Synthesis, Photophysical Properties, and Theoretical Studies of Hydride-Alkynyl Platinum(II) Complexes. Molecular Structures of [trans-PtH(C=CC5H4N-2)(PPh3)2 ] and [Pt(eta2-HC=CCPh2OH)(PPh3)2].

  1. Ara, I. 2
  2. Berenguer, J.R. 1
  3. Eguizábal, E. 1
  4. Forniés, J. 2
  5. Gómez, J. 1
  6. Lalinde, E. 1
  7. Sáez-Rocher, J.M. 1
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 Instituto de Nanociencia y Materiales de Aragón
    info

    Instituto de Nanociencia y Materiales de Aragón

    Zaragoza, España

    ROR https://ror.org/031n2c920

Aldizkaria:
Organometallics

ISSN: 0276-7333

Argitalpen urtea: 2000

Alea: 19

Zenbakia: 21

Orrialdeak: 4385-4397

Mota: Artikulua

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DOI: 10.1021/OM000143U SCOPUS: 2-s2.0-0034299148 WoS: WOS:000090086200027 GOOGLE SCHOLAR

Beste argitalpen batzuk: Organometallics

Gordailu instituzionala: lock_openSarbide irekia Editor

Garapen Iraunkorreko Helburuak

Laburpena

A series of mononuclear, [+- cms-PtH(C=CR)(PPh3)2] (R = C5H4N-2 (1), (6-C=CH)C5H3N-2 (2), C6H4NH2-4 (3), (4-C=CH)C6H4 (4), (CH2)5C=CH (5)), and binuclear, [frans,*rans-(PPh3)2HR{/*-a:a-(CC)2R}PtH(PPh3)2] (R = C5H3N-2 (7), C6H4-1,4 (8)), hydride-alkynyl platinum complexes has been prepared in good to moderate yields from the reactions of [Jrans-PtHCl(PPh3)2] with an excess of the corresponding alkyne in the presence of an excess of NEt2H and from the reactions of Ura7is-PtHCl(PPh3)2] .with 1 equiv of 2 or 4 in the presence of diethylamine. An analogous reaction with HC=CCPh2OH leads to a mixture of [Jrans-PtH(C=CCPh2OH)(PPh3)2] (6a) and [Pt(7/2-HC=CCPh2OH)(PPh3)2] (6b). The binuclear diyne complex [{(PPh3)2Pt}2{/(-?;2:7;2-(C=CH)2C6H4-l,4}] (9), prepared in high yield from [Pt(?;2C2H4)(PPh3)2] and HC=CCeH4-l,4-C=CH (0.5 equiv), is also formed in the reaction leading .to 8. Complexes 5, 7, and 8 have been used as precursors to form the mixed-valence Pt(II)Pt(0) complexes 10-12. The spectroscopic characterization of the complexes and X-ray crystal structure determination of 1 and 6b are included. Their absorption and some selected emission spectra, examined on the basis of theoretical studies (EHMO), are also reported. © 2000 American Chemical Society.