Hydrogen Bonding in Crystalline Alcohol Solvates of the Platinum(II) Sulfido Complex [Pt 2 (μ‐S) 2 (PPh 3 ) 4 ]

Inorganica Chimica Acta

Tiekink

2017

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Section: Methodsmentioning

confidence: 99%

Mixed-chalcogenide diplatinum complexes; an investigation of ligand exchange processes using ESI mass spectrometry

Fortney-Zirker

Inorganica Chimica Acta

Tiekink

2017

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“…Solvents were of LR grade and used without purification. [Pt 2 (μ-S) 2 (PPh 3 ) 4 ] was prepared from cis-[PtCl 2 (PPh 3 ) 2 ] to Na 2 S·9H 2 O (Aldrich) in benzene suspension following the literature procedure [28,29]. The following chemicals were used as supplied from commercial sources: 2-bromoethylisocyanate (Aldrich), 2-methoxyethylamine (Aldrich), sodium bromide (BDH), sodium tetraphenylborate (BDH), methoxypolyethyleneglycol 350 (SigmaAldrich), and ammonium hexafluorophosphate (Aldrich).…”

Section: Methodsmentioning

confidence: 99%

Towards the water solubilization of [Pt₂(μ-S)₂(PPh₃)₄] derivatives by polyether functionalization – a synthetic and mass spectrometric investigation

Coughlan

Journal of Coordination Chemistry

2014

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Synthetic methods have been developed to append polyether chains onto the nucleophilic platinum (II) sulfide complex [Pt 2 (μ-S) 2 (PPh 3 ) 4 ] through alkylation reactions of a sulfide ligand. Reaction of [Pt 2 (μ-S) 2 (PPh 3 ) 4 ] with Br(CH 2 ) 2 NHC(O)NH(CH 2 ) 2 OMe gave the monoalkylated model complex [Pt 2 (μ-S){μ-S(CH 2 ) 2 NHC(O)NH(CH 2 ) 2 OMe}(PPh 3 ) 4 ] + , isolated as its PF 6 À salt. Extension of this methodology to the polyether-derived alkylating agent Br(CH 2 ) 2 NHC(O)NHCHMeCH 2 (OCHMeCH 2 ) n OCH 2 CH 2 OMe derived from the polyether amine Jeffamine ® M600 gave the cation [Pt 2 (μ-S){μ-S(CH 2 ) 2 NHC(O)NHCHMeCH 2 (OCHMeCH 2 ) n OCH 2 CH 2 OMe}(PPh 3 ) 4 ] + , isolated as its BPh 4 À salt and characterized by ESI MS and 31 P{ 1 H} NMR spectroscopy. Reaction of [Pt 2 (μ-S) 2 (PPh 3 ) 4 ] with the chloro-PEG Me(OCH 2 CH 2 ) n Cl (derived from MeOPEG 350) in the presence of NaBr in refluxing methanol proceeded slowly, giving [Pt 2 (μ-S){μ-S(CH 2 CH 2 O) n Me} (PPh 3 ) 4 ] + , isolated as its BPh 4 À salt. The aqueous solubility of a selection of compounds was determined.The functionalisation of the platinum(II) sulfide complex [Pt 2 (μ-S) 2 (PPh 3 ) 4 ] with polyether-based alkylating agents, monitored by ESI mass spectrometry, leads to a series of novel polyether-thiolate complexes.

“…Petroleum spirits refers to the fraction of boiling range 40-60°C. The complex [Pt 2 (l-S) 2 (PPh 3 ) 4 ] 1 was prepared by the literature procedure from cis-[PtCl 2 (PPh 3 ) 2 ] and sodium sulfide nonahydrate (Aldrich) in benzene suspension [30,31].…”

Section: Methodsmentioning

confidence: 99%

“…ESI MS: m/z 1636 ([3g] + , 100%). 31 PhC(@NNHC(NH)NH 2 )CH 2 Cl (16.8 mg, 0.0798 mmol) was added to 1 (100 mg, 0.0665 mmol) in methanol (30 mL). The mixture was stirred at room temperature for 15 min to give a pale yellow solution.…”

Section: Preparation Of [Pt 2 (L-s){l-sch 2 C(@nnhc(o)nh 2 )Ch 3 }(Ppmentioning

confidence: 99%

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Dinuclear platinum complexes with designer thiolate ligands from the monoalkylation of [Pt2(μ-S)2(PPh3)4]

Ujam

Devoy

Inorganica Chimica Acta

et al. 2010

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a b s t r a c tAlkylation reactions of the nucleophilic platinum(II) sulfide complex [Pt 2 (l-S) 2 (PPh 3 ) 4 ] with functionalised alkylating agents have been investigated as a versatile synthetic route to dinuclear, cationic sulfidethiolate complexes of the type [Pt 2 (l-S)(l-SR)(PPh 3 ) 4 ] + , extending the range of thiolate complexes that can be prepared using this methodology. A wide range of functional groups can be incorporated, using appropriate alkylating agents, and include ketone, ester, amide, hydrazone, semicarbazone, thiosemicarbazone, oxime, guanidine, urea and thiourea groups.