Synthesis, characterisation and optical properties of symmetrical and unsymmetrical Pt(II) and Pd(II) bis-acetylides. Crystal structure of trans-[Pt(PPh3)2(CC–C6H5)(CC–C6H4NO2)]

作者: R D'Amato , A Furlani , M Colapietro , G Portalone , M Casalboni

DOI: 10.1016/S0022-328X(00)00791-9

关键词: Single crystalSubstituentMoleculeLigandCrystallographySpace groupCrystal structurePhotoluminescenceAcetylideChemistry

摘要: Abstract Symmetric trans-[Pt(PPh3)2(CCR)2] and unsymmetrical trans-[Pt(PPh3)2Cl(CCR)], (R=C6H4–pNO2, C6H4–pOCH3), Pt(II) acetylides were prepared characterised, as well bis-acetylides, trans-[Pt(PPh3)2(CCR)(CCR′)], R′=C6H5; R=C6H4–pOCH3, R′=C6H4–pNO2; R=C6H4–pNO2, R′=[(η5-C5H4)Fe(η5-C5H5)]). Also symmetric Pd(II) trans-[Pd(PPh3)2(CCR)2] C6H5) synthesised characterised by IR, NMR, UV–vis spectroscopies. The optical properties of the new complexes compared within a series known containing different phosphines cis–trans configuration. absorption photoluminescence spectra indicate that emission is found in range 355–600 nm, depending on nature acetylide ligand bound to Pt. Measurements SHG for bis-acetylides dispersed polymethylmethacrylate (PMMA) show second-order nonlinear (NLO) depend strength donor–acceptor substituent ligand. Third-order NLO (in particular coefficient α2) measured Z-scan technique; strong push–push pull–pull substituents induce electronic delocalisation tuning properties. single crystal X-ray structure trans-[Pt(PPh3)2(CC–C6H5)(CC–C6H4NO2)] shows molecule crystallised Pbca centric space groups.

参考文章(39)
S. Takahashi, Y. Kuroyama, K. Sonogashira, N. Hagihara, A Convenient Synthesis of Ethynylarenes and Diethynylarenes Synthesis. ,vol. 1980, pp. 627- 630 ,(1980) , 10.1055/S-1980-29145
Harri Takalo, Jouko Kankare, Elina Hänninen, Carmen Vogt, Curt R. Enzell, Jan-Eric Berg, Mihály Bartók, István Pelczer, György Dombi, Synthesis of some substituted dimethyl and diethyl 4-(phenylethynyl)-2,6-pyridinedicarboxylates Acta Chemica Scandinavica. ,vol. 42, pp. 448- 454 ,(1988) , 10.3891/ACTA.CHEM.SCAND.42B-0448
Anita Furlani, Silvia Licoccia, Maria V. Russo, Angiola Chiesi Villa, Carlo Guastini, New platinum hydrido acetylides. Crystal and molecular structure of [PtH{CC–C(OH)MeEt}(PPh3)2] Journal of The Chemical Society-dalton Transactions. pp. 2449- 2453 ,(1982) , 10.1039/DT9820002449
N. Chawdhury, A. Köhler, R. H. Friend, M. Younus, N. J. Long, P. R. Raithby, J. Lewis, Synthesis and Electronic Structure of Platinum-Containing Poly-ynes with Aromatic and Heteroaromatic Rings Macromolecules. ,vol. 31, pp. 722- 727 ,(1998) , 10.1021/MA971267U
Olivier Lavastre, Jan Plass, Petra Bachmann, Salaheddine Guesmi, Claude Moinet, Pierre H. Dixneuf, Ruthenium or Ferrocenyl Homobimetallic and RuPdRu and FePdFe Heterotrimetallic Complexes Connected by Unsaturated, Carbon-Rich −C⋮CC6H4C⋮C− Bridges Organometallics. ,vol. 16, pp. 184- 189 ,(1997) , 10.1021/OM960664A
Domenico Osella, Roberto Gobetto, Carlo Nervi, Mauro Ravera, Rosaria D'Amato, Maria Vittoria Russo, Synthesis and characterisation of bis(ferrocenylethynyl) complexes of platinum (II) A re-investigation of their electrochemical behaviour Inorganic Chemistry Communications. ,vol. 1, pp. 239- 245 ,(1998) , 10.1016/S1387-7003(98)00064-1
Michael C. B. Colbert, Jack Lewis, Nicholas J. Long, Paul R. Raithby, Muhammad Younus, Andrew J. P. White, David J. Williams, Nicholas N. Payne, Lesley Yellowlees, David Beljonne, Nazia Chawdhury, Richard H. Friend, Synthesis and Characterization of Dinuclear Metal σ-Acetylides and Mononuclear Metal σ-Allenylidenes Organometallics. ,vol. 17, pp. 3034- 3043 ,(1998) , 10.1021/OM970130P
P.G. Leviston, M.G.H. Wallbridge, The preparation of some bulky dihalo-, halohydrido- and dihydro-phosphineplatinum(II) compounds Journal of Organometallic Chemistry. ,vol. 110, pp. 271- 279 ,(1976) , 10.1016/S0022-328X(00)89698-9
K. A. Jensen, Zur Stereochemie des koordinativ vierwertigen Nickels Zeitschrift für anorganische und allgemeine Chemie. ,vol. 229, pp. 265- 281 ,(1936) , 10.1002/ZAAC.19362290304