Syntheses, Crystal Structures, and Properties of Three Copper(II) Complexes Constructed by 4-(4,6-Bis(1H-pyrazol-1-yl)-1,3,5-triazin-2-yl)morpholine

The crystal structure of bis(isothiocyanato-κ1 N)-(methanol-κ1 O)-[2-morpholine-4-yl-4,6-di(pyrazol-1-yl)-1,3,5-triazine-κ3 N,N′,N′′] manganese(II), C16H18MnN10O2S2

C16H18MnN10O2S2, triclinic, P1̄ (no. 2), a = 7.8738(7) Å, b = 12.012(2) Å, c = 12.182(2) Å, α = 85.635(16)°, β = 81.077(14)°, γ = 74.540(14)°, V = 1096.3(3) Å3, Z = 2, R gt(F) = 0.0353, wR ref(F 2) = 0.0896, T = 96.5 K.

Coordinating Ability of Anions, Solvents, Amino Acids, and Gases towards Alkaline and Alkaline-Earth Elements, Transition Metals, and Lanthanides

After briefly reviewing the applications of the coordination ability indices proposed earlier for anions and solvents toward transition metals and lanthanides, a new analysis of crystal structures is applied now to a much larger number of coordinating species: anions (including those that are present in ionic solvents), solvents, amino acids, gases, and a sample of neutral ligands. The coordinating ability towards s-block elements is now also considered. The effect of several factors on the coordinating ability will be discussed: (a) the charge of an anion, (b) the chelating nature of anions and solvents, (c) the degree of protonation of oxo-anions, carboxylates and amino carboxylates, and (d) the substitution of hydrogen atoms by methyl groups in NH₃ , ethylenediamine, benzene, ethylene, pyridine and aldehydes. Hit parades of solvents and anions most commonly used in the areas of transition metal, s-block and lanthanide chemistry are deduced from the statistics of their presence in crystal structures.