Squaric acid (3,4-dihydroxy-3-cyclobutene-1,2-dione) is a four-membered ring oxocarbon compound. The complexes of squaric acid with some divalent and trivalent metals have been investigated. No molybdenum and tungsten...Squaric acid (3,4-dihydroxy-3-cyclobutene-1,2-dione) is a four-membered ring oxocarbon compound. The complexes of squaric acid with some divalent and trivalent metals have been investigated. No molybdenum and tungsten squarate complexes, however, have been reported. We have found that molybdenum and tungsten squarate complexes can be prepared under selected conditions. Three mmol of sodium tungstate dihydrate in 5 ml of water was mixed with展开更多
文摘Squaric acid (3,4-dihydroxy-3-cyclobutene-1,2-dione) is a four-membered ring oxocarbon compound. The complexes of squaric acid with some divalent and trivalent metals have been investigated. No molybdenum and tungsten squarate complexes, however, have been reported. We have found that molybdenum and tungsten squarate complexes can be prepared under selected conditions. Three mmol of sodium tungstate dihydrate in 5 ml of water was mixed with
