional theoretical (DFT) calculations clearly established the prevalence of the trans- and cis-conformers of the protonated form of merocyanine (MCH+) in solid and acetonitrile solution. The binding characteristics of merocyanine adsorbed on nanostructured silver-coated films (SCFs) were investigated using excitation-dependent SERS, concentration-dependent SERRS and DFT studies. The conformers of merocyanine involved in the surface adsorption processes were recognized. The prominent marker bands observed at 1538 (ethylenic C=C stretch) and 1133 cm−1 (pyridinium C-N stretch) in the Raman spectrum of merocyanine in acetonitrile shifted to 1540 and 1126 cm−1, respectively on the nanostructured SCFs. The shift in the marker bands is associated with either the preferential binding of selective conformer or change in resonance equilibrium between the benzenoid and quinoid forms. The excitation wavelength dependent SERS spectrum infers that in addition to the major contribution from the electromagnetic enhancement, chemical (resonance) effect leads to the amplification of the 1540 cm−1 band. The concentration-dependent SERRS study showed maximum enhancement for the nanostructured SCFs functionalized with 1 μM concentration of merocyanine, indicative of monolayer coverage. For lower concentrations of merocyanine, the SERRS signal intensity reduced without any alteration in the peak positions. The SERRS study thus, revealed sub-nanomolar (0.1 nM) sensing of merocyanine using nanostructured SCFs with the analytical enhancement factor (AEF) of ∼ 1010 for the 1126 cm−1 and 1540 cm−1 Raman bands for MC concentration of 0.1 nM. In this study, combination of SERRS and DFT have clearly established the predominance of trans-MCH+ on the nanostructured silver surface with minor contribution from cis-MCH+, which remain exclusively bound to the surface via the phenoxyl ring O atom. This conformational surface selectivity of geometrical isomers of merocyanine using nanostructured surfaces can be further explored for energy efficient and economical separation of geometrical isomers.
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Affiliation(s)
- Abhishek Das
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Ridhima Chadha
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Amaresh Mishra
- Department of Chemistry, Sambalpur University, Sambalpur, Orissa
| | - Nandita Maiti
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
- *Correspondence: Nandita Maiti,
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Singh G, Devi A, Mohit, Diksha, Suman, Saini A, Kaur JD, Gupta S, Vikas. Synthesis, “turn-on” fluorescence signals towards Zn 2+ and Hg 2+ and monoamine oxidase A inhibitory activity using a molecular docking approach of morpholine analogue Schiff base linked organosilanes. NEW J CHEM 2022. [DOI: 10.1039/d2nj03767j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A new set of morpholine analogue Schiff base linked organosilanes (5a–5c) was prepared.
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Affiliation(s)
- Gurjaspreet Singh
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Anita Devi
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Mohit
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Diksha
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Suman
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Anamika Saini
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Jashan Deep Kaur
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Sofia Gupta
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Vikas
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
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Cao M, Zhang P, Feng Y, Zhang H, Zhu H, Lian K, Kang W. Development of a Method for Rapid Determination of Morpholine in Juices and Drugs by Gas Chromatography-Mass Spectrometry. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2018; 2018:9670481. [PMID: 29854564 PMCID: PMC5944257 DOI: 10.1155/2018/9670481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 10/18/2017] [Accepted: 11/07/2017] [Indexed: 05/13/2023]
Abstract
A reliable derivatization method has been developed to detect and quantify morpholine in apple juices and ibuprofen with gas chromatography-mass spectrometry. Morpholine can react with sodium nitrite under acidic condition to produce stable and volatile N-nitrosomorpholine derivative. In this experiment, various factors affecting the derivatization and extraction process were optimized, including volume and concentration of hydrochloric acid, quantity of sodium nitrite, derivatization temperature, derivatization time, extraction reagents, and extraction time. The derivative was extracted with dichloromethane and determined by gas chromatography-mass spectrometry. The linearity range of morpholine was 10-500 μg·L-1 with good correlation, and limits of detection (LOD) and limits of quantification (LOQ) were 7.3 μg·L-1 and 24.4 μg·L-1, respectively. Low, medium, and high concentrations of morpholine were added in apple juices and ibuprofen samples to evaluate standard recovery rate and relative standard deviation. The spiked recovery rate ranged from 94.3% to 109.0%, and the intraday repeatability and interday reproducibility were 2.0%-4.4% and 3.3%-7.0%, respectively. The developed method has good accuracy and precision. This quantitative method for morpholine is simple, sensitive, rapid, and low cost and can successfully be applied to analyze the residual morpholine in apple juices and drug samples.
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Affiliation(s)
- Mengsi Cao
- School of Public Health, Hebei Medical University, Shijiazhuang 050017, China
| | - Pingping Zhang
- Department of Reproductive Genetic Family, Hebei General Hospital, Shijiazhuang 050017, China
| | - Yanru Feng
- School of Public Health, Hebei Medical University, Shijiazhuang 050017, China
| | - Huayin Zhang
- School of Public Health, Hebei Medical University, Shijiazhuang 050017, China
| | - Huaijiao Zhu
- School of Public Health, Hebei Medical University, Shijiazhuang 050017, China
| | - Kaoqi Lian
- School of Public Health, Hebei Medical University, Shijiazhuang 050017, China
- Hebei Province Key Laboratory of Environment and Human Health, Shijiazhuang 050017, China
| | - Weijun Kang
- School of Public Health, Hebei Medical University, Shijiazhuang 050017, China
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