Chemistry is traditionally divided into organic and inorganic chemistry. Product Details of 72287-26-4, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 72287-26-4
Synthesis, structural characterization and anion binding studies of palladium macrocycles with hydrogen-bonding ligands
The reactions between [Pd(P-P)(OTf)2] (where P-P = dppp or dppf) and two different bipyridyl ligands (L1 = 1,3-bis(4-pyridylmethyl) urea and L2 = 1,3- bis(pyridinylmethyl)benzenedicarboxamide) containing hydrogen-bonding units have been studied. The X-ray crystal structures of three of these assemblies have been solved showing them to be the [2 + 2] metallo-macrocycles [Pd(P-P)(Ln)]2(OTf) 4 [P-P = dppp, n = 1, (1); P-P = dppp, n = 2, (2); P-P = dppf, n = 1, (3)]. To confirm whether the dimeric assembly of one of these species (1) is retained in solution, several investigations have been carried out. 1H NMR studies in DMSO and high resolution ESI mass spectrometry have shown that 1 is in equilibrium with a larger [3 + 3] metallo-macrocycle. The equilibrium between these two species can be modified by changing the temperature, concentration or solvent. Also, addition of certain anions (e.g. [H2PO4]-) to the mixture shifts the equilibrium favoring the formation of the [2 + 2] metallo-macrocycle over the [3 + 3] (initially present in a larger proportion). The Royal Society of Chemistry.
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Reference£º
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method