Synthesis and Structure of Formally Hexavalent Palladium Complexes

doi:10.1126/science.1067027

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Science 11 January 2002:
Vol. 295. no. 5553, pp. 308 - 310
DOI: 10.1126/science.1067027

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Synthesis and Structure of Formally Hexavalent Palladium Complexes

Wanzhi Chen, Shigeru Shimada,^* Masato Tanaka^*

Formally hexavalent palladium complexes have been isolated and structurally characterized for the first time. Thermal condensationreaction of three molecules of 1,2-C₆H₄(SiH₂)₂Pd^II(R₂PCH₂CH₂PR₂) (where R is defined as a methyl or ethyl) providedtrinuclear palladium complexes. Single-crystal x-ray analysisrevealed that each of the central palladium atoms of the complexesis ligated by six silicon atoms and is hexavalent, whereas theother palladium atoms are divalent.

National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
^* To whom correspondence should be addressed. E-mail: s-shimada{at}aist.go.jp (S.S); m.tanaka{at}aist.go.jp (M.T.)

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