Gold(I) Complexes of Secondary and Tertiary Amines. Crystal Structure of Triphenylphosphineaurio(I)qinuclidinium Tetrafluoroborate

Grohmann, Andreas; Riede, Jürgen; Schmidbaur, Hubert

doi:10.1515/znb-1992-0907

Cited by 19 publications

(14 citation statements)

References 17 publications

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“…The crystal structure of 5 ( Figure 1) consists of [Au(NH 2 Ar)(PPh 3 )] ions and triflate anions. The cation shows the gold atom in an almost linear environment (P-Au-N 178.10 (11)8) with AuÀN (2.112(4) ) and AuÀP (2.2376 (12) ) bond lengths similar to those found in the related complexes [Au(NMe 3 )(PPh 3 )]ClO 4´C H 2 Cl 2 [38] (2.108(7) and 2.231(2) ), [Au(quinuclidine)(PPh 3 )]BF 4 [40] (2.11(1) and 2.240(4) ) and [Au(NH 2 tBu)L]BF 4 (L PMe 3 , PMePh 2 ) [41] (2.105(8) ± 2.11(1) and 2.235(3) ± 2.236(3) ). The last two complexes are the only ones related with 5 that contain a primary amine.…”

Section: Synthesis Of Acetonino Complexes Of Gold(i) and Silver(i): Wsupporting

confidence: 64%

The First Acetimine Gold(I) and Gold(III) Complexes and the First Acetonine Complexes

et al. 2001

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Ketimino(phosphino)gold(I) complexes of the type [Au[NR=C(Me)R']L]X (X = ClO4, R = H, L = PPh3, R'=Me (la), Et (2a); L=PAr3 (Ar=C6H4OMe-4), R'=Me (1b), Et (2b); L=PPh3, R=R'=Me (3); X= CF3SO3 (OTf), L=PPh3, R=R'=Me (3'); R=Ar, R'=Me (4)) have been prepared from [Au(acac)L] (acac = acetyl acetonate) and ammonium salts [RNH3]X dissolved in the appropriate ketone MeC(O)R'. Complexes [Au(NH=CMe2)2]X (X = C1O4 (6), OTf (6')) were obtained from solutions of [Au(NH3)2]X in acetone. The reaction of 6 with PPN[AuCl2] or with PhICl2 gave [AuCl(NH=CMe2)] (7) or [AuCI2(NH=CMe2)2]ClO4 (8), respectively. Complex 7 was oxidized with PhICl2 to give [AuCl3(NH=CMe2)] (9). The reaction of [AuCl(tht)] (tht = tetrahydrothiophene), NaClO4, and ammonia in acetone gave [Au(acetonine)2]ClO4 (10) (acetonine = 2,2,4,4,6-pentamethyl-2,3,4,5-tetrahydropyrimidine) which reacted with PPh3 or with PPN[AuCl2] to give [Au(PPh3)(acetonine)]ClO4 (11) or [AuCl(acetonine)] (12), respectively. Complex 11 reacts with [Au(PPh3)(Me2CO)]ClO4 to give [(AuPPh3)2(mu-acetonine)](ClO4)2 (13). The reaction of AgClO4 with acetonine gave [Ag(acetonine)(OClO3)] (14). The crystal structures of [Au(NH2Ar)(PPh3)]OTf (5), 6' and 10 have been determined.

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Section: Synthesis Of Acetonino Complexes Of Gold(i) and Silver(i): Wsupporting

confidence: 64%

The First Acetimine Gold(I) and Gold(III) Complexes and the First Acetonine Complexes

et al. 2001

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“…Although gold(I) mono-and bisphosphine compounds have been extensively studied [12] together with their mechanisms of cytotoxity and anti-tumour activity [13], bidentate gold(I) compounds that utilise both a hard and soft donor atom are only poorly represented in the literature [14]. Among the 'hard' donor type atoms, the co-ordination chemistry of gold(I) oxygen compounds [15,16] shows a distinct paucity in the literature, while gold(I) complexes with nitrogen donor functions are more common yet less stable than their phosphine analogues [17,18].…”

mentioning

confidence: 99%

Bidentate amino- and iminophosphine ligands in mono- and dinuclear gold(I) complexes: Synthesis, structures and AuCl displacement by AuC6F5

Williams

Traut

Kriel

et al. 2007

Inorganic Chemistry Communications

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“…An early example has been the (quinocludine)(triphenylphosphine)gold(I) tetrafluoroborate, with an N-Au-P axis [7]. In the course of the present and some earlier studies, a similar complex with NEt3 and (o-tolyl^P was isolated and struc turally characterized.…”

Section: (T Riethylam In E)[ Tri( O -To Ly L )Phosph In E ]G O Ld ( Imentioning

confidence: 71%

The Trichlorogermanite(II) Anion and its Gold(I) Complexes

Tripathi

Wegner

Schier

et al. 1998

Zeitschrift Für Naturforschung B

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Tetraphenylphosphonium trichlorogermanite(II) (1) has been prepared (as a reference compound) from Ph4P+ Cl- and GeCl2 (dioxane) in tetrahydronaphthalene. Its structure has been determined by single crystal X-ray methods. The lattice contains independent monomeric GeCl3- anions (Ge-Cl distances between 2.290 and 2.320 Å, Cl-Ge-Cl angles between 95.33 and 98.27°). Treatment of (Ph3As)AuCl with GeCl2 (dioxane) affords (Ph3As)AuGeCl3 in high yields as a germylene insertion product (2). The complex is a dimer in the crystal with a short Au--Au contact of 2.9415(4) Å and bent As-Au-Ge axes [169.353(13)°]. The GeCl3 ligand has shorter Ge-Cl bonds [2.175 to 2.183 Å] and wider Cl-Ge-Cl angles than in the free anion [100.9 to 101.9°]. The analogous reaction with CH2 (AsPh2AuCl)2 leads only to a mono-insertion product in the form of a salt with {[CH2 (AsPh2)2Au]}22+ dications and two [ClAuGeCl3]- anions (3). In the lattice these three ions form a centrosymmetrical tetranuclear unit through short Au--Au contacts. The resulting z-shaped Au--Au--Au--Au chain has distances of 3.0499(6) (twice) and 3.1613(8) Å and angles of 118.833(8)° (twice). The geometry of the GeCl3 units is similar to that in 2. {(Et3N)Au[P(o-Tol)3]}+ PF6- (4) was obtained as a by-product in several reactions with the bulky phosphine and where NEt3 was used as a base. The crystals contain two crystallographically independent cations with a similar core structure, but different conformations of the substituents. Both the P-Au and the N-Au bonds are elongated owing to steric effects.

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Gold(I) Complexes of Secondary and Tertiary Amines. Crystal Structure of Triphenylphosphineaurio(I)qinuclidinium Tetrafluoroborate

Cited by 19 publications

References 17 publications

The First Acetimine Gold(I) and Gold(III) Complexes and the First Acetonine Complexes

The First Acetimine Gold(I) and Gold(III) Complexes and the First Acetonine Complexes

Bidentate amino- and iminophosphine ligands in mono- and dinuclear gold(I) complexes: Synthesis, structures and AuCl displacement by AuC6F5

The Trichlorogermanite(II) Anion and its Gold(I) Complexes

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