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A novel mixed-valent Ag(I)/Ag(0) T(h)-Ag(34) cage was obtained by a one-pot ultrasonic reaction. In the shell of the cage, CO(3)(2-) anion is derived from atmospheric CO(2) and adopts a rare μ(6) bridging mode to link the Ag(I) ions. In the core of the cage, an unprecedented neutral metal cluster with six zero-valent silver atoms is encapsulated.
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Sun et al. (2010) studied this question.
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