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Group IX

Another way of replacing chloride trans to phosphine involves using silver salts reaction with AgPF6 and AgN03 introduces, respectively, a water molecule (XII) and a nitrate group (IX), which may in turn be replaced by a range of Lewis bases, giving (VIII), (X) and (XXV). [Pg.152]

Many other transition atoms simply substitute for the standard six-coordinate BH groups. Representative examples are in the seven-, eight-, nine- 45), ten-, eleven-, and twelve-vertex 50) close species displayed as V-, VI-, VII- VIII-, and 1-24 and the group IX-, X-, XI-, and XII-24, which illustrate the diversity possible. [Pg.128]

HV164 Astwood J.D., and R. D. Hill. Molecular characterization of Hor v 9. Conservation of a T-cell epitope among group IX pollen allergens and human VCAM and CD2. Adv Exp Med Biol 1996 409 269-277. [Pg.258]

Tributyl(iodomethyl)tin, 314 By methylenation of carbonyl groups Ix-Chlorobis(cyclopentadienyl)-(dimethylaluminum)-jx-methyl-enetitanium, 71... [Pg.381]

Equipment Soviet Bloc, Group IX , Great Britain War Office MI-10 (1957) 47) H.A. [Pg.224]

Density functional theory modeling of the group IX CpM(CO) intermediates correlates the activation barrier to oxidative addition of a C H bond to the singlet-triplet splitting, AEst, of the 16 electron intermediate. Smaller values of AEst are observed with the lower transition metals in agreement with the ease of oxidative addition. ... [Pg.3772]

Group IX Solid, normal (straight-chain) nitrazaalkanes p(TMD) = 2.114 - 0.1147/... [Pg.71]

Group IX Neutral polar compounds (most containing oxygen)... [Pg.574]

Group IX. Neutral Polar Compounds, Insoluble in Dilute Hydrochloric Acid, Soiubie in Concentrated Suifuric Acid (most compounds containing oxygen)... [Pg.583]

Because they are so inert, diaryl ethers are difficult to detect and may be mistaken for aromatic hydrocarbons. They do not give a positive Ferrox Test, Group IX(e), for ethers, and do not dissolve in concentrated sulfuric... [Pg.585]

Group I Group III Group VII Group IX Group XII Group XIV... [Pg.2449]

Carbonylation of methanol catalyzed by soluble Group IX transition metal complexes remains the dominant method for the commercial production of acetic acid. The Monsanto process stands as one of the major success stories of homogeneous catalysis, and for three decades it was the preferred technology because of the excellent activity and selectivity of the catalyst. It has been demonstrated by workers at Celanese, however, that addition of iodide salts can significantly benefit the process by improving the catalytic reaction rate and catalyst stability at low water concentrations. Many attempts have been made to enhance the activity of... [Pg.38]

Because of polymerization problems with the ketone monomers (II and III) and with monomers containing free carboxylic acid groups (IX), simple derivatives such as (X to XII) were synthesized instead. [Pg.211]

Group IX Molybdenum 46 Vanadium 68.6 Tungsten 92 Tantalium 184. In this group the vanadium is the average between molybdenum and tungsten. The tungsten is equal to 2 of molybdenum and the tantalium was 4 of molybdenum. [Pg.30]


See other pages where Group IX is mentioned: [Pg.30]    [Pg.30]    [Pg.404]    [Pg.447]    [Pg.54]    [Pg.99]    [Pg.140]    [Pg.373]    [Pg.333]    [Pg.320]    [Pg.54]    [Pg.238]    [Pg.133]    [Pg.135]    [Pg.64]    [Pg.193]    [Pg.584]    [Pg.81]    [Pg.586]    [Pg.76]   


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Iron protoporphyrin IX group

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