Briefly surveys the main structural types of sulfur-nitrogen compounds, and describes syntheses, suitable as undergraduate experiments, which illustrate four of the five types of cyclic species. Laboratory procedures, background information, and discussion of results for these experiments are provided. (Author/JN)

Reviews the physical and chemical properties of polymers and the two major methods of polymer synthesis: addition (chain, chain-growth, or chain-reaction), and condensation (step-growth or step-reaction) polymerization. (JN)

Describes developments in the stereochemistry of coordination compounds. Includes chemical structures and chemical reactions of selected compounds. (JN)

A paramagnetic substance is attracted by a magnetic field with a force proportional to its magnetic susceptibility which is related to the number of unpaired electrons in the atoms. Data are used to establish oxidation states and bonding properties. Describes a simple setup to demonstrate the paramagnetism of common inorganic compounds. (DKM)

A single, didactic criterion for the description of all biological macromolecules is proposed. This criterion is applicable to globular, fibrous or mixed proteins, as well as to nucleic acids and lipids or polysaccharides. Specific examples are given for all except lipids and polysaccarides. (KR)

The computer systems available for molecular modeling are described, along with a discussion of a molecular modeling program created and supported by computational techniques for the first-semester general chemistry course. Various exercises are listed, which direct the learner from a beginner's course in software practice to more complex…

Presents the spectra of the flames of three gaseous mixtures, together with analyses of the rotational, vibrational, and electronic contributions to the spectra. (MLH)

Describes an experiment in which the beam of X-rays is simulated through the use of a laser as a monochromatic light source and the crystal is replaced by photographically prepared masks. A strong diffraction pattern as large as 20 cm. can be obtained. (GS)

Describes exercises using simple ball and stick models which students with no chemistry background can solve in the context of the original discovery. Examples include the tartaric acid and benzene problems. (GS)

Chemical bonding, for most simple complexes, is described in the Mulliken-Walsh Molecular Orbital (MO) theory. (CP)

The purpose of this paper is to show how symmetry selection rules can be used to determine whether certain of the electronic transitions exhibited by the title compounds are allowed or forbidden by symmetry. (Author/CP)

Reviews the phase transfer technique for conducting reactions between molecules with widely different solubility properties. (SL)

Discusses the perturbational molecular orbital (PMO) approach for qualitative prediction of reactivities and stabilities of organic molecules. (SL)

Describes a 12 hour minicourse in Huckel molecular orbital (HMO) theory presented as part of a senior level chemical bonding course. (SL)

Provides prize exam questions utilized by other teachers in the assessment of analytical techniques and molecular orbital theory. (SL)