Synthesis and characterisation of new platinum–acetylide complexes containing diimine ligands

Adams, Christopher J.; James, Stuart L.; Liu, Xiaoming; Raithby, Paul R.; Yellowlees, Lesley J.

doi:10.1039/a907028a

Cited by 81 publications

(61 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While (R 3 P) 2 Pt entities are usually regarded as insulating [30,40,41], some accounts of p-delocalization along the RC"C-Pt-C"CR axis in trans-dialkynyl platinum complexes have already appeared [38,39,[42][43][44].…”

Section: Resultsmentioning

confidence: 99%

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

Jakob

Ecorchard

Linseis

et al. 2009

Journal of Organometallic Chemistry

View full text Add to dashboard Cite

a b s t r a c tThe synthesis of ferrocene-ethynyl phosphine platinum dichloride complexes based on (FcC"C) n Ph 3Àn P (1a, n = 1; 1b, n = 2; 1c, n = 3; Fc = ferrocenyl, (g 5 -C 5 H 5 )(g 5 -C 5 H 4 )Fe) is described. Air-oxidation of 1c afforded (FcC"C) 3 P@O (6). Treatment of 1a-1c with [(PhC"N) 2 PtCl 2 ] (2) or [(tht)AuCl] (tht = tetrahydrothiophene) (7), respectively, gave the heterometallic transition complexes cis-[((FcC"C) n Ph 3Àn P) 2 PtCl 2 ] (3a, n = 1; 3b, n = 2; 3c, n = 3) or [((FcC"C) n PPh 3Àn )AuCl] (8a, n = 1; 8b, n = 2). Further treatment of these molecules with HC"CMc (4a, Mc = Fc; 4b, Mc = Rc = (g 5 -C 5 H 5 )(g 5 -C 5 H 4 )Ru) in the presence of [CuI] produced trans-[((FcC"C)Ph 2 P) 2 Pt(C"CFc) 2 ] (5) (reaction of 3a with 4a) and [(FcC"C) n Ph 3Àn PAuC"CMc] (n = 1: 9a, Mc = Fc; 9b, Mc = Rc; n = 2: 11a, Mc = Fc; 11b, Mc = Rc) (reaction of 4a, 4b with 8a, 8b), respectively.The structures of 3a, 5, 6, 8, 9a, and 9b in the solid state were established by single-crystal X-ray structure analysis. The main characteristic features of these molecules are the linear phosphorus-gold-acetylide arrangements, the tetra-coordination at phosphorus and the square-planar surrounding at platinum.The electrochemical and spectro-electrochemical behavior of complexes 5, 8a, 9a, 9b and [(Ph 3 P)AuC"CFc] was investigated in the UV/Vis/NIR. Near IR bands that are likely associated with charge transfer from the ((FcC"C)Ph 2 P) 2 Pt or the ((FcC"C) n Ph 3Àn P)Au (n = 0, 1) moieties appear upon oxidation of the r-bonded ferrocene-ethynyl groups. These bands undergo a (stepwise) blue shift as ferrocene-ethynyl substituents on the phosphine coligands are oxidized.

show abstract

Section: Resultsmentioning

confidence: 99%

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

Jakob

Ecorchard

Linseis

et al. 2009

Journal of Organometallic Chemistry

View full text Add to dashboard Cite

show abstract

“…The bond lengths Pt-C, Pt-N and CuC are slightly different in the two crystallographically independent molecules of complex 2 but they remain close to those discussed above for complex 1 (Table 1) or to the related Pt(II) diimine acetylide complex. 16 A larger C-Pt-C angle (91.02(34)°and 92.21(24)°) is observed in the two molecules of complex 2 and can be explained by the peculiar orientation of the TTF moieties in this complex.…”

Section: Molecular Structuresmentioning

confidence: 93%

Cis and trans-bis(tetrathiafulvalene-acetylide) platinum(ii) complexes: syntheses, crystal structures, and influence of the ancillary ligands on their electronic properties

et al. 2013

View full text Add to dashboard Cite

A series of four platinum(II) complexes bearing two tetrathiafulvalene acetylide ligands coordinated either cis or trans to the metal center are reported: cis-Pt(bipy)(C≡CMe(3)TTF)(2), cis-Pt(tBu(2)bipy)(C≡CMe(3)TTF)(2), cis-Pt(dppe)(C≡CMe(3)TTF)(2) and trans-Pt(PPh(3))(2)(C≡CMe(3)TTF)(2). The X-ray diffraction studies of the four complexes are reported and discussed. The electrochemical investigations carried out by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) evidenced different redox behavior as a function of the ancillary ligand. Only for the cis-Pt(dppe)(C≡CMe(3)TTF)(2) complex is the first oxidation wave resolved (ΔE = 70 mV) into two one-electron processes. Spectroelectrochemical investigations performed on the four complexes did not evidence any electronic interactions between the two organic electrophores. The splitting of the first oxidation wave observed in cis-Pt(dppe)(C≡CMe(3)TTF)(2) is mainly explained by the non-equivalence of the two TTF moieties induced by the geometrical constraint imposed by the ancillary dppe ligand as found by density functional theory calculations.

show abstract

“…[21] The CϵC bond length of 1.193 Å is similar to those of the other related platinum() acetylide complexes. [12,21,30] The phenyl ring of the acetylide ligand is almost coplanar to the platinum-terpyridine plane, with a dihedral angle of 4.5°. The crystal packing of 1 reveals a head-to-tail stacking between pairs of complex cations.…”

Section: Crystal Structure Of Complexmentioning

confidence: 99%

Switch of the Lowest Excited‐States of Terpyridylplatinum(II) Acetylide Complexes Bearing Amino or Azacrown Moieties by Proton and Cations

Yang

Tong

et al. 2004

Eur J Inorg Chem

View full text Add to dashboard Cite

The investigation of the synthesis and unique photophysical properties of two terpyridylplatinum(II) acetylide complexes [Pt(terpy)(CϵCC 6 H 4 -4-R)] where terpy is 2,2Ј:6Ј,2ЈЈ-terpyridyl and R = N(CH 3 ) 2 (1) or N-15-monoazacrown-5 (2) has been carried out. These complexes exhibit an absorption band in the region of 460−650 nm in neutral or basic solution that corresponds to a ligand-to-ligand charge transfer (LLCT) transition from the amino-substituted acetylide to the terpyridyl acceptor. In acidic solutions the complexes show the lowest-energy absorption band at 380−500 nm, which is assign-

show abstract

Synthesis and characterisation of new platinum–acetylide complexes containing diimine ligands

Cited by 81 publications

References 25 publications

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

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

Cis and trans-bis(tetrathiafulvalene-acetylide) platinum(ii) complexes: syntheses, crystal structures, and influence of the ancillary ligands on their electronic properties

Switch of the Lowest Excited‐States of Terpyridylplatinum(II) Acetylide Complexes Bearing Amino or Azacrown Moieties by Proton and Cations

Contact Info

Product

Resources

About