Abstract
Complexes of bis(diphenylphosphino)methane dichalcogenides (dppmE2, E = O, S, Se) have been prepared for Co(II), Ni(II) and Cu(II) by combination with respective nitrate salts. These ligands are relatively unexplored for 1st row transition metals – with no existing reports of metal complexes for dppmSe2. All obtained complexes were paramagnetic precluding characterization by NMR spectroscopy. An array of methods have been employed to ascertain the structural and electronic forms of all obtained complexes as both tetrahedral and octahedral geometries, corresponding to systems with two or three ligands, respectively, are plausible. Additionally, Co(II) complexes, as d7 systems, could be found in either high spin or low spin configurations. All complexes have been characterized by magnetic susceptibility, IR spectroscopy, and mass spectrometry. Initial forays into computational modeling and X-ray crystallographic analysis are also underway.
College
College of Science & Engineering
Department
Chemistry
Campus
Winona
First Advisor/Mentor
Joseph West
Location
Ballroom - Kryzsko Commons
Start Date
4-18-2024 9:00 AM
End Date
4-18-2024 10:00 AM
Presentation Type
Poster Session
Format of Presentation or Performance
In-Person
Session
1a=9am-10am
Poster Number
39
Included in
Late 3d Transition Metal Complexes of Bis(diphenylphosphino)methane Dichalcogenide Ligands
Ballroom - Kryzsko Commons
Complexes of bis(diphenylphosphino)methane dichalcogenides (dppmE2, E = O, S, Se) have been prepared for Co(II), Ni(II) and Cu(II) by combination with respective nitrate salts. These ligands are relatively unexplored for 1st row transition metals – with no existing reports of metal complexes for dppmSe2. All obtained complexes were paramagnetic precluding characterization by NMR spectroscopy. An array of methods have been employed to ascertain the structural and electronic forms of all obtained complexes as both tetrahedral and octahedral geometries, corresponding to systems with two or three ligands, respectively, are plausible. Additionally, Co(II) complexes, as d7 systems, could be found in either high spin or low spin configurations. All complexes have been characterized by magnetic susceptibility, IR spectroscopy, and mass spectrometry. Initial forays into computational modeling and X-ray crystallographic analysis are also underway.
