Supramolecular aggregation patterns in the crystal structures of the dinuclear phosphinegold(i) thiolates, [(Ph₂P(CH₂)₄PPh₂){AuSC(OR)NC₆H₄Y-4}₂] for R = Me, Et or iPr and Y = H, NO₂or Me: the influence on intermolecular interactions exerted by R and Y

Synthesis and structures of gold(I) phosphine complexes containing monoanionic selenocarbamate ester ligands

“…In terms of angles, the Se-C-N angles open up by over 10°to 132.9(10) and 134.1(11)°compared with 122.07 (14)°in the neutral molecule and the remaining angles about the quaternary carbon atom each contracting about 5° [22]. Similar observations were made when comparing geometric parameters of the related thiocarbamate phosphine gold(I) complexes [16][17][18][19] and their neutral precursors [23][24][25] whereupon it was concluded that the anion was functioning as a thiolate ligand. Similar trends are found in the molecular structures of each .…”

“…However, to date no complexes containing deprotonated, monoanionic N-aryl-O-akylselenocarbamate ligands are known. Given that gold(I) phosphine complexes containing ArNHC(S)OMe (Ar = Ph, 4-NO 2 C 6 H 4 ) form a variety of supramolecular structures and are also strongly luminescent [16][17][18][19], we were interested in exploring the so far unknown chemistry of their selenium counterparts, in particular focusing on N-phenyl-O-methylselenocarbamate. The results of this investigation are presented herein [20].…”

Synthesis, structures and in vitro cytotoxicity of some platinum(II) complexes containing thiocarbamate esters

“…92.20(11)°and 87.80(11)°, deviate only very slightly from the 90°e xpected for square planar geometry. Small deviations from the ideal geometry may be traced to the presence of a close intramolecular PÁ Á ÁO1 separation = 3.036(9) Å; such metalÁ Á ÁO interactions are often seen in the structural chemistry of these ligands [8][9][10]. The Pt-P bond length of 2.272(3) Å in 4 is similar to those observed in other PTA metal complexes and in the same way, the Pt-S distance of 2.345(3) Å is similar to that found in other complexes containing S-coordinated aryl thiocarbamate esters.…”

“…The palladium complex [Pd{jN,S-PhN@C(S)OMe}{jS-PhN@C(S)OMe}(PPh 3 )] is the only example in which both coordination modes (anionic S À ligand and N,S-chelate ligand) are present in the same molecule [7]. To the best of our knowledge, the only known complexes of this type that have been prepared by direct reaction of the neutral thiocarbamate esters with transition metal chloride precursors in the presence of base are the above mentioned Pd chelates as well as the mono-and dinuclear gold(I) phosphine complexes [Au{ArN@C(S)OMe}(P)] and [Au 2 {ArN@C(S)OMe} 2 (l-PP)] (P and PP = mono-and bidentate phosphine ligands, respectively) reported by Tiekink [8][9][10]. Ever since the accidental discovery of the cytotoxic properties of cis-[PtCl 2 (NH 3 ) 2 ] by Rosenberg almost 40 years ago [11], cytotoxicity studies of many platinum compounds have been carried out [12].…”

A conformational polymorph of Ph3PAu[SC(OEt)=NPh] featuring an intramolecular Au···π interaction

“…While the interrelationship between the formation of aurophilic (Au···Au) interactions and solid-state luminescence was the focus of this Q1: Please supply first full name of the author "A. Otero-dela-Roza" unless this is the name by which the author is commonly known study, subsequent studies were undertaken to investigate the relationship of small changes in chemistry upon supramolecular association, e.g. for the series [(Ph 2 P(CH 2 ) 4 PPh 2 ){AuSC(OR′)=NC 6 H 4 Y-p} 2 ] for R′ = Me, Et or iPr and Y = H, NO 2 or Me [7]. Particularly relevant to the present study is the series of structures with general formula R 3 PAu[SC(OMe)NR″], for R = Ph, o-tol, m-tol or p-tol, and R″ = Ph, o-tol, m-tol, p-tol or C 6 H 4 NO 2 -p [8].…”