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Tuning the Aggregation of N ^ N ^ C Pt(II) Complexes by Varying the Aliphatic Side Chain and Auxiliary Halide Ligand: 1 H and 195 Pt NMR Investigation
Author(s) -
Evstigneev Maxim P.,
Lantushenko Anastasiya O.,
Yakovleva Yulia A.,
Suleymanova Alfiya F.,
Eltsov Oleg S.,
Kozhevnikov Valery N.
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201900821
Subject(s) - chemistry , halide , side chain , ligand (biochemistry) , nmr spectra database , dilution , crystallography , nuclear magnetic resonance spectroscopy , stereochemistry , spectral line , inorganic chemistry , organic chemistry , biochemistry , physics , receptor , astronomy , thermodynamics , polymer
A series of six tridentate cyclometallated N ^ N ^ C Pt(II) complexes with different halide auxiliary ligands and different aliphatic side chains have been prepared. All complexes show concentration‐dependent NMR spectra. Their self‐association was studied by a dilution method monitoring both the 1 H as well as 195 Pt nuclei. Both techniques show similar results validating that 195 Pt NMR is an important methodology to study self‐association of potentially any Pt complex regardless of the nature of the ligands. Experimental data allowed to predict the most probable geometry of the dimers and to get insight into the structural and thermodynamic specificity of the aggregation. The in‐depth analysis of the data suggests that the halide auxiliary ligand has no significant influence on self‐association while the effect of the aliphatic side chain depends on the length and the structure of the chain.