Tetranuclear platinum phosphido complexes with different structures

被引:27
|
作者
Forniés, J [1 ]
Fortuño, C [1 ]
Gil, R [1 ]
Martín, A [1 ]
机构
[1] Univ Zaragoza, Inst Ciencia Mat Aragon, Dept Quim Inorgan, CSIC, E-50009 Zaragoza, Spain
关键词
D O I
10.1021/ic051248y
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The addition of [NBU4]Br or [NBU4][BH4] to solutions of [Pt-4(mu-PPh2)(4)(C6F5)(4)(CO)(2)] (3) yields the complexes [NBU4](2)[Pt-4(mu-PPh2)(4)(u-X)(2)(C6F5)(4)] (X = Br, 4; H, 5) in which the two CO groups have been replaced by two anionic, bridging X ligands. The total valence electron counts are 64 and 60, respectively; thus, complex 4 does not require Pt-Pt bonds, while two metal-metal bonds are present in 5, as their NMR spectra confirm. Also, the NMR spectra indicate a nonsymmetrical "Pt(mu-PPh2)(2)Pt(mu-PPh2)(mu-X)Pt(mu-PPh2)(mu-X)Pt" disposition for 4 and 5. Treatment of 5 with HX (X = Cl, Br) yields the complexes [NBU4](2)[Pt-4(mu-PPh2)(4)(mu-H)(2)(C6F5)(3)X] (X = Cl, 6; Br, 7). These complexes react with [Ag(OClO3)PPh3] with displacement of the halide and formation of [NBU4][Pt-4(mu-PPh2)(4)(u-H)(2)(C6F5)(3)PPh3] (8). Complexes 6-8 maintain the same basic skeleton as 5, with two Pt-Pt bonds. Complex 4 is, however, an isomer of the symmetric [NBU4](2)[{(C6F5)(2)Pt(mu-PPh2)(2)Pt(mu-Br)}(2)] (9), which has been prepared by a metathetical process from the well-known [NBU4](2)[{(C6F5)(2)Pt(mu-PPh2)(2)Pt(mu-Cl)}(2)] (1). The comparison of the X-ray structures of 4 and 9 confirms the different disposition of the bridging ligands, and their main structural differences seem to be related to the size of Br- and its position in the skeleton.
引用
收藏
页码:9534 / 9541
页数:8
相关论文
共 50 条
  • [1] Inversion at phosphorus in platinum phosphido complexes
    Glueck, DS
    Wicht, DK
    LiableSands, L
    Rheingold, AL
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1997, 213 : 224 - INOR
  • [2] Phosphido pincer complexes of platinum: synthesis, structure and reactivity
    Mazzeo, Mina
    Strianese, Maria
    Kuehl, Olaf
    Peters, Jonas C.
    DALTON TRANSACTIONS, 2011, 40 (35) : 9026 - 9033
  • [3] Modern aspects on tri- and tetranuclear cluster complexes supported by phosphido bridges
    Haupt, HJ
    PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-CHEMICAL SCIENCES, 2000, 112 (03): : 209 - 213
  • [4] Modern aspects on tri- and tetranuclear cluster complexes supported by phosphido bridges
    Haupt H.-J.
    Journal of Chemical Sciences, 2000, 112 (3) : 209 - 213
  • [5] Protonation of tetranuclear platinum(III) phthalimide complexes
    Belyaev, AN
    Simanova, SA
    Gorlov, MY
    Shchukarev, AV
    RUSSIAN JOURNAL OF APPLIED CHEMISTRY, 1996, 69 (05) : 659 - 663
  • [6] Protonation of tetranuclear platinum(III) phthalimide complexes
    St. Petersburg State Technological Institute, St. Petersburg, Russia
    Russ. J. Appl. Chem., 5 (659-663):
  • [7] Chiral platinum duphos terminal phosphido complexes: Synthesis, structure, phosphido transfer, and ligand behavior
    Scriban, Corina
    Glueck, David S.
    DiPasquale, Antonio G.
    Rheingold, Arnold L.
    ORGANOMETALLICS, 2006, 25 (22) : 5435 - 5448
  • [8] PHOSPHIDO- + ARSENIDO-BRIDGED COMPLEXES OF PLATINUM(11)
    CHATT, J
    DAVIDSON, JM
    JOURNAL OF THE CHEMICAL SOCIETY, 1964, (JUL): : 2433 - &
  • [9] Terminal platinum(II) phosphido complexes: Synthesis, structure, and thermochemistry
    Wicht, DK
    Paisner, SN
    Lew, BM
    Glueck, DS
    Yap, GPA
    Liable-Sands, LM
    Rheingold, AL
    Haar, CM
    Nolan, SP
    ORGANOMETALLICS, 1998, 17 (04) : 652 - 660
  • [10] MIXED, NEUTRAL-CHARGED, PLATINUM PLATINUM AND PLATINUM PALLADIUM MACROCYCLIC TETRANUCLEAR COMPLEXES
    STANG, PJ
    WHITEFORD, JA
    ORGANOMETALLICS, 1994, 13 (10) : 3776 - 3777