Quadruple bond Quadruple bond A quadruple bond is a type of chemical bond between two atoms involving eight electrons. This bond is an extension of the more familiar types double bonds and triple bonds. Stable quadruple bonds are most common among the transition metals in the middle of the d-block, such as rhenium, tungsten, molybdenum and chromium. Typically the ligands that support quadruple bonds are π-donors, not π-acceptors. Chromium(II) acetate, Cr("μ"-OCCH)(HO), was the first chemical compound containing a quadruple bond to be synthesized. It was described in 1844 by E. Peligot, although its distinctive bonding was not recognized for more than a
The Pickwick Papers (1952 film) The Pickwick Papers (1952 film) The Pickwick Papers is a 1952 British black-and-white film based on the Charles Dickens classic. Both screenplay and direction were by Noel Langley. The film premiered at the Gaumont Cinema at Haymarket in London on 14 November 1952. In 1954, the Soviet Union paid £10,000 for the distribution rights, and it became the first British film to be shown in the Soviet Union after World War II, premiering on 29 July 1954 in a number of cities with a dubbed soundtrack. The film was followed a month later by a Russian reprint of Dickens's book,