| 155806-11-4

• CAS: 155806-11-4
• 化学式: C₄₇H₄₅IrP₃*F₆P
• 分子量: 1039.98
• InChiKey: MZIAQWRKDDNHNA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  、 苯并噻吩 以 四氢呋喃 为溶剂， 以80%的产率得到
  参考文献：
  名称：

  HDS Model Systems. Coordination, Opening, and Hydrogenation of Benzo[b]thiophene at Iridium

  摘要：

  The eta 4-benzene complexes [(triphos)Ir(C6H6)]Y (Y = BPh(4), 1a; PF6, 1b) react with benzo[b]thiophene (BT) at room temperature to give the unprecedented [(triphos)Ir(eta(3)-C,C,S-C8H6S)]Y (Y = BPh(4), 2a; PF6, 2b) in which intact BT is coordinated to the metal center through the S atom and the C-2=C-3 bond. 2a and 2b are transformed upon mild thermolysis into the iridabenzothiabenzene complexes [(triphos)Ir(eta(2)-C,S-C8H6S)]Y (Y = BPh(4), 3a; PF6, 3b). An X-ray analysis has been carried out on 3a.1.5THF.0.5EtOH. The coordination geometry around iridium may be described as a distorted trigonal-bipyramid, the metal center being surrounded by the three phosphorus atoms of triphos and by a carbon and a sulfur atom from a CS-cleaved BT molecule. Crystal data: triclinic, space group P (1) over bar, a 17.391(3) Angstrom, b = 16.957(4) Angstrom, c = 12.795(3) Angstrom, alpha = 77.51(2)degrees, beta = 80.98(2)degrees, gamma = 75.50(2)degrees, Z = 2, d(calcd) = 1.31 g cm(-3), n(obsd) = 7636, R = 0.072. Interaction of 2a with CO (1 atm, 20 degrees C) yields [(triphos)Ir(CO)(2)]BPh(4) (4) plus free BT, whereas 3a requires more drastic conditions (5 atm, 70 degrees C) to eliminate BT and produce 4. 2a also reacts with H-2 (1 atm, 20 degrees C) to produce [(triphos)Ir(H)(2)(eta(1)-S-BT)]BPh(4) (5), which can be independently prepared by treatment of [(triphos)Ir(H)(2)(THF)]BPh(4) with BT; at 5 atm H-2, free BT is obtained together with [(triphos)Ir(H)(3)], BPh(3), and benzene, as a result of a heterolytic splitting of H-2 at the [(triphos)Ir(H)(2)](+) fragment assisted by the BPh(4)(-), counteranion. The C-S-cleaved BT in 3a is readily hydrogenated (5 atm, 20 degrees C) to 2-ethylbenzenethiolate, producing [(triphos)Ir(H)(2){o-S-(C6H4)C2H5}] (8) plus BPh(3) and benzene also via heterolytic splitting of H-2 assisted by BPh(4)(-), protonolysis of 8 with 2 equiv HCl produces (triphos)IrCl3 with concomitant liberation of 2-ethylbenzenethiol, a primary product of BT HDS. If the PF6- analogue 3b is used instead, the reaction with H-2 under identical conditions yields the thiolate-bridged dimer [(triphos)IrH{mu-o-S(C6H4)C2H5}2HIr(triphos)](PF6)(2) (9b). 3a also reacts with LiHBEt(3) to give [(triphos)Ir(H)(eta(2)-C,S-C8H6S)] (11), which converts in THF solution at 66 degrees C into [(triphos)Ir(eta(3)-S(C6H4)CH=CH2)] (12) by hydride migration to C-2; neither 11 nor 12 react with H-2 under mild conditions. Addition of HBF4.OEt(2) to 12 yields [(triphos)Ir(eta(4)-S(C6H4)C(H)Me)]BF4 (13c), which does react with H-2 even at 1 atm to give the thiolate-bridged dimer [(triphos)IrH{mu-o-S(C6H4)C2H5}2HIr(triphos)](BF4)(2) (9c). 13c also reacts with H- to give [(triphos)IrH(eta(2)-S(C6H4)C(H)Me)] (14), which in turn reacts with H-2 and HBF4.OEt(2) to yield 8 and 9c, respectively.

  DOI：

  10.1021/ja00089a027
• 作为产物：
  描述：

  thallium(I) hexafluorophosphate 、 、 乙炔 以 四氢呋喃 为溶剂， 以>99的产率得到
  参考文献：
  名称：

  Molecular Solid-Gas Organometallic Chemistry. Catalytic and Stoichiometric Iridium-Assisted C-C Bond-Forming Reactions Involving Ethyne and Ethene

  摘要：

  Treatment of crystals of the (eta2-ethene)dihydride complex [(triphos)Ir(H)2(C2H4)]BPh4 (1; triphos = MeC(CH2PPh2)3) with ethyne (4 atm) at 70-degrees-C for 3 h results in evolution of ethene and but-2-ene and formation of five different organometallic products, namely the eta4-benzene complex [(triphos)Ir(eta4-C6H6)]BPh4 (2), the eta4-buta-1,3-diene complex [(triphos)Ir(eta4-C4H6)]BPh4 (3), the eta4-cyclohexa-1,3-diene complex [(triphos)Ir(eta4-C6H8)]BPh4 (4), and the crotyl hydride isomers [(triphos)Ir(H) (eta3-MeC3H4)]BPh4 (5-anti and 5-syn) in a kinetic product ratio of 35:5:23:28:9. At 100-degrees-C, the solid-gas reaction produces catalytic amounts of benzene, the catalyst precursor being the eta4-benzene complex 2. Temperature-programmed reactions carried out in a flow reactor and the use of isolated complexes in independent solid-gas reactions permit mechanistic conclusions which account for the varied organic and organometallic products. The ethene ligand in 1 is an essential ingredient for both cyclotrimerization and cooligomerization reactions of ethyne, which are traversed by eta3-crotyl complexes. Conversely, the ethene ligand is a competitive inhibitor for the reductive dimerization of ethyne to buta-1,3-diene, for which the two hydride ligands are mandatory. Comparison with fluid solution-phase systems provides evidence for the control exerted by the constraining environment of the crystal lattice on the solid-gas reactions.

  DOI：

  10.1021/om00016a020