Structures of bis(triphenylphosphine)gold(I) hexafluorophosphate, [Au(PPh3)2]PF6 (1), and bis(triphenylphosphine)gold(I) nitrate, [Au(PPh3)2]NO3 (2)

Staples, Richard J.; King, Christopher L.; Khan, M. Nazrul I.; Winpenny, R. E. P.; Fackler, John P.

doi:10.1107/s0108270192008680

Cited by 22 publications

(13 citation statements)

References 2 publications

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“…This corresponds to a decrease in the ratio between the π‐acceptor and σ‐donor abilities of the nitrile donors with respect to, for example, the isonitrile and CO ligands 24. Overall, the Au–donor separations and the interligand angles in compounds 3 and 3′ are similar to those reported previously for [Ph 3 PAu(NCMe)][SbF 6 ]25 and similar complexes with 2‐phosphanylbiphenyl ligands (type B in Scheme ),25, 26 while the AuP bonds in 4 a compare well with the data determined for complexes [Au(PR 3 ) 2 ]X, in which R/X=Me/PF 6 ,27 Ph/NTf 2 ,28 Ph/NO 3 29 and FcCH 2 PPh 2 /ClO 4 (Fc=ferrocenyl) 30…”

Section: Resultssupporting

confidence: 89%

Synthesis and Catalytic Use of Gold(I) Complexes Containing a Hemilabile Phosphanylferrocene Nitrile Donor

Škoch

Cı́sařová

Štěpnička

2015

Chemistry A European J

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Removal of the chloride ligand from [AuCl(1-κP)] (2) containing a P-monodentate 1'-(diphenylphosphanyl)-1-cyanoferrocene ligand (1), by using silver(I) salts affords cationic complexes of the type [Au(1)]X, which exist either as cyclic dimers [Au(1)]2 X2 (3 a, X=SbF6 ; 3 c, X=NTf2 ) or linear coordination polymers [Au(1)]n Xn (3 a', X=SbF6 ; 3 b', X=ClO4 ), depending on anion X and the isolation procedure. As demonstrated for 3 a', the polymers can be readily cleaved by the addition of donors, such as Cl(-) , tetrahydrothiophene (tht) or 1, giving rise to the parent compound 2, [Au(tht)(1-κP)][SbF6 ] (5 a) or [Au(1-κP)2 ][SbF6 ] (4 a), respectively, of which the last two compounds can also be prepared by stepwise replacement of tht in [Au(1-κP)2 ][SbF6 ]. The particular combination of a firmly coordinated (phosphane) and a dissociable (nitrile) donor moieties renders complexes 3/3' attractive for catalysis because they can serve as shelf-stable precursors of coordinatively unsaturated Au(I) fragments, analogous to those that result from the widely used [Au(PR3 )(RCN)]X catalysts. The catalytic properties of the Au-1 complexes were evaluated in model annulation reactions, such as the synthesis of 2,3-dimethylfuran from (Z)-3-methylpent-2-en-4-yn-1-ol and oxidative cyclisation of alkynes with nitriles to produce 2,5-disubstituted 1,3-oxazoles. Of the compounds tested (2, 3 a', 3 b', 3 a, 4 a and 5 a), the best results were consistently achieved with dimer 3 c, which has good solubility in organic solvents and only one firmly bound donor at the gold atom. This compound was advantageously used in the key steps of annuloline and rosefuran syntheses.

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Section: Resultssupporting

confidence: 89%

Synthesis and Catalytic Use of Gold(I) Complexes Containing a Hemilabile Phosphanylferrocene Nitrile Donor

Škoch

Cı́sařová

Štěpnička

2015

Chemistry A European J

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“…All four F atoms in the BF4-anion are disordered. Two other [Au(PPh3)z]+X--type structures have been reported recently (X = NO3, PF6; Staples, King, Khan, Winpenny & Fackler, 1993). Fig.…”

Section: ]+[Bf4] - (I)mentioning

confidence: 99%

[Au(PPh3)2]+[BF4]−

Wang¹

1996

Acta Crystallogr C

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“…For the cation shown in Figure , the two Au–P bond lengths are found to be 2.279(3) Å and 2.291(3) Å; the P–Au–P bond angle was determined as 166.91(10)° and is thus contracted from the ideal linear geometry. The related phosphine complex [Au(PPh 3 ) 2 ]PF 6 has Au–P bond lengths of 2.314(2) Å and 2.309(2) Å and a P–Au–P bond angle of 177.4(1)°; for [Au(PPh 3 ) 2 ]NO 3 the corresponding values are 2.312(4) Å and 2.311(2) Å, and 171.1(2)° . Thus, the gold–phosphonite bond lengths are shorter than in the related arylphosphine complexes, and the smaller P–Au–P bond angle is perhaps a consequence of the bulky 3,3′‐dimethylbiphenoxy moiety of the ligand, although for [Au(PPh 3 ) 2 ]BF 4 the value is 167.3(1)°, so care must be taken when drawing conclusions.…”

Section: Resultsmentioning

confidence: 99%

Coinage Metal Complexes of Phosphonite Analogues of 2‐Diphenylphosphino‐1,1′‐binaphthyl (H‐MOP) and 2‐Diphenylphosphino‐2′‐methoxy‐1,1′‐binaphthyl (MeO‐MOP)

et al. 2017

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Chiral MOP‐phosphonites containing two phenoxy substituents (S)‐1a/(R)‐1b, a biphenoxy group (S)‐2a/(R)‐2b or the 3,3′‐dimethylbiphenoxy group (S)‐3a/(R)‐3b, have been coordinated to the coinage metals. Six [Au(LP)Cl] complexes have been prepared and five were characterised by X‐ray crystallography, as well as complex [Au{(S)‐3a}2]SbF6. Six [Ag(LP)OTf] complexes were synthesised, studied by VT NMR spectroscopy and, in the case of [Ag{(R)‐2b}OTf], by X‐ray crystallography. Six [Cu(LP)(MeCN)2]PF6 complexes were prepared, and [Cu{(R)‐3b}(MeCN)2]PF6 was characterised crystallographically, as was the decomposition product [Cu{(S)‐1a}(O2PF2)]2.

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Structures of bis(triphenylphosphine)gold(I) hexafluorophosphate, [Au(PPh3)2]PF6 (1), and bis(triphenylphosphine)gold(I) nitrate, [Au(PPh3)2]NO3 (2)

Cited by 22 publications

References 2 publications

Synthesis and Catalytic Use of Gold(I) Complexes Containing a Hemilabile Phosphanylferrocene Nitrile Donor

Synthesis and Catalytic Use of Gold(I) Complexes Containing a Hemilabile Phosphanylferrocene Nitrile Donor

[Au(PPh3)2]+[BF4]−

Coinage Metal Complexes of Phosphonite Analogues of 2‐Diphenylphosphino‐1,1′‐binaphthyl (H‐MOP) and 2‐Diphenylphosphino‐2′‐methoxy‐1,1′‐binaphthyl (MeO‐MOP)

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