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• 593-91-9 trimethylbismuthine 
• 90142-79-3 dichlorocyanomethyl(triphenylphosphine)gold 
• 158532-77-5 Au(NCC₆H₅)2⁽¹⁺⁾*BF₄^(1-) = [Au(NCC₆H₅)2]BF₄ 
• 603-35-0 triphenylphosphine 
• 690229-28-8 bis(2-(azidomethyl)phenyl isocyanide)gold(I) tetrafluoroborate 
• 67215-70-7 (triphenylphosphine)gold(I) tetrafluoroborate 
• 365399-96-8 [Au2Ir(μ-S-S-toluenedithiolate)(η(4)-cyclooctadiene)(PPh3)2]BF4 
• 65423-44-1 (2-diphenylphosphino)benzeneamine 
• 53317-87-6 tris[triphenylphosphinegold(I)]oxonium tetrafluoroborate 

Relevant academic research and scientific papers

Hypercoordinated compounds of gold(I) 1. Synthesis and properties of mon- and binuclear organogold(I) derivatives of diphenyl ether

Mono- and binuclear gold(I) derivatives of ortho-substituted diphenyl ether, C6H5OC6H4AuPPh3 and O(C6H4)2(AuPPh3)2, were prepared by the reaction of the 2,2'-dilithium derivative of diphenyl ether with ClAuPPh3.X-Ray structural study has shown that these compounds contain secondary intramolecular bonds between the gold and oxygen atoms.The interaction of C6H5OC6H4AuPPh3 with (AuPPh3)BF4 affords the BF4 cationic complex.The latter react with PPh3 to give the starting C6H5OC6H4AuPPh3 complex. - Key words: synthesis. diphenyl ether, hypercoordinated organogold(I) compounds, secondary bonds, X-ray diffractional analysis.

[Au(PPH3)2]+[BF4]-

The synthesis and structural characterization of the title compound, bis(triphenylphosphine)gold(I) tetrafluoroborate, [Au(PPh3)2]+[BF4]-, are reported. The BF4- anion does not interact with the Au centre. The coordination geometry about Au is close to linear, with Au-P distances of 2.321 (3) and 2.322 (3) angstrom, and a P1-Au-P2 angle of 167.3 (1)°. The range of P-C distances is 1.787 (10)-1.823 (9) angstrom.

Ligand exchange at a gold(I) carbene complex

Gold complex [AuCl(NHC)] (NHC=N,N′-dipropylbenzimidazolin-2-ylidene) 1 undergoes facile substitution reactions at the gold(I) center. Treatment of 1 with anionic phenylacetylide or thiophenolate led to the neutral gold complexes 2 and 3, respectively. The cationic gold complexes [Au(NHC)(pyridine)](BF 4) [4]BF4 and [Au2(NHC)2(4,4′- bipyridine)](BF4)2 [5](BF4)2 were obtained via abstraction of the chloro ligand from 1 and reaction with the appropriate amine. Reaction of 1 with AgBF4 in the presence of PPh3 instead of an amine led to an inseparable product mixture of the mixed NHC=PPh3 complex [6]BF4, the dicarbene complex [Au(NHC)2]BF4, [7]BF4, and [Au(PPh 3)2]BF4, [8]BF4. Crystals of 2 and [6]BF4 were obtained, and X-ray diffraction structure analyses revealed that the gold(I) atoms are coordinated in a linear fashion by the NHC and the co-ligand.

Isolation of cationic and neutral (allenylidene)(carbene) and bis(allenylidene)gold complexes

The one-electron reduction of a cationic (allenylidene)[cyclic(alkyl) (amino)carbene]gold(i) complex leads to the corresponding neutral, paramagnetic, formally gold(0) complex. DFT calculations reveal that the spin density of this highly robust coinage metal complex is mainly located on the allenylidene fragment, with only 1.8 and 3.1% on the gold center and the CAAC ligand, respectively. In addition, the first homoleptic bis(allenylidene)gold(i) complex has been prepared and fully characterized.

Transition metal coordination and reactivity of 2-(azidomethyl)-, 2-(chloromethyl)- and 2-(iodomethyl)phenyl isocyanides

2-(Azidomethyl)phenyl isocyanide, 2-(CH2N3)C 6H4N≡C (AziNC), coordinates to {M(CO)5} (M=W, Cr) fragments to afford the corresponding isocyanide complexes [M(CO) 5(AziNC)] (M=W (1), Cr (2)). AziNC coordinates also to some Au(I) species such as [AuCl(AziNC)] (3), derived from the reaction of [AuCl(Me 2S)] with AziNC, and [Au(AziNC)2][BF4] (4), obtained from the reaction of 3 with AgBF4, followed by treatment with AziNC. Complexes 1 and 2 undergo the Staudinger reaction with PPh 3 affording the phosphinimine-isocyanide derivatives [M(CO) 5{C≡NC6H4-2-(CH2N=PPh 3)}] (M=W (5), Cr (6)). Complex 6 reacts with H2O affording a mixture of the amino-isocyanide [Cr(CO)5{C≡NC 6H4-2-(CH2NH2)}] (7) and the carbene [Cr(CO)5{CN(H)C6H4-2-CH 2N(H)}] (8) species. Complexes 3 and 4 react with 1 or 2 equiv. of PPh3 displacing the isocyanide with the formation of the complexes [AuCl(PPh3)] (9) and [Au(PPh3)2][BF 4] (10), respectively. The halogeno-isocyanide complexes [W(CO) 5(CNC6H4-2-CH2Cl)] (11) and [W(CO)5(CNC6H4-2-CH2I)] (12) show different reactivity towards amines so that only 12 reacts with MeNH 2 to afford in low yield the N-heterocyclic carbene species [W(CO)5{CN(H)C6H4-2-CH2N(Me)}] (13).

The quest for complexes with a coordinative gold-bismuth bond

In attempts to prepare gold(I) bismuthine compounds of the type R3Bi-AuX with a coordinative Au-Bi bond, the complexes (C4H8S)AuCl, (Me2S)AuCl, (C4H8S)AuC6F5, (Ph3P)-AuCl, and [(Ph3P)Au]BF4 were reacted with the tertiary bismuthines Me3Bi, MePh2Bi, Ph3Bi, (2-MeO-C6H4)3Bi, and (2-Me2NCH2-C6H4)3Bi in different molar ratios in dichloromethane at low temperatures. In all reactions the bismuthines acted as alkylating or arylating agents for gold to give organogold complexes. The products with the sulfur ligands were generally unstable and decomposed above -50°C. With phosphine ligands, the organogold(I) complexes can be traced in the reaction mixtures by NMR spectroscopy. The primary product (Ph3P)-AuPh is aurated further by [(Ph3P)Au]BF4 to give C6H5[Au(PPh3)]2BF4. A stable dinuclear arylgold complex was obtained in the reactions of the thioether complexes with tris(2-((dimethylamino)methyl)phenyl)bismuthine, and the structure of this 10-membered metallacyclic compound has been determined: [-Au-C6H4CH2NMe2-]2. The molecules feature strong transannular aurophilic interactions. The crystal structure of tris(2-methoxyphenyl)-bismuthine has also been determined.

Heteronuclear complexes containing {Au2Rh}, {Au2Ir} and {AuIr} cores with a dithiolate ligand bridging the metal centres - X-ray structures of [Au2Ir(μ-S2C6H4)(cod) (PPh3)2]BF4 and [AuIr(μ-S2C6H3CH3)(cod) (PPh3)]

The use of dinuclear gold derivatives [Au2(μ-S-S)(PR3)2] (S-S = benzenedithiolate, toluenedithiolate; PR3 = PPh3, PPh2Me) as S-donor ligands, with rhodium and iridium complexes [M(cod)2]BF4 (M = Rh, Ir; cod = cyclooctadiene) affords new heteronuclear compounds containing the {Au2M} core, with the general formulation [Au2M(μ-S-S)-(cod)(PR3)2]BF4. One of these decomposes upon heating to give [AuIr(μ-S2C6H4CH3)(cod) (PPh3)]. The crystal structure of the former and [Au2Ir(μ-S2C6H4)(cod) (PPh3)2]BF4 have been established by X-ray diffraction, The sulfur atoms from the dithiolene ligands bridge two different metal centres.

Gold coordination by 2-(diphenyiphosphanyl)aniline

The reaction of 2-(diphenylphosphanyl)aniline (1) with (tetrahydro/hiophene)gold(I) chloride in the molar ratio 1:1 gives a stable molecular complex 2, in which the gold atom is bonded to the phosphorus atom. Reaction of two equivalents of ligand 1 with one equivalent of the salt [(tht)2Au]ClO4 results in the displacement of both thioether ligands, affording the ionic complex {[(2-NH2C6H4)PPh2]2Au}+ ClO4- (3a), in which the metal center is exclusively P-coordinated. Treatment of [(tht)2Au]ClO4 with ligand 1 (1:1) affords the mixed P/S-coordinated complex 4, the structure of which has been confirmed by single-crystal X-ray diffraction. The reaction of ligand 1 with [(Ph3P)Au]+ BF4- leads to a mixture of products which are components of an equilibrium between the unsymmetrical salt ([(2-NH2C6H4)PPh2]Au(PPh 3)}+ BFJ with the two symmetrical species 3b (the BFJ analogue of 3a) and [(Ph3P)2Au]+ BFJ. With {[(Ph3P)Au]3O}+ BFj as the aurating agent, the ligand 1 (molar ratio 1:1) is converted into a polynuclear complex 7, which is tentatively assigned a structure with intimate aggregation of six gold atoms. VCH Verlagsgesellschaft mbH,.

Synthesis and crystal structure of bis(triphenylphosphine)gold tricyanomethanide, +-

A new unusual transformation of tetracyanoethylene (TCE) into a tricyanomethanide anion - has been found.This transformation occurs as a result of action of tris(triphenylphosphinegold)oxonium tetrafluoroborate +B