Heavy group 13 element complexes of N2O2- and N2O4-type dipyrrins exhibited efficient luminescent properties and cation recognition ability.

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Heterodinuclear group 13 element complexes of an N 4 O 6 -type dipyrrin cyclic dimer were synthesized by the stepwise reaction with boron and group 13 elements (Al, Ga, and [a] NMR Spectroscopy: 1 H and 13 C NMR spectra were recorded on a Bruker AVANCE III-400 or 600 spectrometers. Tetramethylsilane was used as an internal standard (δ = 0.00 ppm) for 1 H and 13 C NMR measurements.Single-Crystal X-ray Diffraction: Single-crystal X-ray diffraction measurements were performed using a Bruker APEX II ULTRA with Mo-K α radiation (graphite-monochromated, λ = 0.71073 Å) at 120 K. The collected diffraction images were processed by Bruker APEX2. The initial structure was solved using SHELXS-2013 [49] and refined using SHELXL-2016, [50] which were running on Yadokari-XG crystallographic software. [51] CCDC 1848533 (for [LBGa(CH 3 OH) 2 ]), and 1848537 (for [LBIn(CH 3 OH) 2 ]) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre.Mass Spectroscopy: MALDI-TOF mass data were recorded on an AB SCIEX TOF/TOF 5800 system. UV/Vis and Fluorescence Spectroscopy:UV-Vis spectra were recorded on a JASCO V-660 or V-670 spectrophotometer. Emission spectra were recorded on a JASCO FP-8600 fluorescence spectrophotometer. Absolute fluorescence quantum yields were determined with a Hamamatsu Photonics absolute PL quantum yield measurement system C9920-02. Solvents used for measurements were air-saturated.DFT Calculations: DFT calculations were carried out using the Spartan '16 software (Wavefunction, Inc. Irvine, CA). The geometry optimization of [LBGa(MeOH) 2 ] were performed at the B3LYP/6-31G(d) level. [52] Eur.

The Cover Feature shows the formation of heterodinuclear group 13 element complexes of N4O6‐type dipyrrin. The stepwise reaction of the planar N4O6‐type dipyrrin ligand with boron and group 13 elements (Al, Ga, and In) produced the first unsymmetrical twisted (pseudo‐figure‐of‐eight) macrocycle containing two different main group elements. More information can be found in the https://doi.org/10.1002/ejic.201801062