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Organoplatinum chemistry is the chemistry of organometallic compounds containing a carbon to platinum chemical bond, and the study of platinum as a catalyst in organic reactions.〔''Nickel, Palladium and Platinum (Comprehensive Organometallic Chemistry II)'' R.J. Puddephatt (Editor) 2002 0080423167〕〔''Synthesis of Organometallic Compounds: A Practical Guide'' Sanshiro Komiya Ed. S. Komiya, M. Hurano 1997〕〔Jwu-Ting Chen "Platinum: Organometallic Chemistry" in Encyclopedia of Inorganic Chemistry 2006, John Wiley & Sons, New York. 〕 Organoplatinum compounds exist in oxidation state 0 to IV, with oxidation state II most abundant. The general order in bond strength is Pt-C (sp) > Pt-O > Pt-N > Pt-C (sp3). Organoplatinum and organopalladium chemistry are similar, but organoplatinum compounds are more stable and therefore less useful as catalysts. ==Organoplatinum(0)== Most organoplatinum(0) compounds contain alkene and alkyne ligands. Carbonyl complexes are rare, and the analogue of Ni(CO)4 is elusive. The alkene and alkyne ligands serve as two-electron donors, for example in the complexes (PPh3)2Pt(C2H4) and (PPh3)2Pt(C2Ph2). The ethylene ligand in (PPh3)2Pt(C2H4) is labile and exchanges with alkynes and electrophilic alkenes, even C60 a fullerene. A general synthetic route to (PPh3)2Pt(un) (un = alkene, alkyne) is reduction of potassium tetrachloroplatinate with ethanolic potassium hydroxide or hydrazine in presence of a phosphine ligand such as triphenylphosphine and the alkene or alkyne. Such reactions proceed via the intermediacy of ''cis''-dichlorobis(triphenylphosphine)platinum(II). Nitrogen-based ligands do not often support the formation of platinum complexes of alkenes and alkynes. Zerovalent organoplatinum complexes lacking phosphine ligands are often prepared via PtCl2(COD). :Li2C8H8 + PtCl2(COD) + 3 C7H10 → () + 2 LiCl + C8H8 + C8H12 :Pt(C7H10)3 + 2 COD → Pt(COD)2 + 3 C7H10 where C7H10 is norbornene. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Organoplatinum」の詳細全文を読む スポンサード リンク
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