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Vaska’s compounds

Vaska s compound, tri7rt5-[Ir(CO)(Ph3P)2Cl]. Undergoes ready oxidative addition to give Ir(IlI) complexes. [Pg.418]

The facile absorplion of O2 by a. solulion of Vaska s compound is accompanied by a change in colour from yellow to orange which may be reversed by flushing wiih Ni. This... [Pg.1136]

The 1961 report that Vaska s compound (IrCl(CO)(PPh3)2) reversibly binds dioxygen sparked off an intense study of addition reactions of this and related compounds that has continued unabated up to the present day [125], Vaska s compound may be prepared as yellow air-stable crystals by various reactions, such as conventional substitution... [Pg.135]

Figure 2.73 Structural data for Vaska s compound and its adducts. Figure 2.73 Structural data for Vaska s compound and its adducts.
Table 2.6 Formation of 6-coordinate products from Vaska s compound... Table 2.6 Formation of 6-coordinate products from Vaska s compound...
Figure 2.75 Oxidative addition of dihydrogen to Vaska s compound. Figure 2.75 Oxidative addition of dihydrogen to Vaska s compound.
Iridium(I) can stabilize unusual species like CS, and SO, as well as N2. The dinitrogen analogue of Vaska s compound is conveniently made as shown in Figure 2.80 [143],... [Pg.143]

IrCl(NO)(PPh3)2]+ is the nitrosyl analogue of Vaska s compound [183]. These are various synthetic routes to it... [Pg.165]

Counting NO as a three-electron donor, [IrCl(NO)(PPh3)2]+ is, therefore, a 16-electron species isoelectronic with Vaska s compound, isolable as a red crystalline hexafluorophosphate (m.p. 211°C, i/(N-0) 1870 cm-1) or similar perchlorate and tetrafluoroborate a trans-structure is indicated by spectroscopic data, and it is presumed to have a linear Ir-N-0 grouping. [Pg.166]

The reaction of Vaska s compound (46) with diazomethane was reported in 1966 (81). A diethyl ether suspension of 46 afforded chloromethyl complex 52 on treatment with CH2N2 at -30°C, and a d6 iridium methylene complex 51 was proposed as the likely intermediate ... [Pg.157]

Vaska s compound may be prepared as yellow air-stable crystals by various reactions, such as conventional substitution... [Pg.151]

Another important complex is trans-11r(Pr >3)2CX )CI11, which is known as Vaska s compound. This complex undergoes a large number of oxidative addition reactions, because Ir+ is easily oxidized to Ir3+ and... [Pg.782]

Kinetic data are available for the oxad reaction of CH3I with a series of complexes that are derivatives of Vaska s compound, rans-IrCl(CO)L2 where L = P3, PHt( >2, PEt2[Pg.786]

See other pages where Vaska’s compounds is mentioned: [Pg.221]    [Pg.1048]    [Pg.182]    [Pg.1134]    [Pg.1135]    [Pg.44]    [Pg.100]    [Pg.135]    [Pg.135]    [Pg.166]    [Pg.372]    [Pg.246]    [Pg.203]    [Pg.206]    [Pg.206]    [Pg.211]    [Pg.59]    [Pg.115]    [Pg.151]    [Pg.151]    [Pg.183]    [Pg.785]    [Pg.322]   
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See also in sourсe #XX -- [ Pg.615 , Pg.616 , Pg.1135 , Pg.1136 ]

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Vaska’s compound reactions

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