Synthesis and Application of C-Phenylcalix[4]resorcinarene in Adsorption of Cr(III) and Pb(II) Budiana I Gusti M. Ngurah*1, Jumina2, and Chairil Anwar2 1Department of Chemistry, Faculty o...
Read ItSynthesis and Application of C-Phenylcalix[4]resorcinarene in Adsorption of Cr(III) and Pb(II) Budiana I Gusti M. Ngurah*1, Jumina2, and Chairil Anwar2 1Department of Chemistry, Faculty o...
Read ItHere is another exploration of simple chemical concepts using crystal structures. Consider a simple diene: how does the central C-C bond length respond to the torsion angle between the two C=C bond...
Read ItPreviously, I explored deviation from ideal tetrahedral arrangements of four carbon ligands around a central (sp 3) carbon using crystal structures. Now it is the turn of digonal (sp 1) and trigona...
Read ItThe phenomenon of bond stretch isomerism, two isomers of a compound differing predominantly in just one bond length, is one of those chemical concepts that wax and occasionally wane. Here I explore...
Read ItDerek Lowe has a recent post entitled " Another Funny-Looking Structure Comes Through". He cites a recent medchem article[1] in which the following acetal sub-structure appears in a promising drug ...
Read ItThis question was posted on the CCL (computational chemistry list) by John McKelvey. Here, I give an answer in the form of a search of the CSD (crystal structure database). I was not sure if the qu...
Read ItThe original strategic objective of my PhD researches in 1972-74 was to explore how primary kinetic hydrogen isotope effects might be influenced by the underlying structures of the transition state...
Read ItEarlier I explored models for the heteroaromatic electrophilic protiodecarboxylation of an 3-substituted indole, focusing on the role of water as the proton transfer and delivery agent. Next, came ...
Read ItThis is the third and final study deriving from my Ph.D.[1]. The first two topics dealt with the mechanism of heteroaromatic electrophilic attack using either a diazonium cation or a proton as elec...
Read ItAnother mechanistic study we started in 1972[1] is here 40+ years on subjected to quantum mechanical scrutiny. The kinetics are again complex, the mechanism involving protonation‡ of the...
Read ItThe BBC TV quiz series Mastermind was first broadcast in the UK in 1972, the same time I was starting to investigate the mechanism of diazocoupling to substituted indoles as part of my Ph.D. resear...
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