Multinuclear NMR study of reactions of methylphosphonic acid, CH3PO3H2, and (aminoalkyl)phosphonic acids, NH2(CH2)nPO3H2 (n = 1-3), with the cis-diamminediaquaplatinum(II) cation and cis-diamminedihydroxoplatinum(II)

Appleton T.G., Hall J.R. and McMahon I.J. (1986) Multinuclear NMR study of reactions of methylphosphonic acid, CH3PO3H2, and (aminoalkyl)phosphonic acids, NH2(CH2)nPO3H2 (n = 1-3), with the cis-diamminediaquaplatinum(II) cation and cis-diamminedihydroxoplatinum(II). Inorganic Chemistry, 25 6: 720-725. doi:10.1021/ic00226a004


Author Appleton T.G.
Hall J.R.
McMahon I.J.
Title Multinuclear NMR study of reactions of methylphosphonic acid, CH3PO3H2, and (aminoalkyl)phosphonic acids, NH2(CH2)nPO3H2 (n = 1-3), with the cis-diamminediaquaplatinum(II) cation and cis-diamminedihydroxoplatinum(II)
Journal name Inorganic Chemistry   Check publisher's open access policy
ISSN 0020-1669
Publication date 1986-01-01
Sub-type Article (original research)
DOI 10.1021/ic00226a004
Volume 25
Issue 6
Start page 720
End page 725
Total pages 6
Subject 1604 Human Geography
Abstract 31P, 15N, and, in some cases, 195Pt NMR spectroscopy has been used to study the reactions of cis-Pt(NH3)2(H2O)22+ and cis-Pt(NH3)2(OH)2 (using 15N-substituted ammine) with CH3PO3H2 (mpH2) and NH2(CH2)nPO3H2 (n = 1, ampH2; n = 2, aepH2; n = 3, appH2). Each initially gives at pH 1.5 and 4 a complex in which the ligand is bound only through oxygen. At pH 4 subsequent reaction occurs to give a complex in which Pt atoms are bridged by phosphonate and hydroxo groups. With amp, further reaction occurs at pH 1.5 and 4 to give the chelate complex Pt(NH3)2(ampH-N,O)+. At pH 4 an intermediate, Pt(NH3)2(μO,O′-amp-N)Pt(NH 3)2(H2O)2+, is detected. In alkaline solution amp2- gives ultimately cis-Pt(NH3)2(amp-N)2 2-, while aep2- gives cis-Pt(NH3)2(aep-N,O), and app2- does not react. These differences are rationalized in terms of decreasing nucleophilicity of the ammine group of NH2(CH2)nPO3 2- as n increases.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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