ACS Catalysis
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(44) Continuous addition of diluted H2 (5% with N2) gave a lower
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H)2][BArF ]2 complex 14. See supporting materials for the solid–state
4
structure. It is likely that in the solid–state alkane loss by subsitution by
H2 occurs to give a mono–metallic {RhH2}+ fragment that then
dimerises on dissolution in CH2Cl2. Interestingly, the solid–state
prepared material retains activity for butene isomerization while the
recrystallized material does not (Fig. S66), suggesting dissoloving in
CH2Cl2 quenches vacant sites on the metal centre by dimerization. For
an iridium analogue to 14 see: Chadwick, F. M.; Olliff, N.; Weller, A.
S. A convenient route to a norbornadiene adduct of iridium with
chelating phosphines, [Ir(R2PCH2CH2PR2)(NBD)][BArF ] and
a
4
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