Synthesis and characterisation of PCsp3P phosphine and phosphinite iridium complexes. Cyclometallation and dehydrogenation of a cyclohexyl ring

被引:40
作者
Arunachalampillai, Athimoolam [1 ]
Olsson, Daniel [1 ]
Wendt, Ola F. [1 ]
机构
[1] Lund Univ, Dept Chem, S-22100 Lund, Sweden
基金
瑞典研究理事会;
关键词
DIPHOSPHINITO POCOP COMPLEXES; PCP PINCER COMPLEXES; METAL-CARBON BONDS; C-H; CRYSTAL-STRUCTURES; CATALYTIC DEHYDROGENATION; OXIDATIVE ADDITION; DINITROGEN; AMMONIA; ACTIVATION;
D O I
10.1039/b910798c
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A cyclohexyl based pincer phosphine ligand undergoes cyclometalation with an iridium cyclooctadiene precursor to give a highly thermally stable iridium(III) complex where a C(sp(3))-H bond has been oxidatively added. This iridium(III) hydride complex is reduced with potassium to give a terminal iridium(I) dinitrogen complex with no tendency to dimerization. The corresponding cyclohexyl phosphinite ligand undergoes reversible dehydrogenation to give the aromatic cyclometalated iridium(III) hydride complex together with 3 equivalents of dihydrogen.
引用
收藏
页码:8626 / 8630
页数:5
相关论文
共 48 条
[1]  
[Anonymous], 2005, CRYS RED
[2]  
Athimoolam A., 2008, ORGANOMETALLICS, V27, P4541
[3]   Synthesis of a β-diiminate iridium tetrahydride for arene C-H bond activation [J].
Bernskoetter, WH ;
Lobkovsky, E ;
Chirik, PJ .
CHEMICAL COMMUNICATIONS, 2004, (07) :764-765
[4]   Syntheses and reactivities of new PC(SP3)P pincer complexes of nickel [J].
Castonguay, A ;
Sui-Seng, C ;
Zargarian, D ;
Beauchamp, AL .
ORGANOMETALLICS, 2006, 25 (03) :602-608
[5]   Preparation and Reactivities of PCP-Type Pincer Complexes of Nickel. Impact of Different Ligand Skeletons and Phosphine Substituents [J].
Castonguay, Annie ;
Beauchamp, Andre L. ;
Zargarian, Davit .
ORGANOMETALLICS, 2008, 27 (21) :5723-5732
[6]  
Clusker J. P., 1994, CRYSTAL STRUCTURE AN
[7]   DEHYDROGENATION OF ALKANES TO ARENES BY IRIDIUM COMPLEXES [J].
CRABTREE, RH ;
PARNELL, CP ;
URIARTE, RJ .
ORGANOMETALLICS, 1987, 6 (04) :696-699
[8]   TRANSITION METAL-CARBON BONDS .52. LARGE RING AND CYCLOMETALLATED COMPLEXES FORMED FROM BUT2PCH2CH2CHRCH2CH2PBUT2 (R=H OR ME) AND IRCL3, OR [IR2CL4(CYCLO-OCTENE)4] - CRYSTAL-STRUCTURES OF THE CYCLOMETALLATED HYDRIDE, [IRHCL(BUT2PCH2CH2CHCH2CH2PBUT2)], AND THE CARBENE COMPLEX [IRCL(BUT2PCH2CH2CCH2CH2PBUT2)] [J].
CROCKER, C ;
EMPSALL, HD ;
ERRINGTON, RJ ;
HYDE, EM ;
MCDONALD, WS ;
MARKHAM, R ;
NORTON, MC ;
SHAW, BL ;
WEEKS, B .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1982, (07) :1217-1224
[9]   ELECTRON DIFFRACTION INVESTIGATION OF MOLECULES CONTAINING A CYCLOHEXANE TYPE 6-MEMBERED RING [J].
DAVIS, M ;
HASSEL, O .
ACTA CHEMICA SCANDINAVICA, 1963, 17 (04) :1181-&
[10]   Efficient catalysis of ammonia borane dehydrogenation [J].
Denney, Melanie C. ;
Pons, Vincent ;
Hebden, Travis J. ;
Heinekey, D. Michael ;
Goldberg, Karen I. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (37) :12048-12049