Comparative vapour phase FTIR spectra and vibrational assignment of manganese pentacarbonyls derivatives of the type XMn(CO)5: (where X=Br, Cl, I, H, D, CH3, CD3, CF3)

Mahmood, Zaid; Azam, M.; Mushtaq, Afifa; Kausar, Ruksana; Kausar, Shabana; Gilani, Syeda Rubina

doi:10.1016/j.saa.2005.11.024

Cited by 9 publications

(4 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, in Figure the simulation shows a high-frequency A 1 mode in all cases, which is out of the frequency range of panel a. Our FTIR assignment of natural abundant 13 C discussed above is in agreement with previous studies. ,− …”

Section: Resultssupporting

confidence: 90%

“…1,13−23 Transition metal carbonyl coordination compounds usually have well-defined structures. A very good example of such is manganese pentacarbonyl bromide (Mn(CO) 5 Br), which is in C 4v symmetry 24,25 and is known to play an important role in catalyzing the C−H alkenylation reactions. 26 Mn(CO) 5 Br has five CO groups, however, it only exhibits a high-frequency strong transition and a low-frequency weak transition in the CO stretching frequency region.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Two-Dimensional Infrared Study of ¹³C-Natural Abundant Vibrational Transition Reveals Intramolecular Vibrational Redistribution Rather than Fluxional Exchange in Mn(CO)₅Br

2016

View full text Add to dashboard Cite

In this work, molecular-symmetry enhanced (13)CO natural abundant isotopic infrared transition was identified in Mn(CO)5Br dissolved in CCl4 by FTIR spectroscopy. Diagonal and associated off-diagonal two-dimensional IR (2D IR) peaks of the (13)CO-species were found to be spectrally separated from the all-(12)CO species, allowing a direct probe of the (13)C natural abundant ensemble. Temperature-dependent FTIR experiment showed no evidence of ligand exchange in the metal carbonyl complex. Intramolecular vibrational redistribution dynamics among the CO stretching vibrational states were extracted using population-time dependent 2D IR diagonal and off-diagonal peaks for both radial mono-(13)CO and all-(12)CO isotopomers. This work demonstrates the potential use of natural abundant isotopic molecular species as a probe for revealing equilibrium and nonequilibrium structural dynamics in condensed-phase molecular systems.

show abstract

Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Infrared Study of ¹³C-Natural Abundant Vibrational Transition Reveals Intramolecular Vibrational Redistribution Rather than Fluxional Exchange in Mn(CO)₅Br

2016

View full text Add to dashboard Cite

show abstract

“…For NaBH4-SG1.2, the additional peaks observed at 2582, 1194, 1077, and 994 cm -1 were assigned to the C-O stretching modes associated with NaOCH3 [21][22][23][24][25][26][27][28][29]. Such vibrations were not observed at higher molar ratio of NaOCH3 and B2H6 and this confirmed that above a ratio of 1.2, NaOCH3 was fully reacted.…”

Section: Composition Of the As-synthesized Materialsmentioning

confidence: 54%

Direct Synthesis of NaBH4 Nanoparticles from NaOCH3 for Hydrogen Storage

Wang

Aguey‐Zinsou

2019

Energies

View full text Add to dashboard Cite

Hydrogen is regarded as a promising energy carrier to substitute fossil fuels. However, storing hydrogen with high density remains a challenge. NaBH 4 is a potential hydrogen storage material due to its high gravimetric hydrogen density (10.8 mass%), but the hydrogen kinetic and thermodynamic properties of NaBH 4 are poor against the application needs. Nanosizing is an effective strategy to improve the hydrogen properties of NaBH 4 . In this context, we report on the direct synthesis of NaBH 4 nanoparticles (~6-260 nm) from the NaOCH 3 precursor. The hydrogen desorption properties of such nanoparticles are reported as well as experimental conditions that lead to the synthesis of (Na 2 B 12 H 12 ) free NaBH 4 nanoparticles.

show abstract

“…The product Mn(CO) 5 CH 3 , a white solid, was authenticated by its 1 H NMR (CD 2 Cl 2 ) (δ = −0.09 ppm) and IR spectra (ν CO = 2111(w), 2009(vs), and 1986(w) cm –1 ).…”

Section: Experimental Methodsmentioning

confidence: 99%

Formation of MgO-Supported Manganese Carbonyl Complexes by Chemisorption of Mn(CO)₅CH₃

et al. 2013

View full text Add to dashboard Cite

MgO-supported manganese carbonyl complexes were prepared by chemical vapor deposition of Mn(CO)5CH3 on partially dehydroxylated, high-area MgO powder. X-ray absorption spectra identify the resultant surface species, on average, as Mn(CO)4(Os)2 (where the two oxygen ligands are part of the MgO surface), and infrared spectra show that the chemisorption results from the reaction of Mn(CO)5CH3 with OH groups of the MgO surface. Electron paramagnetic resonance and X-ray absorption near edge data indicate that the manganese was in a positive oxidation state other than +2, but the value is not determined, and the IR spectra indicate the presence of a mixture of manganese carbonyls. Extended X-ray absorption fine structure spectra determine the average Mn-CO bond distance to be 1.87 Å and the average Mn-O bond distance to be 2.12 Å. The surface complex was found to be stable in O2 at room temperature.

show abstract

Comparative vapour phase FTIR spectra and vibrational assignment of manganese pentacarbonyls derivatives of the type XMn(CO)5: (where X=Br, Cl, I, H, D, CH3, CD3, CF3)

Cited by 9 publications

References 21 publications

Two-Dimensional Infrared Study of ¹³C-Natural Abundant Vibrational Transition Reveals Intramolecular Vibrational Redistribution Rather than Fluxional Exchange in Mn(CO)₅Br

Two-Dimensional Infrared Study of ¹³C-Natural Abundant Vibrational Transition Reveals Intramolecular Vibrational Redistribution Rather than Fluxional Exchange in Mn(CO)₅Br

Direct Synthesis of NaBH4 Nanoparticles from NaOCH3 for Hydrogen Storage

Formation of MgO-Supported Manganese Carbonyl Complexes by Chemisorption of Mn(CO)₅CH₃

Contact Info

Product

Resources

About

Comparative vapour phase FTIR spectra and vibrational assignment of manganese pentacarbonyls derivatives of the type XMn(CO)5: (where X=Br, Cl, I, H, D, CH3, CD3, CF3)

Cited by 9 publications

References 21 publications

Two-Dimensional Infrared Study of 13C-Natural Abundant Vibrational Transition Reveals Intramolecular Vibrational Redistribution Rather than Fluxional Exchange in Mn(CO)5Br

Two-Dimensional Infrared Study of 13C-Natural Abundant Vibrational Transition Reveals Intramolecular Vibrational Redistribution Rather than Fluxional Exchange in Mn(CO)5Br

Direct Synthesis of NaBH4 Nanoparticles from NaOCH3 for Hydrogen Storage

Formation of MgO-Supported Manganese Carbonyl Complexes by Chemisorption of Mn(CO)5CH3

Contact Info

Product

Resources

About

Two-Dimensional Infrared Study of ¹³C-Natural Abundant Vibrational Transition Reveals Intramolecular Vibrational Redistribution Rather than Fluxional Exchange in Mn(CO)₅Br

Two-Dimensional Infrared Study of ¹³C-Natural Abundant Vibrational Transition Reveals Intramolecular Vibrational Redistribution Rather than Fluxional Exchange in Mn(CO)₅Br

Formation of MgO-Supported Manganese Carbonyl Complexes by Chemisorption of Mn(CO)₅CH₃