title: 1H, 13C, 15N NMR coordination shifts in Fe(II), Ru(II) and Os(II) cationic complexes with 2,2':6',2″-terpyridine.
abstract: (1)H, (13)C and (15)N NMR studies of iron(II), ruthenium(II) and osmium(II) bis-chelated cationic complexes with 2,2':6',2″-terpyridine ([M(terpy)(2) ](2+) ; M = Fe, Ru, Os) were performed. Significant shielding of nitrogen-adjacent H(6) and deshielding of H(3'), H(4') protons were observed, both effects being mostly expressed for Fe(II) compounds. The metal-bonded nitrogens were shielded, this effect being much larger for the outer N(1), N(1″) than the inner N(1') atoms, and enhanced in the Fe(II) → Ru(II) → Os(II) series.
authors.affiliation: Faculty of Chemistry, Nicholas Copernicus University, Gagarina 7, PL-87100 Toruń, Poland. leszekp@chem.umk.pl
authors.forename: Leszek
authors.initials: L
authors.lastname: Pazderski
authors.forename: Tomasz
authors.initials: T
authors.lastname: Pawlak
authors.forename: Jerzy
authors.initials: J
authors.lastname: Sitkowski
authors.forename: Lech
authors.initials: L
authors.lastname: Kozerski
authors.forename: Edward
authors.initials: E
authors.lastname: Szlyk
mesh_terms: D002412:Cations / Q000737:chemistry; D056831:Coordination Complexes / Q000032:analysis* / Q000737:chemistry; D018360:Crystallography, X-Ray; D005296:Ferrous Compounds / Q000032:analysis / Q000737:chemistry; D007501:Iron / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry; D019906:Nuclear Magnetic Resonance, Biomolecular; D009992:Osmium / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D011522:Protons; D011725:Pyridines / Q000032:analysis* / Q000737:chemistry; D012428:Ruthenium / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism
chemical_list: D002412:Cations; D056831:Coordination Complexes; D005296:Ferrous Compounds; D011522:Protons; D011725:Pyridines; D009992:Osmium; D012428:Ruthenium; D007501:Iron; D009584:Nitrogen