Platinum complexes with iminodiacetate and (methylimino)diacetate, including genuine meridional complexes

Appleton T.G., Berry R.D. and Hall J.R. (1985) Platinum complexes with iminodiacetate and (methylimino)diacetate, including genuine meridional complexes. Inorganic Chemistry, 24 5: 666-672.

Author Appleton T.G.
Berry R.D.
Hall J.R.
Title Platinum complexes with iminodiacetate and (methylimino)diacetate, including genuine meridional complexes
Journal name Inorganic Chemistry   Check publisher's open access policy
ISSN 0020-1669
Publication date 1985-01-01
Sub-type Article (original research)
Volume 24
Issue 5
Start page 666
End page 672
Total pages 7
Subject 1604 Human Geography
Abstract Reactions of PtCl 4 2- with LH 2 (iminodiacetic acid, idaH 2, or (methylimino)diacetic acid, midaH 2) have been reported in the literature to yield platinum(II) complexes with the ligand meridional, K[Pt(ida)Cl]·2HCl and H[Pt(mida)Cl]·2HCl. These compounds are platinum(IV) complexes, Pt(L)Cl 3 -, with the ligand facial, which may be prepared directly from K 2PtCl 6 and LH 2. Reaction of K 2PtCl 4 with LH 2 at ambient temperature gives K[Pt(LH)Cl 2], in which the ligand is bidentate, coordinating through the N atom and one O atom. Genuine mer-Pt(L)Cl - may be obtained (more readily for L = mida) by careful addition of alkali to a solution of Pt(LH)Cl 2 -. Heating a solution of K 2PtCl 4 with excess LH 2 gives sparingly soluble Pt(LH) 2 (previously reported for L = ida), which, with alkali, gives soluble Pt(L) 2 2-. These compounds contain bidentate ligand. For Pt(ida) 2 2-, slow cis-trans isomerizalion occurs in solution. At high pH, inversion about coordinated nitrogen becomes rapid. In alkaline D 2O solutions, the methylene group of the coordinated arm is specifically deuterated. The compound described in the literature as H 2n[Pt(mida) 2] n is the platinum(IV) compound Pt(mida) 2. This complex, and Pt(ida) 2, may be prepared by reaction of the corresponding platinum(II) complex, Pt(LH) 2, with hydrogen peroxide.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

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Sub-type: Article (original research)
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