trans-Bis[dicyclohexylphosphino-N-phenyl(thioformamido)]platinum(II): Pt[(c-C6H11)2PC(S)=N(C6H5)]2

Dakternieks, Dainis; Corbett, M.; Hoskins, Bernard F.; Jackson, Patricia A.; Tiekink, E. R. T.

doi:10.1107/s010827018708747x

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…For complex 5 the Pd−S and Pd−P distances are in the range observed for other bis(phosphinothiolate)palladium(II) complexes. ,, Complex 6 represents, to the best of our knowledge, the first example of a structurally characterized mononuclear bis(phosphinothiolate)platinum(II) complex. The Pt−S and Pt−P bond lengths are similar to those observed for the related polymeric bimetallic complex catena - trans -[AgPt(μ-SCH 2 CH 2 PEt 2 ) 2 ]NO 3 and for other trans-bis-chelate Pt(II) complexes with anionic P,S-donor ligands such as the 2-(dicyclohexylphosphino)- N -phenylthioacetamidocarboxylate and smaller than those described for trans -dithiolatebis(triphenylphosphine)platinum(II) complexes, due to the chelate effect. The menthane cycle presents the chair conformation in 5 and 6 , as it does in 1 , with the (diphenylphosphino)methyl group in an axial position.…”

Section: Resultssupporting

confidence: 73%

Synthesis and Characterization of a New Chiral Phosphinothiol Ligand Derived from (−)-Menthone and Its Palladium(II) and Platinum(II) Complexes

et al. 2003

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The chiral ligand (1R,2S,5R)-1-((diphenylphosphino)methyl)-2-isopropyl-5-methylcyclohexanethiol (4) has been prepared from low-cost commercial (−)-menthone in a three-step enantioselective synthesis. Oxidative addition of 2 equiv of this phosphinothiol ligand to [Pd0(PPh3)4] gave the enantiopure bis(phosphinothiolate)palladium(II) complex 5, which only exists as the trans-P,P geometrical isomer, in both the solid state and solution, owing to the preference of the chelate rings to adopt the λ conformation in which the position of the menthane ring does not allow a conformation of the phenyl groups compatible with the more sterically hindered cis geometry. These stereoelectronic coordination preferences of the chiral phosphinothiolate ligand have been confirmed by the structure of the analogous Pt(II) complex 6, which also exhibits the trans-P,P geometry exclusively, both in the solid state and in solution. Crystals of 5·1/2CH2Cl2 and 6·1/2CH2Cl2 are isomorphic, belonging to the monoclinic crystal system C2. Both chiral structures show mononuclear square-planar trans complexes with locked λ chelate ring conformations. Compound 6 represents the first example of a structurally characterized mononuclear bis(phosphinothiolate)platinum(II) complex. Addition of 1 equiv of ligand 4 to a solution of [PdCl2(PPh3)2] gave the less sterically hindered complex chloro(phosphinothiolate)(triphenylphosphine)palladium(II) (7), which exhibits the expected cis−trans equilibrium in solution, but strongly displaced to the more sterically stable trans isomer.

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Section: Resultssupporting

confidence: 73%

Synthesis and Characterization of a New Chiral Phosphinothiol Ligand Derived from (−)-Menthone and Its Palladium(II) and Platinum(II) Complexes

et al. 2003

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“…Hetero (S,P) Iigands are found in four coloured examples with cis [191,193,194] and trans [192] square planar geometry. The sizes of the metallocyclic rings are five- [192] and seven-membered [191][192][193], The remaining four colourless examples have tetradentate (S2,P2) Iigands [193][194][195][196][197] forming distorted square planar environments about the Pt(II) atom.…”

Section: Pts 2 X 2 (X = P Br I or As)mentioning

confidence: 99%

STRUCTURAL ASPECT OF PLATINUM COORDINATION COMPOUNDS: PART III. MONOMERIC SQUARE PLANAR (Pt A2XY AND PtABXY) AND TRIGONAL BIPYRAMIDAL PtII COORDINATION COMPOUNDS

Holloway¹,

McInik²

2004

Reviews in Inorganic Chemistry

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“…; in [Pt(η 2 -dmit)(η 2dppe)] 171 , [Pt(η 2 -mnt)(η 2 -dppe)] 172 , [Pt(η 2 -mnt)(η 2dppb)] 172 and [Pt(η 2 -S 4 )(η 2 -dppe)] 173 both S,S and P,P ligands create five-membered metallocycles. ] 175 , [Pt(η 2 -dcptf) 2 ] 176 , [Pt(η 2 -ptpc) 2 ] 177 and [Pt(η 2 -diop) 2 ]178 , which create a distorted square planar geometry about the Pt(II) atom which has pair of four-175,176 and five-177,178 membered metallocycles.…”

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confidence: 99%

THIO-LIGANDS in MONOMERIC Pt(II) COMPLEXES – STRUCTURAL ASPECTS

2017

AJCR

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This review includes over three hundred derivatives in which each Pt(II) atom is in a distorted square planar environment with inner coordination spheres of PtS4, PtS3X, PtS2X2, PtSX3, PtS2XY, PtSX2Y and PtSXYZ. There is a wide variety of mono-, bi-, ter-, and tetra-dentate ligands, all incorporating both homoand hetero-dentate varieties. The most common ligands are dimethylsulphoxide and triphenylphosphine. The chelating ligands create a wide variety of metallocyclic rings, where the effects of both steric and electronic factors are observed. Examples of cis-and trans-isomerism exists in these derivatives as well as distortion isomerism, which is much more common. Ligands exerting the trans-effect in these Pt(II) complexes are stronger in the order: OL, NL < Cl < Br < I < SL < H ~ AsL ~ PL ~ CN. Several relationships between the structural parameters were found and are discussed. The complexes crystallized in five crystal classes: hexagonal (0.4%) < tetragonal (1.5%) < orthorhombic (13.8%) < triclinic (23.7%) < monoclinic (60.7%).

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trans-Bis[dicyclohexylphosphino-N-phenyl(thioformamido)]platinum(II): Pt[(c-C6H11)2PC(S)=N(C6H5)]2

Cited by 3 publications

References 2 publications

Synthesis and Characterization of a New Chiral Phosphinothiol Ligand Derived from (−)-Menthone and Its Palladium(II) and Platinum(II) Complexes

Synthesis and Characterization of a New Chiral Phosphinothiol Ligand Derived from (−)-Menthone and Its Palladium(II) and Platinum(II) Complexes

STRUCTURAL ASPECT OF PLATINUM COORDINATION COMPOUNDS: PART III. MONOMERIC SQUARE PLANAR (Pt A2XY AND PtABXY) AND TRIGONAL BIPYRAMIDAL PtII COORDINATION COMPOUNDS

THIO-LIGANDS in MONOMERIC Pt(II) COMPLEXES – STRUCTURAL ASPECTS

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