Tunability in Heterobimetallic Complexes Featuring an Acyclic "Tiara" Polyether Motif.

Both cyclic "crown" and acyclic "tiara" polyethers have been recognized as useful for the binding of metal cations and enabling the assembly of multimetallic complexes. However, the properties of heterobimetallic complexes built upon acyclic polyethers have received less attention than they deserve. Here, the synthesis and characterization of a family of eight redox-active heterobimetallic complexes that pair a nickel center with secondary redox-inactive cations (K, Na, Li, Sr, Ca, Zn, La, and Lu) bound in acyclic polyether "tiara" moieties are reported.

High Yielding, One-Pot Synthesis of Bis(1-indazol-1-yl)methane Catalyzed by 3-Metal Salts.

Synthetic access to poly(indazolyl)methanes has limited their study despite their structural similarity to the highly investigated chelating poly(pyrazolyl)methanes and their potentially important indazole moiety. Herein is presented a high yielding, one-pot synthesis for the 3-metal catalyzed formation of bis(1-indazol-1-yl)methane from 1-indazole utilizing dimethylsulfoxide as the methylene source. Complete characterization of bis(1-indazol-1-yl)methane is given with H and C NMR, UV/Vis, FTIR, high resolution mass spectrometry and for the first time, single crystal X-ray diffraction.