Triphenylmethylphosphonium Trichloro (caffeine) platinum (II), [P(C6H5)3(CH3)][PtCl3(caffeine)], Structure and Anticancer Activity

Roger E. Cramer; Douglas M. Ho; William Van Doorne; James A. Ibers; Ted Norton; Midori Kashiwagi

doi:10.1021/ic50222a018

Triphenylmethylphosphonium Trichloro (caffeine) platinum (II), [P(C6H5)3(CH3)][PtCl3(caffeine)], Structure and Anticancer Activity

Roger E. Cramer, Douglas M. Ho, William Van Doorne, James A. Ibers, Ted Norton, Midori Kashiwagi

Chemistry

Research output: Contribution to journal › Article › peer-review

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Abstract

The salt [PPh3Me] [PtCl3(caffeine)] has been synthesized and its structure determined. It crystallizes in the triclinic space group Ci1-P1 with cell dimensions at -162 °C of a = 12.332 (5) Å, b = 13.230 (6) Å, c = 8.712 (4) Å, α = 97.07 (2)°, β = 99.78 (4)°, γ = 93.63 (1)°, V = 1385 Å3, and Z = 2. The structure was solved by heavy-atom methods, and the 217 variables were refined by least-squares techniques to a final R index on F of 0.038 for the 5670 data. The structure consists of discrete [PPh3Me]+ cations and [PtCl3(caffeine)]- anions. The square-planar Pt(II) ion is bound to atom N(9) of the caffeine ligand at a distance of 2.021 (5) Å. The related salt K[PtCl3(caffeine)] has significant anticancer activity.

Original language	English (US)
Pages (from-to)	2457-2461
Number of pages	5
Journal	Inorganic chemistry
Volume	20
Issue number	8
DOIs	https://doi.org/10.1021/ic50222a018
State	Published - Aug 1981

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Physical and Theoretical Chemistry
Inorganic Chemistry

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title = "Triphenylmethylphosphonium Trichloro (caffeine) platinum (II), [P(C6H5)3(CH3)][PtCl3(caffeine)], Structure and Anticancer Activity",

abstract = "The salt [PPh3Me] [PtCl3(caffeine)] has been synthesized and its structure determined. It crystallizes in the triclinic space group Ci1-P1 with cell dimensions at -162 °C of a = 12.332 (5) {\AA}, b = 13.230 (6) {\AA}, c = 8.712 (4) {\AA}, α = 97.07 (2)°, β = 99.78 (4)°, γ = 93.63 (1)°, V = 1385 {\AA}3, and Z = 2. The structure was solved by heavy-atom methods, and the 217 variables were refined by least-squares techniques to a final R index on F of 0.038 for the 5670 data. The structure consists of discrete [PPh3Me]+ cations and [PtCl3(caffeine)]- anions. The square-planar Pt(II) ion is bound to atom N(9) of the caffeine ligand at a distance of 2.021 (5) {\AA}. The related salt K[PtCl3(caffeine)] has significant anticancer activity.",

author = "Cramer, {Roger E.} and Ho, {Douglas M.} and {Van Doorne}, William and Ibers, {James A.} and Ted Norton and Midori Kashiwagi",

year = "1981",

month = aug,

doi = "10.1021/ic50222a018",

language = "English (US)",

volume = "20",

pages = "2457--2461",

journal = "Inorganic chemistry",

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T1 - Triphenylmethylphosphonium Trichloro (caffeine) platinum (II), [P(C6H5)3(CH3)][PtCl3(caffeine)], Structure and Anticancer Activity

AU - Cramer, Roger E.

AU - Ho, Douglas M.

AU - Van Doorne, William

AU - Ibers, James A.

AU - Norton, Ted

AU - Kashiwagi, Midori

PY - 1981/8

Y1 - 1981/8

N2 - The salt [PPh3Me] [PtCl3(caffeine)] has been synthesized and its structure determined. It crystallizes in the triclinic space group Ci1-P1 with cell dimensions at -162 °C of a = 12.332 (5) Å, b = 13.230 (6) Å, c = 8.712 (4) Å, α = 97.07 (2)°, β = 99.78 (4)°, γ = 93.63 (1)°, V = 1385 Å3, and Z = 2. The structure was solved by heavy-atom methods, and the 217 variables were refined by least-squares techniques to a final R index on F of 0.038 for the 5670 data. The structure consists of discrete [PPh3Me]+ cations and [PtCl3(caffeine)]- anions. The square-planar Pt(II) ion is bound to atom N(9) of the caffeine ligand at a distance of 2.021 (5) Å. The related salt K[PtCl3(caffeine)] has significant anticancer activity.

AB - The salt [PPh3Me] [PtCl3(caffeine)] has been synthesized and its structure determined. It crystallizes in the triclinic space group Ci1-P1 with cell dimensions at -162 °C of a = 12.332 (5) Å, b = 13.230 (6) Å, c = 8.712 (4) Å, α = 97.07 (2)°, β = 99.78 (4)°, γ = 93.63 (1)°, V = 1385 Å3, and Z = 2. The structure was solved by heavy-atom methods, and the 217 variables were refined by least-squares techniques to a final R index on F of 0.038 for the 5670 data. The structure consists of discrete [PPh3Me]+ cations and [PtCl3(caffeine)]- anions. The square-planar Pt(II) ion is bound to atom N(9) of the caffeine ligand at a distance of 2.021 (5) Å. The related salt K[PtCl3(caffeine)] has significant anticancer activity.

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Triphenylmethylphosphonium Trichloro (caffeine) platinum (II), [P(C6H5)3(CH3)][PtCl3(caffeine)], Structure and Anticancer Activity

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