Chemistry Reference
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the normal conditions without taking any special precautions. Direct coordination between the metal and
the nitroxyl group appears during the formation of the solid.
13.3.1 Molecular magnets based on 1-D systems
Studies in the field of molecular magnets involve the syntheses of open shell organic, organometalic, or
coordination compounds; their subsequent crystallization from solution into solids, which ideally exhibit
a magnetic phase transition to the ferro-, ferromagnetic, or weak ferromagnetic state, was recorded below
a critical temperature
(
T
c
)
. It is highly desirable that these molecules crystallize to form layered or
CF
3
CF
3
O
O
NN
CF
3
F
3
C
O
O
O
O
O
O
Mn
Mn
O
O
N
N
O
O
F
3
C
CF
3
CF
3
F
3
C
[Mn(hfac)
2
]
2
L
13
CF
3
CF
3
F
3
C
F
3
C
O
O
CF
3
O
O
O
Cu
Cu
O
O
F
3
C
NN
O
O
O
CF
3
F
3
C
CF
3
F
3
C
O
O
O
N
N
O
Cu
Cu
O
CF
3
O
O
O
O
F
3
C
O
F
3
C
CF
3
CF
3
F
3
C
[Cu(hfac)
2
]
4
L
14
O
O
O
O
Cu
O
O
O
Cu
N
N
O
O
N
N
O
O
O
O
O
O
N
O
N
N
N
O
Cu
O
Cu
O
Cu
NN
N
O
N
O
O
O
O
O
O
N
N
O
O
N
N
Cu
O
O
O
O
Cu
O
[Cu(hfac)
2
]
7
(L
15
)
2
O
O
Scheme 13.8
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