The µ-oxalato dinuclear compound
[Cu
2
(µ-ox)
![](https://www.rsc.org/images/entities/char_200a.gif)
(deen)
2
(H
2
O)
2
(ClO
4
)
2
]
1 and the derived alternating
µ-oxalato-µ-azido chain
[{Cu
2
(µ-N
3
)
![](https://www.rsc.org/images/entities/char_200a.gif)
(µ-ox)
![](https://www.rsc.org/images/entities/char_200a.gif)
(deen)
2
}
n
]
![](https://www.rsc.org/images/entities/char_200a.gif)
[ClO
4
]
n
2, where
deen = N,N-diethylethane-1,2-diamine, have
been synthesized and characterised. The crystal structures of
1
and
2 have been determined by single-crystal X-ray analysis. Their
magnetic behaviour has been recorded between 300 and 4 K, showing strong
antiferromagnetic coupling in each case. The data were fitted by the
expression for a dinuclear copper(
II) compound giving the
parameters J = -300(3) cm
-1
,
g = 2.15(1) for
1 and
J = -287(1) cm
-1
,
g = 2.28(1) for
2.
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