Late, 3d transition metal complexes of bis(diphenylphosphino)methane dichalcogenide ligands
Presenter(s)
Connor Lehner
Abstract
Complexes of bis(diphenylphosphino)methane dichalcogenides (dppmE2, E=O, S, Se) have been prepared for CoII, NiII, and CuII 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 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, all octahedral CoII complexes, as d7 systems, could potentially be found in either high spin or low spin configurations. All complexes have been characterized by magnetic susceptibility, IR spectroscopy, mass spectrometry, and UV-Vis spectroscopy. Initial analysis by X-ray crystallography is also underway.
College
College of Science & Engineering
Department
Chemistry
Campus
Winona
First Advisor/Mentor
Joseph K. West
Start Date
4-24-2025 1:00 PM
End Date
4-24-2025 2:00 PM
Presentation Type
Poster Session
Format of Presentation or Performance
In-Person
Session
2a=1pm-2pm
Poster Number
31
Late, 3d transition metal complexes of bis(diphenylphosphino)methane dichalcogenide ligands
Complexes of bis(diphenylphosphino)methane dichalcogenides (dppmE2, E=O, S, Se) have been prepared for CoII, NiII, and CuII 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 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, all octahedral CoII complexes, as d7 systems, could potentially be found in either high spin or low spin configurations. All complexes have been characterized by magnetic susceptibility, IR spectroscopy, mass spectrometry, and UV-Vis spectroscopy. Initial analysis by X-ray crystallography is also underway.
Comments
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