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  • copper
  • However, acetonitrile is not bound very strongly to the copper ion, thus the complex is a useful source of Cu(I). The cation was first reported in 1923 with a nitrate anion as a byproduct of the reduction of silver nitrate with a suspension of copper powder in acetonitrile. (wikipedia.org)
  • water
  • In a typical reaction, 4-chloro-3-nitro-2H-benzopyran-2-one 2, equimolar amounts of 3aminotriazole 3(a-b), respectively 2aminobenzothiazole 3(c-e) and a catalytic amount of triethylamine in acetonitrile were refluxed in a water bath for 1-16 h. (thefreedictionary.com)
  • Numbers
  • The ligand priority numbers are, applying the CIP rules: two chlorides of priority number 1 acetonitrile priority 2 pyridine priority 3 In the trans case the configuration index is 1 giving the name(SP-4-1)-(acetonitrile)dichlorido(pyridine)platinum(II). (wikipedia.org)