Cation-Induced Dimerization of Heteroleptic Crown-Substituted Trisphthalocyaninates as Revealed by X-ray Diffraction and NMR Spectroscopy.
Alexander G MartynovMarina A PolovkovaGeorgy S BerezhnoyAnna A SinelshchikovaFedor M DolgushinKirill P BirinGayane A KirakosyanYulia G GorbunovaAslan Yu TsivadzePublished in: Inorganic chemistry (2020)
We report comprehensive X-ray diffraction and NMR studies of potassium-induced dimerization of heteroleptic triple-decker crown-phthalocyaninates [(15C5)4Pc]M(Pc)M(Pc) (1M, M = Y and Tb). Characterization of the crystalline dimer 2(1Y)·4KBPh4·12CH3CN·10CHCl3 gave the first structural evidence of the formation of a six-decker structure with four rare earth metal ions perfectly aligned near the symmetry axis. NMR studies of soluble supramolecular dimers 2(1M)·4KOAc provided a spectral-structural model that allowed us to assign the NMR spectra of related complexes with paramagnetic lanthanides and to further evaluate their structure and long-range interaction between the Ln(III) centers in multinuclear tetrapyrrolic complexes. The obtained results are promising for elaboration of new supramolecular magnetic materials.
Keyphrases
- high resolution
- magnetic resonance
- high glucose
- solid state
- diabetic rats
- electron microscopy
- drug induced
- case control
- mycobacterium tuberculosis
- water soluble
- oxidative stress
- molecular docking
- magnetic resonance imaging
- computed tomography
- mass spectrometry
- lymph node metastasis
- optical coherence tomography
- energy transfer
- contrast enhanced
- molecular dynamics simulations
- stress induced
- liquid chromatography