Related Products of 16858-01-8, In heterogeneous catalysis, the catalyst is in a different phase from the reactants. At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 16858-01-8, name is Tris(2-pyridylmethyl)amine. In an article£¬Which mentioned a new discovery about 16858-01-8
Spin crossover in tetranuclear Fe(II) complexes, {[(tpma)Fe(mu-CN)]4}X4 (X = ClO4-, BF4-)
Two Fe(II) complexes, {[(tpma)Fe(mu-CN)]4}X4 (X = ClO4- (1a), BF4- (1b); tpma = tris(2-pyridylmethyl)amine), were prepared by reacting the {Fe(tpma)}2+ building block with (Bu4N)CN. The crystal structures of 1a and 1b feature a tetranuclear cation composed of cyanide-bridged Fe(II) ions, each capped with a tetradentate tpma ligand. The Fe4(mu-CN)4 core of the complex is strongly distorted, assuming a butterfly-like geometry. Both complexes exhibit gradual temperature-driven spin crossover (SCO) associated with the high-spin (HS) low-spin (LS) transition at two out of four metal centers. The evolution of HS and LS Fe(II) ions with temperature was followed by a combination of X-ray crystallography, magnetic measurements, and Moessbauer spectroscopy. Only the Fe(II) ions surrounded by six N atoms undergo the SCO. A comparison of the temperature-dependent SCO curves for the samples stored under solvent and the dried samples shows that the former exhibit a much more abrupt SCO. This finding was interpreted in terms of the increased structural disorder and decreased crystallinity caused by the loss of the interstitial solvent molecules in the dried samples.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.16858-01-8. In my other articles, you can also check out more blogs about 16858-01-8
Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI