Synthesis of the first complex with acetonine as ligand: the first crystal structure of an acetonine derivative

Abstract

The complex [Au(acetonine) 2 ]ClO 4 (3•ClO 4 ) (acetonine = 2,2,4,4,6-pentamethyl-2,3,4,5-tetrahydropyrimidine) is obtained by bubbling NH 3 through an acetone solution containing equimolar amounts of NaClO 4 and [AuCl(tht)] (tht = tetrahydrothiophene); the crystal structure of 3•ClO 4 was determined by X-ray crystallography.

Synthesis of a Dinuclear Platinum−Silver Complex Containing a Reactive Acetone Imine Prepared in Situ from Acetone and Ammonia and Stabilized by Metal Complexation

“…The C26−C27 and C26−C28 distances (1.443(29) and 1.537(31) Å, respectively) are those expected for C−C single bonds. The C−N distance is the usual one for a CN double bond and is very similar to those observed in the tungsten (1.284(7) Å) 19 and gold derivatives (1.271(7) and 1.285(8) Å) , but longer than the distance found in the ruthenium complex (1.16(2) Å) …”

“…[23][24][25] The dihedral angle between the platinum coordination plane and the azaindolato plane is 65.7(3)°. The angles between the C 6 F 5 rings and the platinum coordination plane are 75.2(4)°f or the C1 group, 68.2(4)°for the C7 group, and 57.2- 7) Å) 19 and gold derivatives (1.271(7) and 1.285(8) Å) 21,27 but longer than the distance found in the ruthenium complex (1.16(2) Å). 20 The range of angles around these carbon atoms is characteristic of sp 2 hybridization and quite similar to that observed in the tungsten (116.6(5)-122.6(5)°) and gold complexes (116.9(6)-120.4(7)°), in sharp contrast to the range of values obtained for the ruthenium complex (99-148°).…”

“…Very recently the acetone imine gold complex [Au(NHCMe 2 ) 2 ]CF 3 SO 3 has been prepared by reaction of NH 3 with ketones 21 in a pathway which also requires CN bond formation. Some other acetone imine gold complexes have been obtained from this compound. , …”

Self-Assembly of Amino−Thiols via Gold−Nitrogen Links and Consequence for in situ Elongation of Molecular Wires on Surface-Modified Electrodes

“…2.0 Å, which is consistent with the lower end of the bond length range from X-ray crystallographic studies of gold complexes (1.94 Å e L Au-N e 2.25 Å). 30,37,[55][56][57][58][59][60][61][62] In contrast, the peak at 399.1 eV for SAM 1, which is customary for amines on gold, [22][23][24] corresponds to a longer bonding distance of ca. 2.1 Å and is in reasonable agreement with 2.157 Å obtained for the Au-NH 2 motif in the X-ray crystal structure of the Au(III) complex of 2-(diphenyl-thiophosphino)aniline.…”

Synthesis and characterisation of N-coordinated pentafluorophenyl gold(i) thiazole-derived complexes and an unusual self-assembly to form a tetrameric gold(i) complexElectronic supplementary information (ESI) available: Characterisation data for 1. See http://www.rsc.org/suppdata/dt/b3/b303625a/

“…This result supports the structures [Au{N᎐ ᎐ C(C᎐ ᎐ CHCH᎐ ᎐ CHS)OCH 2 C(CH 3 ) 2 } 2 ] ϩ and C 6 F 5 Au[N᎐ ᎐ C(C᎐ ᎐ CHCH᎐ ᎐ CHS)OCH 2 C(CH 3 ) 2 ] proposed in previous work. 9 The generalization sometimes made that gold() prefers S-donor to N-donor ligands [15][16][17] should thus be treated with caution as demonstrated by the many Au() imine [17][18][19][20][21][22][23][24][25] and amine 16,17,26-29 complexes, prepared mostly from Au() thioether complexes, 16-18,20-22,24-27 isolated and character- † Electronic supplementary information (ESI) available: Characterisation data for 1. See http://www.rsc.org/suppdata/dt/b3/b303625a/ ised in recent years.…”