Transition metal carrying an intermetallic compound, a supported metal catalyst, and an ammonia pr

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An electride, which is more stable and can be more easily obtained, is provided or is made available, and as a result, a catalyst particularly useful for chemical synthesis, in which the electride is particularly used, is provided. A transition metal-supported intermetallic compound having a transition metal supported on an intermetallic compound represented by the following formula (1) : €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒA 5 X 3 ...€ƒ€ƒ€ƒ€ƒ€ƒ(1) wherein A represents a rare earth element, and X represents Si or Ge.