1H, 13C, 15N and 195Pt NMR studies of Au(III) and Pt(II) chloride organometallics with 2-phenylpyridine.
(1)H, (13)C, (15)N and (195)Pt NMR studies of gold(III) and platinum(II) chloride organometallics with N(1),C(2')-chelated, deprotonated 2-phenylpyridine (2ppy*) of the formulae [Au(2ppy*)Cl(2)], trans(N,N)-[Pt(2ppy*)(2ppy)Cl] and trans(S,N)-[Pt(2ppy*)(DMSO-d(6))Cl] (formed in situ upon dissolving [Pt(2ppy*)(micro-Cl)](2) in DMSO-d(6)) were performed. All signals were unambiguously assigned by HMBC/HSQC methods and the respective (1)H, (13)C and (15)N coordination shifts (i.e. differences between chemical shifts of the same atom in the complex and ligand molecules: Delta(1H)(coord) = delta(1H)(complex) - delta(1H)(ligand), Delta(13C)(coord) = delta(13C)(complex) - delta(13C)(ligand), Delta(15N)(coord) = delta(15N)(complex) - delta(15N)(ligand)), as well as (195)Pt chemical shifts and (1)H-(195)Pt coupling constants discussed in relation to the known molecular structures. Characteristic deshielding of nitrogen-adjacent H(6) protons and metallated C(2') atoms as well as significant shielding of coordinated N(1) nitrogens is discussed in respect to a large set of literature NMR data available for related cyclometallated compounds.
Pazderski
Leszek
L
Faculty of Chemistry, Nicholas Copernicus University, Gagarina 7, PL-87100, Toruń, Poland. leszekp@chem.uni.torun.pl
Pawlak
Tomasz
T
Sitkowski
Jerzy
J
Kozerski
Lech
L
Szłyk
Edward
E
D002247:Carbon Isotopes / Q000032:analysis / Q000737:chemistry; D017612:Gold Compounds / Q000032:analysis / Q000737:chemistry*; D006859:Hydrogen / Q000032:analysis / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D009587:Nitrogen Isotopes / Q000032:analysis / Q000737:chemistry; D010984:Platinum / Q000032:analysis / Q000737:chemistry*; D017671:Platinum Compounds / Q000032:analysis / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*
D002247:Carbon Isotopes; D017612:Gold Compounds; D009587:Nitrogen Isotopes; D017671:Platinum Compounds; D011725:Pyridines; C038016:gold chloride; C030173:platinum chloride; C058324:2-phenylpyridine; D010984:Platinum; D006859:Hydrogen