Chemistry Reference
In-Depth Information
Fig. 28 (a) DFT-calculated energy diagrams (M06/SDD6-31G(d,p)//B3LYP/SDD6-31G(d,p)
level of theory) for ion-molecule reactions of iodobenzene with [Au
3
L
n
]
+
(L=Ph
2
P(CH
2
)
n
PPh
2
;
n
= 3-6); (b) key species for reaction of [Au
3
L
5
]
+
. Figure reproduced from [
291
]
Scheme 1 Isolobal analogy illustrated for H
3
+
4.2.1 Gold Hydride Cluster Ions
Gold hydrides have been implicated as reactive intermediates in the transformation
of organic substrates, but few have been isolated and structurally characterised
[
299
]. While the bare coinage metal hydrides M
2
H
+
(where M
Cu and Ag) have
been formed via CID of suitable precursors such as amino acids [
300
,
301
], Au
2
H
+
has not yet be reported. The phosphine-ligated gold hydrides, (R
3
PAu)(R
0
3
PAu)H
+
(where R
¼
R
0
¼
R
0
¼
Me and R
0
¼
¼
Ph; R
¼
Me; R
¼
Ph) 2, can be prepared in the gas
