Welcome to the Kozlowski Group Homepage
University of Pennsylvania             Department of Chemistry

Lab Tips and Tricks

• Flash Chromatography - Paper outlining the process of running flash column chromatography


• NMR impurities - Common solvent impurities in ¹H and ¹³C NMR


• NMR impurties II - Recently updated to include more NMR solvents


• Solvent Properties - Important properties of common organic solvents


• Drying agents - How to choose a drying agent for a given solvent or desired compound (important!)


• Pressure-Temperature Chart - Chart for determining boiling points for low pressure distillation


• pKa Tables - The mother of all pKa tables, 40+ pages (from CRC's Handbook of Biochemistry and Molecular Biology)


• pKa's of Tertiary Amines - pKa's in both DMSO and water. Pretty handy. Table is about halfway down the paper
  
  
• Grignard Titration - Paper and lab notebook page that show how to titrate Grignard reagents

Helpful Links for Synthetic Chemists

• Not Voodoo - Tips and tricks for a number of common laboratory procedures (recrystallizations, etc)


• Al's Notebook - Experimental protocols for a large number of basic transformations


• ScienceCheck.org - New website that reviews published procedures


• Organic-chemistry.org - Website for overview of recent topics, reactions, etc.

Physical Data Tables and Calculators

• Organic Division Information - MASSIVE collection of data tables, includes almost everything you need to know, plus pages of syntheses, named reagents and reactions.


• Bond Strength Tables - From the Lectka group, a massive collection of bond strengths


• Abbreviations of Chemical Compounds - Searchable database of chemistry abbreviations


• The Azeotrope Bank - Choose two components and it will give you the azeotrope temperature (in Kelvin, for some reason)


• Boiling Point Calculator - Enter the STP boiling point and find the best pressure for the desired temperature


• Simple Hückel Molecular Orbitals - Gives energy diagrams for conjugated systems


• Phosphine Ligands - Cone angle, structure, and name of number of phosphine ligands

Chemistry Department Links

• Penn Chemistry Home


• Calendar of Events


• Chemistry Library


• Philadelphia Organic Chemists Club (POCC) Homepage


• Chemistry Department Business Office


• BEN Buys


• Chemical Waste Pickup Form


• X-Ray Crystallography Facility


• ACS Organic Division