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100
H(Q 7 ) 3 [SiW 11 O 39 Cu] 2-
H 2 (Q 7 ) 2 [SiW 11 O 39 Cu] 2-
((C 5 H 11 ) 4 N)) 4 [SiW 11 O 39 Cu] 2-
80
H 2 (Q 7 ) 2 [SiW 11 O 39 Cu(H 2 O)] 2-
60
40
20
0
1500
1600
1700
1800
1900
2000
2100
Mass (m/z)
Figure 38 ESI-MS spectrum of the middle m/z region of (Q 7 ) 6 [SiW 11 O 39 Cu(H 2 O)] taken in acetonitrile
(concentration ca. 0.1 mM).
found m/z calculated m/z fragment
1780.0146 1780.0627 H 2 (Q 7 ) 2 [SiW 11 O 39 Cu] 2-
4382.9647 4382.9559 H 2 (Q 7 ) 3 [SiW 11 O 39 Cu(H 2 O)] -
1965.2617 1965.2773 ((C 5 H 11 ) 4 N) 4 [SiW 11 O 39 Cu] 2-
1985.2169 1985.2962 H(Q 7 ) 3 [SiW 11 O 39 Cu] 2-
1837.0326 1837.0364 (C 3 H 7 )H 2 (Q 7 ) 2 [SiW 11 O 39 CuBr] 2-
1790.4817 1790.5786 H 2 (Q 7 ) 2 [SiW 11 O 39 Cu(H 2 O)] 2-
Table 8: ESI-MS peak list of assigned fragments in the middle m/z region with corresponding m/z values.
 
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