Patent ID: 8765952

Claim:
A metal complex containing a cation represented by the formula (C1) [M II ) 2 (M I ) 2 (L C ) 2 (L B ) 4 ] 2+ (C1) in the formula (C1), M II is Pt II or Pd II , M I is H + , Au I , Ag I , Cu I , Hg I , Tl I or Pb I , L C is a compound represented by any of the formula (L C -1)-the formula (L C -5), and L B is a monovalent anion represented by the formula (L B -1), in the formula (L C -1)-the formula (L C -5), R 1 -R 34 are each independently a hydrogen atom, a halogen atom, an alkyl group optionally having substituent(s), or an aryl group optionally having substituent(s), or one or plural sets of the adjacent groups from R 1 -R 34 form a hydrocarbon ring optionally having substituent(s) or a heterocyclic ring optionally having substituent(s), in the formula (L B -1), X 1 is an alkyl group optionally having substituent(s), and X 2 and X 3 are each independently a hydrogen atom, a halogen atom, an alkyl group optionally having substituent(s), or an aryl group optionally having substituent(s).