Synthesis, structures and properties of platinum(II) complexes of oligoacetylenic sulfides

Formation of multifunctional ligands by nucleophilic addition of alcohols and thiols to the alkyne groups in compound C5H5FeC5H4CCSCCH: Reactivity studies

“…10(16)] [7], trans-[Ph(Et 3 P) 2 PtC"CSC"CPt-(Et 3 P) 2 Ph] [105.0(3)] and cis-[Pt(Me 2 bipy){C"CSC"CSi i Pr 3 } 2 ] [105. 4(9)] [13]. The ferrocenyl group shows an almost-perfect eclipsed geometry with its rings.…”

“…According to the mechanisms described for these authors, we agree that once the complex [{Co 2 (CO) 6 } 2 (l-g 2 :g 2 -FcCCSCCH)] is formed, it can react with a molecule of the alkyne [{Co 2 (CO) 6 }(l-g 2 -FcCCSC"CH)] followed by another molecule of the ferrocenyl alkyne [{Co 2 (CO) 6 }(l-g 2 -FcC"CSCCH)] to give the trimerization product [{Co 2 (CO) 6 } 3 -(l-g 2 -FcCCS) 2 (l-g 2 -HCCS)]C 6 H 2 Fc after demetallation. Its spectroscopic and spectrometric data are the following: IR (m CO 2092m, 2061 s, 2030 vs), 1 H NMR {7.19 (s, 2H, C 6 H 2 ), 6.77 (s, 1H, HC"C), 4.54-4.36 (m, 12H, C 5 H 4 ), 4.34 (s, 5H, C 5 H 5 ), 4.31 (s, 5H, C 5 H 5 ), 4.20 (s, 5H, C 5 H 5 }, MS(ESI + ) m/z: 1488-1152 (M + ÀnCO, n = [6][7][8][9][10][11][12][13][14][15][16][17][18].…”

“…In both cases a coupling constant of 8.0 Hz suggests a cis geometry. In order to make an accurate assignment of the 13 (4), C 6 F 5 (6)] are obtained from analogous reactions by using a big excess of the HSR instead (Scheme 1). The 1 H and 13 C{ 1 H} NMR data are indicative of the presence in the molecule of two olephinic groups as a consequence of a double hydrothiolation (see Section 4) and they are in the range expected for comparable derivatives [17].…”

“…13 The experimental procedure is analogous to the before mentioned for HSPh, although in this case the reaction was stirred for 22 h. The crude was chromatographed on silica gel. Elution with hexane/CH 2 Cl 2 50:1 gave a mixture of isomers of the compound [(Z)-FcC"CSC(H)@C(H)SC 6 F 5 ] 5 (87 mg, 0.23 mmol, 61%) in a 2:1 ratio.…”

Luminescent 1D- and 2D-Coordination Polymers Using CuX Salts (X = Cl, Br, I) and a Metal-Containing Dithioether Ligand

“…The organometallic synthons trans -Pt­(CC) 2 (PR 3 ) 2 ( [Pt] ; R = aryl, achiral, or chiral alkyl) and M–M-bonded Pt 2 (dppm) 2 (CC) 2 ( [Pt 2 ] ; dppm = (Ph 2 P) 2 CH 2 )) are known to respectively form moderately and strongly conjugated polymers (Chart ). The relative amplitude of electronic coupling between the anchoring groups attached to the ethynyl functions are well-known from electrochemical investigations, using redox-active ferrocenyl probes, and from photophysical measurements .…”