C-H activation by a diplatinum(II) complex:: Isolation and structures of [Pt2(CH3)(SMe2)Ph2(ttab)][BAr′4] and [Pt2(H2O)2Ph2(ttab)][BAr′4]2 (ttab=1,2,4,5-tetrakis(1-N-7-azaindolyl)benzene)

被引:23
作者
Song, DT [1 ]
Jia, WL [1 ]
Wang, SM [1 ]
机构
[1] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada
关键词
D O I
10.1021/om0341449
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The dinuclear Pt(II) complex Pt-2(CH3)(4)(ttab) (1; ttab = 1,2,4,5-tetrakis(1-N-7-azaindolyl)benzene) has been found to activate multiple benzene molecules by cleaving a C-H bond in the presence of[H(Et2O)(2)][BAr'(4)] (Ar' = 3,5-bis(trifluoromethyl)phenyl). The unprecedented dinuclear Pt(H) product [Pt-2(CH3)(SMe2)Ph-2(ttab)][BAr'(4)] (2), which contains two phenyl groups on one Pt(H) center, has been isolated from the 1:1 reaction of 1 with [H(Et2O)(2)][BAr'(4)]. The novel dinuclear Pt(H) complex [Pt-2(H2O)(2)Ph-2(ttab)][BAr'(4)](2) (3) has been isolated from the 1:2 reaction of 1 with [H(Et2O)(2)][BAr'(4)] when reagent-grade solvents were used in the recrystallization process. The structures of 2 and 3 have been established by X-ray diffraction analyses.
引用
收藏
页码:1194 / 1196
页数:3
相关论文
共 16 条
[1]   [(3,5-(CF3)2C6H3)4B]-[H(OET2)2]+ - A CONVENIENT REAGENT FOR GENERATION AND STABILIZATION OF CATIONIC, HIGHLY ELECTROPHILIC ORGANOMETALLIC COMPLEXES [J].
BROOKHART, M ;
GRANT, B ;
VOLPE, AF .
ORGANOMETALLICS, 1992, 11 (11) :3920-3922
[2]   Intramolecular and intermolecular C-H activation at a cationic PtII center [J].
Holtcamp, MW ;
Henling, LM ;
Day, MW ;
Labinger, JA ;
Bercaw, JE .
INORGANICA CHIMICA ACTA, 1998, 270 (1-2) :467-478
[3]   C-H activation at cationic platinum(II) centers [J].
Holtcamp, MW ;
Labinger, JA ;
Bercaw, JE .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (04) :848-849
[4]   Reductive elimination/oxidative addition of carbon-hydrogen bonds at Pt(IV)/Pt(II) centers:: Mechanistic studies of the solution thermolyses of TpMe2Pt(CH3)2H [J].
Jensen, MP ;
Wick, DD ;
Reinartz, S ;
White, PS ;
Templeton, JL ;
Goldberg, KI .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (28) :8614-8624
[5]   Mechanistic investigation of benzene C-H activation at a cationic platinum(II) center: Direct observation of a platinum(II) benzene adduct [J].
Johansson, L ;
Tilset, M ;
Labinger, JA ;
Bercaw, JE .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (44) :10846-10855
[6]   Unexpected selectivities in C-H activations of toluene and p-xylene at cationic platinum(II) diimine complexes.: New mechanistic insight into product-determining factors [J].
Johansson, L ;
Ryan, OB ;
Romming, C ;
Tilset, M .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (27) :6579-6590
[7]   Evidence for associative methane loss following protonation of (diimine)PtII(CH3)2:: Three-coordinate 14-electron cations L2Pt(CH3)+ are not necessarily intermediates in C-H activation at cationic Pt complexes [J].
Johansson, L ;
Tilset, M .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (04) :739-740
[8]   C-H activation and C-C coupling of arenes by cationic Pt(II) complexes [J].
Konze, WV ;
Scott, BL ;
Kubas, GJ .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (42) :12550-12556
[9]   Barriers for arene C-H bond activation in platinum(II) η2-arene intermediates [J].
Norris, CM ;
Reinartz, S ;
White, PS ;
Templeton, JL .
ORGANOMETALLICS, 2002, 21 (25) :5649-5656
[10]   Activation volume measurement for C-H activation. Evidence for associative benzene substitution at a platinum(II) center [J].
Procelewska, J ;
Zahl, A ;
van Eldik, R ;
Zhong, HA ;
Labinger, JA ;
Bercaw, JE .
INORGANIC CHEMISTRY, 2002, 41 (11) :2808-2810