scholarly journals Functionalization and Hydrogenation of Carbon Chains Derived from CO

2021 ◽  
Author(s):  
Maria Batuecas ◽  
Richard Kong ◽  
Andrew White ◽  
Mark Crimmin
Keyword(s):  
Dft Calculations ◽  
Chain Length ◽  
Complete Control ◽  
Carbon Chains ◽  
Insight Into

Selective reactions that combine H2, CO and organic electrophiles (aldehyde, ketones, isocyanide) to form hydrogenated C3 and C4 carbon chains are reported. These reactions proceed by CO homologation mediated by [W(CO)6] and an aluminum(I) reductant, followed by functionalization and hydrogenation of the chain ends. A combination of kinetics (rates, KIEs) and DFT calculations has been used to gain insight into a key step which involves hydrogenation of a metallocarbene intermediate. These findings expand the extremely small scope of systems that combine H2 and CO to make well-defined products with complete control over chain length and functionality.

Insight into the formation of H-bonds propagating the monomeric zinc complexes of a tridentate reduced Schiff base to form an infinite chain

CrystEngComm ◽  
2021 ◽  
Author(s):  
Mainak Karmakar ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Dft Calculations ◽  
Zinc Complexes ◽  
Infinite Chain ◽  
State Structure ◽  
Computational Tools ◽  
Solid State Structure ◽  
Reduced Schiff Base ◽  
Insight Into

The formation of an infinite 1D assembly is governed by the H-bonding interactions in the solid state structure of the two zinc complexes. It has been analyzed energetically using DFT calculations and several computational tools.

The Use of N-alkanes for Estimating Intake and Passage Rate in Horses

1996 ◽  
Vol 1996 ◽  
pp. 98-98
Author(s):  
B M L McLean ◽  
R W Mayes ◽  
F D DeB Hovell
Keyword(s):  
Recent Work ◽  
Chain Length ◽  
Carbon Chain ◽  
Carbon Chain Length ◽  
Passage Rate ◽  
Forage Crops ◽  
Carbon Chains ◽  
Naturally Occurring ◽  
Chain Lengths ◽  
Long Chain

Alkanes occur naturally in all plants, although forage crops tend to have higher alkane contents than cereals. N-alkanes have odd-numbered carbon chains. They are ideal for use as markers in feed trials, because, they are inert, indigestible and naturally occurring, and can be recovered in animal faeces. Synthetic alkanes (even-numbered carbon chains) are available commercially and can also used as external markers. Dove and Mayes (1991) cite evidence indicating that faecal recovery of alkanes in ruminants increases with increasing carbon-chain length. Thus the alkane “pairs” (e.g. C35 & C36, and C32 & C33) are used in calculating intake and digestibility because they are long chain and adjacent to each other. However, recent work by Cuddeford and Mayes (unpublished) has found that in horses the faecal recovery rates are similar regardless of chain lengths.

Insight into the structure and morphology of Run clusters on Co(111) and Co(311) surfaces

2018 ◽  
Vol 8 (10) ◽  
pp. 2728-2739 ◽  
Author(s):  
Lili Liu ◽  
Mengting Yu ◽  
Qiang Wang ◽  
Bo Hou ◽  
Yan Liu ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Dft Calculations ◽  
Density Functional ◽  
Fischer Tropsch ◽  
Functional Theory ◽  
Fischer Tropsch Synthesis ◽  
Structure And Morphology ◽  
Growth Modes ◽  
Ru Promoter ◽  
Insight Into

The adsorption configurations, growth modes and morphology of a Ru promoter under the approximate conditions of cobalt catalyzed Fischer–Tropsch synthesis (FTS) were investigated by density functional theory (DFT) calculations.

An insight into the non-covalent Pb⋯S and S⋯S interactions in the solid-state structure of a hemidirected lead(ii) complex

CrystEngComm ◽  
2020 ◽  
Vol 22 (2) ◽  
pp. 237-247 ◽  
Author(s):  
Saikat Mirdya ◽  
Snehasis Banerjee ◽  
Shouvik Chattopadhyay
Keyword(s):  
Solid State ◽  
Dft Calculations ◽  
State Structure ◽  
Solid State Structure ◽  
Insight Into

A hemi-directed copper(ii)/lead(ii) complex has been synthesized and characterized. The energy of chalcogen–chalcogen and tetrel bonding interactions in this complex was analyzed by DFT calculations.

1H–31P HETCOR NMR elucidates the nature of acid sites in zeolite HZSM-5 probed with trimethylphosphine oxide

2019 ◽  
Vol 55 (84) ◽  
pp. 12635-12638 ◽  
Author(s):  
Carlos Bornes ◽  
Mariana Sardo ◽  
Zhi Lin ◽  
Jeffrey Amelse ◽  
Auguste Fernandes ◽  
...  
Keyword(s):  
Proton Transfer ◽  
Dft Calculations ◽  
Acid Sites ◽  
Transfer Mechanism ◽  
Structural Insight ◽  
Insight Into

2D 1H–31P NMR and DFT calculations extend the understanding of TMPO:Brønsted complexes formed at HZSM-5 zeolite surfaces, providing structural insight into the proton-transfer mechanism.

scholarly journals Computation provides chemical insight into the diverse hydride NMR chemical shifts of [Ru(NHC)4(L)H]0/+ species (NHC = N-heterocyclic carbene; L = vacant, H2, N2, CO, MeCN, O2, P4, SO2, H−, F− and Cl−) and their [Ru(R2PCH2CH2PR2)2(L)H]+ congeners

2017 ◽  
Vol 46 (9) ◽  
pp. 2861-2873 ◽  
Author(s):  
L. Jonas L. Häller ◽  
Elena Mas-Marzá ◽  
Mateusz K. Cybulski ◽  
Rajashekharayya A. Sanguramath ◽  
Stuart A. Macgregor ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Chemical Shifts ◽  
Nmr Chemical Shifts ◽  
Relativistic Dft ◽  
Ru Complexes ◽  
Insight Into

Relativistic DFT calculations rationalise hydride NMR chemical shifts in a range of Ru complexes.

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