Dimer
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Valence bond representations with +ve charges on adjacent atoms? An odd titanium complex analysed.
Computational analysis of titanium complexes reveals that adjacent positively charged nitrogen atoms form stable bonds with unusually low interaction energies.
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New fused NiII porphyrin dimers were synthesized
Synthesis of fused-azepine- and 1H-azocine-bridged NiII porphyrin dimers via Pictet-Spengler cyclization and oxidative transformations, yielding NIR-absorbing and fluorescent complexes.

