Synthetic and structural characterisation of metal complexes of ferrocenylacetylene: novel donor–acceptor heterobimetallic materials

Synthesis, solid state structure and spectro-electrochemistry of ferrocene-ethynyl phosphine and phosphine oxide transition metal complexes

“…This reflects the electron donation by the r-bonded ((FcC"C)Ph 2 P) 2 Pt (5), (Ph 3 P)Au or ((FcC"C)Ph 2 P)Au (9a) units. Similar observations have been reported for a variety of other heterobimetallic ferrocene-ethynyl complexes of platinum [30], gold [31], iron [22][23][24][25][26][27][28][29][30][31][32][33], and ruthenium [31,[33][34][35][36]. (ii) The oxidation potential of 5 is lower than that in [(Tp ind )Ru(g 5 -C 5 (C 6 H 4 -4-C"C-Pt(PEt 3 ) 2 -C"CFc) 5 )] (0.15 V, Tp ind = tris(indazolyl)borate) with a less electron donating alkynyl ligand trans to the ferrocene-ethynyl moiety [37] oxidized Mc + acceptor site [28,30,32,[34][35][36][37]39].…”

“…The oxidation of the (9) 118.35 (15) 110.0(2) C13-P1-Au1 112.60 (8) 110.39 (17) 114.5(2) C19-P1-Au1 114.83 (9) 111.32 (14) 116.4(2) Au1-C25-C26 175.0(4) 169.6(5) (FcC"C)PPh 2 moieties, however, occurs as a single wave or peak at E 0 = +0.24 V with the net transfer of two-electrons. Some findings to support the idea that electronic information is conjugatively transmitted along the p-conjugated MC"CFc chain are: (i) The half-wave potentials of the ferrocene-ethynyl-based waves in [(Ph 3 P)AuC"CFc], 5 and 9a are considerably lower than in parent ethynylferrocene (+0.16 V under our conditions) [28,29]. This reflects the electron donation by the r-bonded ((FcC"C)Ph 2 P) 2 Pt (5), (Ph 3 P)Au or ((FcC"C)Ph 2 P)Au (9a) units.…”

Octahedral hexanuclear silver(I) and copper(I) ferrocenylacetylide complexes

“…The octahedral hexanuclear acetylide complexes with M 2 M 0 4 (M ¼ Pt, Ir; M 0 ¼ Cu, Ag) cluster cores are usually linked by the alkyl or aryl acetylides in l-g 1 ,g 2 (r,p)-coordination mode. In no cases, the octahedral cluster cores are capped by l 3 -g 1 -coordinated acetylides.Ethynylferrocene (HCBCFc) is redox-active and versatile in design of donor-metal-acceptor (D-M-A) compounds with electron transfer properties [7][8][9][10][11][12][13][14][15][16]. The metal cluster complexes of ferrocenylacetylide, however, have been unexplored comparatively [17,18].…”

The luminescent and scintillation properties of YAlO3 and YAlO3:Ce single crystalline films grown by liquid phase epitaxy from BaO‐based flux

“…In recent years, the ethynylferrocene ligand and its derivatives have been used to prepare complexes with Pt II ,295, 303, 304 Mn I ,305 Ru and Os,131, 306–310 [Co 2 (CO) 6 ]276, 311, 312 and titanocene 313. Chemical and electrochemical oxidation leads to heterobinuclear mixed‐valence complexes,314 which can generally be described as Robin and Day “Class II” mixed‐valence species 307…”