The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Diiodo(1,5-cyclooctadiene)platinum(II), is researched, Molecular C8H12I2Pt, CAS is 12266-72-7, about Facile intramolecular silicon-carbon bond activation at Pt0 and PtII centers, the main research direction is platinum silyl diphosphine complex preparation oxidative addition reductive elimination; crystal structure platinum pincer silyl diphosphine complex; mol structure platinum pincer silyl diphosphine complex.COA of Formula: C8H12I2Pt.
The compound (2-Cy2PC6H4)2SiMe2 (1) reacted readily with Pt(PPh3)4 to undergo Si-C(sp3) bond cleavage and form the PtII species (Cy-PSiP)PtMe [2, Cy-PSiP = (2-Cy2PC6H4-κP)2SiMe–κSi]. The silane 1 also undergoes Si-C(sp3) bond activation with the PtII precursor [(Me2S)PtMe2]2 to generate 2. Two intermediate species were observed in situ during the reaction of 1 with [(Me2S)PtMe2]2. One intermediate was tentatively assigned as the bis(phosphino) PtII species (κ2-Cy-PSiP)PtMe2 (4), which was crystallog. characterized. A second intermediate (5) was tentatively assigned as the PtIV species (Cy-PSiP)PtMe3 resulting from Si-C(sp3) bond cleavage in 4. In an effort to prepare a (Cy-PSiP)PtIV species that may serve as a model for 5, complex 2 was reacted with MeI and I2, resp.; both reactions resulted in the quant. formation of the Pt(II) complex [(Cy-PSiP)PtI] (6), which could also be independently prepared by the reaction of (COD)PtI2 with (Cy-PSiP)H. The reaction of (Cy-PSiP)H with PtMe3I resulted in the formation of a PtIV species (7) as the major product. Complex 7 was tentatively assigned as (Cy-PSiP)PtMe2I, and undergoes relatively facile reductive elimination of ethane to form 6.
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Reference:
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