Synthesis of the Intermediate of a Catalytic Reaction: An NHC-Stabilized, First-Row Transition Metal Complex
Meng Zhou, Lawrence Technological University
The advanced synthesis laboratory course object allows students to study the synthesis, purification, and characterizations of a new diamagnetic organometallic complex of a first-row transition metal. The air-stable complex is stabilized by an N-heterocyclic carbene spectator ligand. It also bears an actor ligand and therefore, is potentially a reactive intermediate of a catalytic reaction. The synthesis of a reactive intermediate is the key to elucidate the mechanism of catalysis. The instructor chooses the first-row transition metal and the actor ligand based on his or her interests. The CURE starts from an NHC-ligated complex that does not bear this actor ligand but is otherwise similar. In our CURE, an anion ligand-replacement reaction was used to install the actor ligand, but an instructor may choose other approaches. The students will evaluate their results by standard spectroscopic analyses using UV-vis, FT-IR, and proton NMR (60 MHz or above) analysis.

The effects of grazing of water coliforms and antibiotic resistant microbes
Kristy Duran, Adams State University; Benita Brink, Adams State University

Polymer/Materials Structure-Property Relationship Investigations for General Chemistry Students
Zuleikha Kurji, Saint Marys College of California

Hydridotris(pyrazolyl)borate Ruthenium(II) Complexes Containing Phosphine or Phosphite Ligands
Jocelyn Lanorio, Illinois College
This course-based research will introduce students in an advanced inorganic chemistry course to air-sensitive and catalysis. Students will examine a series of ruthenium(II) hydridotris(pyrazolyl)borato complexes with phosphine or phosphite ligands using modern instrumentation and specialized equipment such as Schlenk line and drybox. The first two meetings should be devoted for literature search, familiarization of instrument operation, and selection of phosphine or phosphite ligand along with student submitting proposal that contains the safety protocols and handling of the chemicals involved in their selected system. Four meetings will then be designated for the synthesis and characterization of the complex. The students run catalytic and control reactions and determine the percent yield of the product using 1H NMR. The synthesis and catalytic conditions are modified from previously published research articles. This experiment combines complex synthesis, characterization, data analysis and data sharing.

General Chemistry II Water Quality labs at Adams State University
Christina Miller, Adams State University; Christopher Adams, Adams State University; Umesh Bhattarai, Adams State University
Adams State is conducting CURES in many of our lower divisional Biology, Chemistry, Geology and Math courses to increase the number and diversity of students who participate in undergraduate research. In General Chemistry II lab we will be replacing our normal labs concerning titration pH and ion solubility with CURES concerning water quality. These water samples will come from surrounding areas that have either been grazed or ungrazed to find out if there are differences in water quality between them. We will be using ion-specific probes to determine the presence and concentration of specific ions in the water samples. We will be using pH probes and titration to determine the acid concentration in water samples.