Syntheses of tris(pyrazolyl)methane ligands and {[tris(pyrazolyl)methane]Mn(CO)3}SO3CF3 complexes: comparison of ligand donor properties

An Extremely Bulky Tris(pyrazolyl)methanide: A Tridentate Ligand for the Synthesis of Heteroleptic Magnesium(II) and Ytterbium(II) Alkyl, Hydride, and Iodide Complexes

“…This synthetic route was similar to those reported for less bulky tris(pyrazolyl)methanes. [10] The generation of pure 1 required washing of the crude product with diethyl ether. Interestingly, concentration of these washings led to crystallization of a regioisomer of 1, that is, HC(3-Ad-5-Mepz) 2 (3-Me-5-Adpz) (2), in low yield.…”

Functionalised Tris(pyrazolyl)methane Ligands and Re(CO)3 Complexes Thereof

“…The tris(3-R-pyrazolyl)methanes (R = H, Ph, tert.-Bu) [29] , 3,3,3-tris(pyrazolyl)propane [50] and [Re(H 2 O) 3 (CO) 3 ]Br [44] were prepared according to published procedures. The preparation of the ligands was carried out in Schlenk tubes under an atmosphere of dry nitrogen using anhydrous solvents purified according to standard procedures.…”

“…[29] These Tpm ligands easily form Re(CO) 3 complexes. [30][31][32] This is interesting for therapeutic as well as diagnostic purposes as rhenium has two isotopes with favourable β-emitting properties ( 188 Re, t ½ = 16.9 h, E β = 2.1 MeV; 186 Re, t ½ = 3.78 d, E β = 1.07 MeV, E γ = 137 keV) and additionally, the Re(CO) 3 core resembles the diagnostically important 99m Tc(CO) 3 core.…”

“…Only a few functionalized tris(pyrazolyl)methane ligands bearing groups for further chemical ligation are known, the most prominent being the tris(pyrazolyl)ethanol developed by Reger. [29,39] Herein we report on the synthesis and characterization of the new tripodal nitrogen ligand 3,3,3-tris(pyrazolyl)propanol and derivatives thereof. The reactivity of the additional functional group has been explored and the structure of Re(CO) 3 complexes of some of the new ligands is described.…”

C-Homoscorpionate Oxidation Catalysts—Electrochemical and Catalytic Activity

“…The latter are considerably less well studied than the analogous borate species [3]. However, in the last two decades, mainly driven by improved syntheses [9,10], coordination behavior and physicochemical properties of poly(pyrazol-1-yl)methanes have attracted considerable interest [5][6][7][8] in order to perform the precise tuning of target scorpionates towards a desired function [3,6,7]. Applications of this highly versatile class of metal compounds range from organic synthesis, analytical, bio-inorganic or catalytic chemistry to material sciences [3,[6][7][8][11][12][13][14][15][16][17][18].…”