Synthesis and characterization of ruthenium and osmium complexes of heterocyclic bidentate ligands (N,X), X=S, Se

Synthesis and Structural Characterisation of Diorganotin(IV) and Diphenyllead(IV) Complexes of Pyrimidine‐2‐thionate Derivatives

“…These ligands, besides having solubilising and bulky groups, belong to one of the most versatile types of sulfur ligand in terms of coordination modes. For example, they can act (a) as a neutral monodentate ligand coordinated through the sulfur atom, [24] through one of the nitrogen atoms, [25] and as a bridging ligand through sulfur [26] or as an N,S-chelating ligand, [27,28] or (b) as an anionic ligand, in which case they can be monodentate through the sulfur atom, [29] an N,S-chelating ligand [30][31][32] or Scheme 1. a binuclear bridging ligand through nitrogen and sulfur, [33] or sulfur only, [34] and as a binuclear triply bridging ligand through sulfur and one of the nitrogen atoms, [31,35] or the two nitrogen and sulfur atoms, [36,37] and as a trinuclear triply bridging system. [38] Moreover, these ligands were chosen because they are unsymmetrical ambidentate systems and can therefore give rise to linkage isomerism when they are coordinated in some of the aforementioned ways.…”

Syntheses and Structures of Facial and Meridional Stereoisomers of κ2‐N,S‐Chelated Ruthenium Borate Complexes

“…Note that, in 2015, cis ‐ 4 and cis ‐[(κ 2 ‐ N,S ‐C 3 H 4 NS 2 ) 2 Ru(PPh 3 ) 2 ] complexes were isolated from the thermolysis of [Ru(PPh 3 ) 3 Cl 2 ] with 2‐mercaptobenzothiazole and 2‐mercaptothiazoline, respectively in presence of NEt 3 and was characterized spectroscopically [19] . In addition, earlier Sousa and co‐workers isolated a series of analogous complexes with various heterocyclic bidentate ligands [20] …”

“…[19] In addition, earlier Sousa and coworkers isolated a series of analogous complexes with various heterocyclic bidentate ligands. [20] As complex cis-4 turned out to be interesting and we have obtained solid-state X-ray structure, we wanted to make it in good quantity for further chemistry, in praticular small molecule activation. [16] Thus in an attempt to synthesize cis-4 in a different route, one equivalent of [Ru(PPh 3 ) 3 Cl 2 ] was treated with two equivalents of potassium salt of 2-mercaptobenzothiazole ligand in THF at room temperature (Scheme 2).…”

The Effect of Selenium-Based Ligands on Tungsten Acetylene Complexes

“…13 C NMR (75 MHz, dichloromethane-d 2 ) δ = 250.3 (q, J = 4.8, CO), 246.2 (d, J = 14.0, W�C), 167.7 (pyC-o), 157.2 (pyC-o), 135.3 (t, J CP = 2.0, pyC-p), 130.5 (t, J CP = 1.7, pyC-m), 119.0 (pyC-m), 46.3 (d, 1 J CP = 49.6, CH 2 ), 25.5 (CH 3 ), 19.1 (t, 1 J CP = 14.0, WPCH 3 ), 9.6 (d, 1 J CP = 54.0, PCH 3 ). 31 [WO(CCH 2 PMe 3 )(PMe 3 ) 2 (6-Me-PySe)]Cl (7). [WO(C 2 H 2 )(6-Me-PySe) 2 ] (5, 50 mg, 88 μmol) was dissolved in dichloromethane (6 mL) in a 25 mL Schlenk flask to which PMe 3 (35 μL, 338 μmol) was added.…”