Nickel(II), palladium(II), platinum(II) and platinum(IV) complexes of cis-1,2-bis(diphenylphosphino) ethene and nitrogen-containing heterocycles or sulfur ligands

Oberhauser, Werner; Bachmann, Christian; Stampfl, Thomas; Haid, Rainer; Langes, Christoph; Rieder, Alexander; Brüggeller, Peter

doi:10.1016/s0020-1693(97)06041-6

Cited by 33 publications

(21 citation statements)

References 65 publications

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“…2 A π-bond interaction between the double bond and the metal-ligand bond is responsible for the short C=C and Pt-P bond distances. 8,14,15 Contrarily to our expectation, attempts to obtain excitation spectra of 4, both in the solid state and in solution were not successfull. The spectra were not well-resolved, showed low emission and were very dificult to interpret.…”

Section: Discussionmentioning

confidence: 77%

“…In the related complex cis-[PtCl 2 (dppen)] 8 complex the C=C bond distance was found to be 1.315(5) Å. Diphosphine complexes that exhibit short C=C and Pt-P bond lengths, such as the above mentioned, are described as presenting a π bonding interation between the double bond and the metal-ligand bond. 8,14,15 In some cases this leads to completely planar structures, although in other cases deviation from the coplanarity is observed, due to crystal packing effect as found in the two crystal modifications of cis-[PtCl 2 (dppen)]. 8,15 In one of them the square-planar coordination of the platinum atom is slighttly distorted 8 and in the other one it is completely planar.…”

Section: Solid-state Structural Datamentioning

confidence: 99%

“…8,14,15 In some cases this leads to completely planar structures, although in other cases deviation from the coplanarity is observed, due to crystal packing effect as found in the two crystal modifications of cis-[PtCl 2 (dppen)]. 8,15 In one of them the square-planar coordination of the platinum atom is slighttly distorted 8 and in the other one it is completely planar. 13 In spite of the change from complete to partial coplanarity in these two crystalline forms, the π bond interaction is maintained.…”

Section: Solid-state Structural Datamentioning

confidence: 99%

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Synthesis and X-ray Crystal Structure of a Stable cis-1,2-bis(diphenylphosphino)ethene Monodentate Thiolate Platinum Complex and TGA Studies of its Precursors

Vaz¹,

Silva²,

Reibenspies³

et al. 2002

J. Braz. Chem. Soc.

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O complexo de Pt(II) [Pt(SPh) 2 (dppen)] (4) , (dppen, Ph 2 PCH=CHPPh 2 ), estável, foi obtido de [PtCl(SPh) 2 (SnPh 3 )cod] (1) (cod = 1,5-ciclooctadieno), por eliminação redutiva de SnClPh 3 e substituição do ligante cod pela difosfina, porém em baixo rendimento. Contudo, quando [Pt(SPh) 2 cod] (3) foi utilizado como material de partida, 4 foi obtido em rendimento de 80%. A viabilidade dessas reações foi sugerida por estudos de TG dos materiais de partida. O complexo 4 foi caracterizado por espectroscopia de RMN multinuclear ( 195 Pt, 31 P, 1 H e 13 C), IV e análise elementar. A estrutura molecular de 4, resolvida por um estudo de difração de raios X, exibe geometria quadrática plana ligeiramente distorcida e distâncias de ligação C=C e Pt-P pequenas, o que foi interpretado em termos de uma interação π entre a ligação dupla e a ligação metal-ligante, de acordo com dados descritos na literatura.The stable Pt(II) complex [Pt(SPh) 2 (dppen) (4), (dppen, Ph 2 PCH=CHPPh 2 ) was obtained from [PtCl(SPh) 2 (SnPh 3 )cod] (1) (cod = 1,5-cyclooctadiene) by reductive elimination reaction of SnClPh 3 and substitution of the cod ligand by the diphosphine, albeit in low yields. Yields of 80% were obtained when [Pt(SPh) 2 cod] (3) was used as the starting material instead. The viability of these reactions was suggested by a TG study, performed on the starting materials. Complex 4 was characterized by multinuclear NMR ( 195 Pt, 31 P, 1 H and 13 C) and IR spectroscopies and elemental analysis. The molecular structure, solved by an X-ray diffraction study, exhibted a slightly distorted square-planar geometry and short C=C and Pt-P bond distances which were interpreted in terms of a π interaction between the double bond and the metal-ligand bond, as observed for other diphosphine compounds described previously.

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Section: Discussionmentioning

confidence: 77%

Section: Solid-state Structural Datamentioning

confidence: 99%

Section: Solid-state Structural Datamentioning

confidence: 99%

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Synthesis and X-ray Crystal Structure of a Stable cis-1,2-bis(diphenylphosphino)ethene Monodentate Thiolate Platinum Complex and TGA Studies of its Precursors

Vaz¹,

Silva²,

Reibenspies³

et al. 2002

J. Braz. Chem. Soc.

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“…Henderson et al [4] and Traeger [5] have used electrospray ionization (ESI) extensively as a mild technique to elucidate the structures of thiosalicylic metal complexes and to study other transition-metal coordination complexes. It has been known since the inception of fast atom bombardment (FAB) as an ionization technique, that it can be used for the analysis of transition-metal coordination complexes [6,7]. We also found that FAB ionization is equally capable of producing MH ϩ ions of the Group 10 metal complexes [2, 3].…”

mentioning

confidence: 88%

Mass spectral behavior of some homoleptic and mixed aryldichalcogenide bis(diphenylphosphino)ferrocenenickel(II), palladium(II), and platinum(II), and bis(diisopropylphosphino)ferrocenepalladium(II) complexes

Osei-Twum

Litorja

Darkwa

et al. 2005

J. Am. Soc. Mass Spectrom.

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The mass spectral behavior of a number of organometallic complexes containing the Group 10 metals Ni, Pd, and Pt, together with various thiolate ligands were studied. For Pd, two main types of complexes, differing by the substituents on the phosphorus atom were studied. Types I and II were substituted with bis(diphenylphosphino)ferrocene and bis(diisopropylphosphino)ferrocene ligands, respectively. The Ni complexes, except for one, and the Pd Type I complexes had no molecular radical cations (M(+.)) in their EI spectra. On the other hand, all the Pt complexes showed intense M(+.) ions in their EI spectra indicating that these complexes were more stable as radical cations than those of Ni and Pd. The FAB and MALDI spectra of all the complexes displayed intense quasi-molecular ions (MH(+)) and the fragmentations in both modes were similar. The MALDI spectra of several complexes displayed only M(+.) ions while one gave evidence of both MH(+) and M(+.) ions. Several Pd Type II complexes yielded intense M(+.) in their EI spectra.

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“…Although the importance of organotin halide-phosphine complexes has been realized in the catalysis of ring opening of a,b-epoxyketones [14], the lack of structural understanding is perhaps responsible for not using organotin-phosphine complexes as potential catalysts. The difference in reactivity between cis-1,2-bis(diphenylphoshino)ethylene (cis-dppen) and its saturated analogue, dppe with various transition metals has been observed in a number of studies [15][16][17][18]. The purpose of the present study is to investigate the interaction of the rigid bisphosphine cis-dppen with monoorganotin chlorides.…”

Section: Introductionmentioning

confidence: 94%

Synthesis of monoorganotin(IV) chloride complexes of cis-1,2-bis(diphenylphosphino)ethylene: Solution and solid state structures

Mothi

Stœckli-Evans

Panchanatheswaran

2007

Journal of Organometallic Chemistry

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Organotin(IV) complexes of the type [RSnCl 3 (cis-Ph 2 PCH@CHPPh 2 )] [R = Me (1), n Bu (2), Ph (3)] were prepared by the reaction of RSnCl 3 with the rigid bisphosphine ligand, cis-1,2-bis(diphenylphosphino)ethylene in dichloromethane. The complexes have been characterized both in solution and the solid state. Low temperature 31 P and 119 Sn NMR studies indicate two different phosphorus environments. The crystal structures indicate a weak but chelating mode of coordination of the two phosphorus atoms to tin, leading to a distorted octahedral geometry. In solution the complexes 1-3 undergo a redistribution reaction to form [SnCl 4 (cis-Ph 2 PCH@CHPPh 2 )] (4) as one of the products. In order to confirm the redistribution, complex 4 has been prepared separately and characterized both structurally and spectrally.

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Nickel(II), palladium(II), platinum(II) and platinum(IV) complexes of cis-1,2-bis(diphenylphosphino) ethene and nitrogen-containing heterocycles or sulfur ligands

Cited by 33 publications

References 65 publications

Synthesis and X-ray Crystal Structure of a Stable cis-1,2-bis(diphenylphosphino)ethene Monodentate Thiolate Platinum Complex and TGA Studies of its Precursors

Synthesis and X-ray Crystal Structure of a Stable cis-1,2-bis(diphenylphosphino)ethene Monodentate Thiolate Platinum Complex and TGA Studies of its Precursors

Mass spectral behavior of some homoleptic and mixed aryldichalcogenide bis(diphenylphosphino)ferrocenenickel(II), palladium(II), and platinum(II), and bis(diisopropylphosphino)ferrocenepalladium(II) complexes

Synthesis of monoorganotin(IV) chloride complexes of cis-1,2-bis(diphenylphosphino)ethylene: Solution and solid state structures

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