Amidate-bridged platinum

C. Oxidation of Organic Substances Catalyzed by Amidate-Bridged Platinum(III) Complexes... 

II. Syntheses and Structures of Platinum-Blues and Related Amidate-Bridge Platinum"1 Complexes... 

Platinum-Blues and the Related Amidate-Bridged Platinum Compounds... 

Other metal-centered catalysts that have been studied include (te)strapped chiral porphyrins derived from L-proline, which can induce modest (< 30%) enantioselectivity <02EJIOC1666>. Supported amidate-bridged platinum blue complexes, which have not yet been applied to chiral epoxidation, but which show promise of utilizing molecular oxygen as the terminal oxidant, have... 

Structures and Reactivities of Platinum-Blues and the Related Amidate-Bridged Platinum " Compounds Kazuko Matsumoto and Ken Sakai INDEX... 

With respect to polymer-bound platinum catalysts, a dinuclear amidate-bridged platinum(III) complex was supported on pol3winylpyridine [95] and tested as catalyst in the epoxidation of cyclohexene and styrene by isobutyralde-hyde/O2. Its catalytic activity was found to be significantly lower compared to the same complex immobilized on inorganic supports. 

W. Chen, J. Yamada, K. Matsumoto, Catalytic olefin epoxidation with molecular oxygen over supported amidate-bridged platinum blue complexes, Synth. Commun. 32 (2002) 17. 

STRUCTURES AND REACTIVITIES OF PLATINUM-BLUES AND THE RELATED AMIDATE-BRIDGED PLATINUM111 COMPOUNDS... 

Pt(2.5 + ), and Pt(3.0+). These oxidation states correspond to their formal oxidation states of Pt(II)2, Pt(II)3Pt(III), Pt(II)2Pt(III)2 and Pt(III)2, respectively. To date the Pt(2.75+) state corresponding to Pt(II)Pt(III)3 has never been found. In addition to this classification, the structures can also be grouped according to the orientation of the two bridging amidate ligands within a dimeric unit head-to-head (HH) and head-to-tail (HT) are known to Pt(II)2 and Pt(III)2 compounds (52, 53, 94, 95) (see A-l, A-2, D-l, and D-3 in Fig. 5). However, only the HH isomers afford a dimer of dimers, leading to the tetrapla-tinum chain structure of platinum-blues. On the other hand, the HT... 

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