Cyano-bridged mixed-valence copper polynuclear complex, and preparation method and application thereof

• Main Authors: HUANG WEI, YOU XIAOZENG, XU FENG
• Format: Patent
• Language: Chinese; English
• Published: 23.05.2012
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a cyano-bridged mixed-valence copper polynuclear complex, which is a cyano-ion bridged cuprous and cupric polynuclear complex taking 2,2'-bipyridyl or 1,10-phenanthroline as ligand. Positive ions of the polynuclear complex have the following structural general formula: the cyano-bridged mixed-valence copper polynuclear complex is a catalyst (dissolving in a little amount of acetonitrile), and hydrogen peroxide (w is 30 percent) is an oxidant for catalytically oxidizing benzaldehyde to form benzoic acid. The molar ratio of the benzaldehyde to a copper salt catalyst to the hydrogen peroxide is 200 to 1 to 400. After the mixture is stirred for 0.5 hour at the normal temperature and normal pressure, the HPLC characterization shows that the yield of the benzoic acid reaches 80.4 percent, while the yield is only 11.4 percent in the absence of a catalyst. Therefore, the cyano-bridged mixed-valence copper polynuclear complex prepared in the invention has good catalyticactivity in the process o