Halogen-bridged complexes of platinum(II) and their reactions with dimethylformamide

Abstract

Bridged compounds, [Pt(L)Cl2]2 (L = pyridine, picoline, and lutidine) have been prepared from the reactions between K[Pt(L)Cl3] and perchloric acid. The molecular weight measurements indicate that they are dimers in chloroform solutions. When [Pt(L)Cl2]2 is dissolved in dimethylformamide (DMF), [Pt(L)(DMF)Cl2] is formed and has been isolated. Infrared and nmr studies have shown that DMF is coordinated to platinum through the oxygen atom.

A convenient route to dinuclear chloro-bridged platinum(ii) derivatives vianitrile complexes

“…Some preparations of dinuclear complexes of amines, [Pt(m-Cl)Cl(amine)] 2 , are carried out by photochemical decomposition of [PtCl 2 (h 2 -C 2 H 4 )(amine)] 23 or by addition of HClO 4 to K[PtCl 3 (amine)]. 24 Although the lability of nitrile complexes is exploited in several syntheses, a systematic study of RCN substitution on platinum(II) is not present. Since dichlorobisorganonitrile complexes [PtCl 2 (NCR) 2 ] are easily prepared, 25 we have considered that they could be good precursors of [PtCl 2 (NCR)L] derivatives by reaction with various type of ligands L in suitable molar ratios.…”

Iodo-bridged complexes of platinum(II) and synthesis of cis mixed-amine platinum(II) compounds

“…Chloro-bridged dimers of piperidine, aniline, and pyridine derivatives have been reported (3)(4)(5)(6)(7). Courtot et al (5) synthesized a chloro-bridged dimer with a very bulky amine, t-butylamine but were unable to prepare dimers with smaller amines since their method of synthesis is limited.…”

The molecular and crystal structure of trans-dichloro(dimethylformamide) (2,6-lutidine)platinum(II)

“…When L = 2,6-lutidine (2,6-lut), the reacwe have isolated a series of compounds tion stops at [Pt(DMF)(2,6-lut)Clz]. We have al-[P~(DMF)(L)CI,I where L = pyridine derivative ready reported that the steric hindrance of 2,6-1ut to and JJMF = dimethylformamide (1). ~h~ its cis position is so large that cis-[Pt(2.6-lut),Cl,] pounds were first prepared by the following reac-cannot be obtained from the reaction of K[~t (2,6-tion: lut)Cl,] and 2,6-lut (2).…”

“…The DMF compounds can also be prepared by [21 DMF DMF (1). Infrared spectroscopy has shown that the The orthorhombic standard centrosymmetric space group Pbca was established unambiguously from precession photographs.…”