Mechanism of the isomeric transformation of hydroxyhexamethylbenzolonium ions

1967 ◽  
Vol 16 (10) ◽  
pp. 2264-2264 ◽  
Author(s):  
V. G. Shubin ◽  
V. P. Chzhu ◽  
A. I. Rezvukin ◽  
A. A. Tabatskaya ◽  
V. A. Koptyug
Keyword(s):  
Isomeric Transformation

scholarly journals Atomically precise nanoclusters with reversible isomeric transformation for rotary nanomotors

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhaoxian Qin ◽  
Jiangwei Zhang ◽  
Chongqing Wan ◽  
Shuang Liu ◽  
Hadi Abroshan ◽  
...  
Keyword(s):  
Rational Design ◽  
Great Promise ◽  
Stimuli Responsive ◽  
Scanning Calorimetry ◽  
Isomeric Transformation ◽  
Wide Range ◽  
Intelligent Devices ◽  
Stimuli Response ◽  
Thermal Stimuli ◽  
Two Temperature

AbstractThermal-stimuli responsive nanomaterials hold great promise in designing multifunctional intelligent devices for a wide range of applications. In this work, a reversible isomeric transformation in an atomically precise nanocluster is reported. We show that biicosahedral [Au13Ag12(PPh3)10Cl8]SbF6 nanoclusters composed of two icosahedral Au7Ag6 units by sharing one common Au vertex can produce two temperature-responsive conformational isomers with complete reversibility, which forms the basis of a rotary nanomotor driven by temperature. Differential scanning calorimetry analysis on the reversible isomeric transformation demonstrates that the Gibbs free energy is the driving force for the transformation. This work offers a strategy for rational design and development of atomically precise nanomaterials via ligand tailoring and alloy engineering for a reversible stimuli-response behavior required for intelligent devices. The two temperature-driven, mutually convertible isomers of the nanoclusters open up an avenue to employ ultra-small nanoclusters (1 nm) for the design of thermal sensors and intelligent catalysts.

Metabolites: Reductive Dechlorination of DDT to DDD and Isomeric Transformation of o,p’-DDT to p,p’-DDT In Vivo

1964 ◽  
Vol 47 (6) ◽  
pp. 1129-1145 ◽  
Author(s):  
A K Klein ◽  
E P Laug ◽  
P R Datta ◽  
J O Watts ◽  
J T Chen
Keyword(s):  
Metabolic Pathway ◽  
Reductive Dechlorination ◽  
Isomeric Transformation ◽  
Fat Stores

Abstract Feeding p,p’-DDT and o,p’-DDT separately at a level of 50 ppm in the diet of rats causes reductive dechlorination of DDT to DDD in the liver. No DDD was found in the fat. DDE is not involved in the metabolic pathway. Feeding o,p’-DDT yields evidence of isomeric conversion to p,p’-DDT in the fat stores. The proportion of the p,p’-DDT found to the o,p’-isomer observed is approximately 7:1.

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