Re-Crystallisation,
Where Did it go?
Why wasn't the first crystallisation good enough? and will rapid evaporation
of the filtrate help?
AR, UK |
pp 157-160 |
Contaminant removal. A comparison
of traditional and modern techniques.
Preparative TLC, HPLC, flash chromatography or 15 minutes with Corel
Draw. The use of 111-trichloroethane white particle suspensions coupled
with photo-electrostatic clean up, was a renowned and highly developed
technique, which should be more correctly regarded as a "modern technique
of it's time". The method has declined in popularity with the demise of
the chart recorder and increased use of modern computer orientated data
systems. With the advent of electronic submissions with embedded graphics
files, the direct manipulation of vector files is by far more acceptable
to today's graduate.
AR, UK |
pp 161-164 |
Shear Behaviour
of Greases.
The shear behaviour of various greases, as thin films trapped between
a B19 Quickfit Liebig condenser and a matching unsupported flask, has been
studied. Results are presented as tetrahedral stereoviews with Time-Thickness-Load-Temperature
axes (red & green glasses provided).
Dr K. UK |
pp 165-166 |
The Inside Alkoxide Effect:
Arse or What?
A comparative review of a little known and entirely useless, if not
wholly fictitious, phenomenon of synthetic organic chemistry.
JFC and IDB, UK |
pp 167-170 |
Crud or Clag?
A definitive classification of reaction products in the first 10 cm
of a GC column during "routine" analysis of simple mixtures of GC-amenable
compounds.
RPP and IDB, UK |
pp 171-174 |
Mystery Contamination when
Characterising Products by MS.
An essential study addressing the problem of 'pure by NMR' products
becoming mysteriously impure when analysed by hyphenated MS techniques.
IDB, UK |
pp 175-178 |
Disposal
of Unlabelled Chemicals.
A guide to the identification, correct labeling and disposal of old
unwanted chemicals. Comes with examples of 'non-chlorinated waste' labels
and details of which sink to use.
JFC and IDB, UK |
pp 179-182 |
Optimisation of Experimental
Procedures.
Contains tips on how to pad out a PhD project by doing exactly the
same thing at many different temperatures.
JFC, UK |
pp 183-184 |
How to optimise
the yield of phthalates in organic synthesis.
PM, UK |
pp 185-186 |
Resistance of Amorphous Solids
to Thermal Stress.
A comprehensive review of commercially available glassware subject
to rapid cooling. The modern range of labware displays a wide distribution
of resilience to large rapid changes in temperature, depending on structure
and composition. The performance of a selection of glass- container products
and brands immersed CO2(s) and N2(l)
is presented.
MF, TX, USA |
pp 187-190 |
The Effects
of Stirring Direction on Enantio- and Diastereoselectivity.
The effects of stirring direction were investigated in the stereoselective
syntheses of several small molecules, employing both clockwise and counterclockwise
magnetic and mechanical stirring.
MM, OH, USA |
pp 191-194
Part I |
