Role of steric hindrance of methyl groups on the rates of reduction of N-methyl substituted ethylenediamine complexes of platinum(IV)

Polyhedron ◽  
1992 ◽  
Vol 11 (17) ◽  
pp. 2187-2193 ◽  
Author(s):  
Arnaldo Peloso
Keyword(s):  
Steric Hindrance ◽  
Methyl Groups

The Rates and Products of Addition of 4-Chlorobenzenesulfenyl Chloride to a Series of Side Chain Methyl Substituted Styrenes

1974 ◽  
Vol 52 (9) ◽  
pp. 1807-1812 ◽  
Author(s):  
George H. Schmid ◽  
Dennis G. Garratt
Keyword(s):  
Steric Hindrance ◽  
Side Chain ◽  
Methyl Groups ◽  
Methyl Group

The rates of addition and the product compositions have been determined for the addition of 4-chlorobenzenesulfenyl chloride to a series of seven side chain methyl substituted styrenes in 1,1,2,2-tetrachloroethane at 25°. Unlike the addition to the corresponding series of methylated ethylenes, the effect of the methyl groups is not cumulative. The effect of the methyl groups depends upon whether or not the β-methyl group is cis to the phenyl. When it is cis, the rate of addition is decreased compared to styrene and substitution of additional methyl groups has only a small effect on the rate of addition. In compounds lacking a cis-β-methyl group the rate of addition more closely resembles that for addition to the methylated ethylenes. Steric hindrance between the cis-methyl and phenyl groups is believed to be the cause of this difference in behavior between the ethylene and styrene series.

Role of Steric Hindrance in the Crystal Packing of Z′ = 4 Superstructure of Trimethyltin Hydroxide

2018 ◽  
Vol 18 (3) ◽  
pp. 1394-1400 ◽  
Author(s):  
S. Dey ◽  
A. Schönleber ◽  
S. Mondal ◽  
S. I. Ali ◽  
S. van Smaalen
Keyword(s):  
Steric Hindrance ◽  
Crystal Packing

Role of the Ring Methyl Groups in 2′,3′-Benzoabscisic Acid Analogues

2019 ◽  
Vol 67 (17) ◽  
pp. 4995-5007 ◽  
Author(s):  
Chuan Wan ◽  
Qilin Hong ◽  
Xueqin Zhang ◽  
Yuejuan Zeng ◽  
Dongyan Yang ◽  
...  
Keyword(s):  
Methyl Groups

The role of alkoxy radicals in the heterogeneous reaction of two structural isomers of dimethylsuccinic acid

2015 ◽  
Vol 17 (38) ◽  
pp. 25309-25321 ◽  
Author(s):  
Chiu Tung Cheng ◽  
Man Nin Chan ◽  
Kevin R. Wilson
Keyword(s):  
Molecular Weight ◽  
Hydroxyl Radicals ◽  
Heterogeneous Reaction ◽  
Methyl Groups ◽  
Structural Isomers ◽  
Alkoxy Radicals ◽  
Weight Growth ◽  
Bond Scission

The heterogeneous reaction of hydroxyl radicals with two isomers of dimethylsuccinic acid is used to explore how the location of branched methyl groups controls C–C bond scission and molecular weight growth reactions.

The Role of Methyl Groups in the Formation of Hydrogen Bond in DMSO−Methanol Mixtures

2006 ◽  
Vol 128 (5) ◽  
pp. 1438-1439 ◽  
Author(s):  
Qingzhong Li ◽  
Guoshi Wu ◽  
Zhiwu Yu
Keyword(s):  
Hydrogen Bond ◽  
Methyl Groups

scholarly journals The role of steric hindrance in the intramolecular oxidative aromatic coupling of pyrrolo[3,2-b]pyrroles

2016 ◽  
Vol 52 (77) ◽  
pp. 11539-11542 ◽  
Author(s):  
Maciej Krzeszewski ◽  
Paweł Świder ◽  
Łukasz Dobrzycki ◽  
Michał K. Cyrański ◽  
Witold Danikiewicz ◽  
...  
Keyword(s):  
Carbon Atom ◽  
Steric Hindrance ◽  
Sterically Hindered

Sterically hindered tetraaryl-pyrrolo[3,2-b]pyrroles undergo oxidative aromatic coupling, forming a fluorene scaffold linked via a spiro carbon atom with a novel π-conjugated scaffold.

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