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Ô­ÎÄÈçÏ£ºN,N-dimethylacetamide (dma, 4 mL) containing H2(9H-3,6-
cdc) (25.6 mg, 0.1 mmol) and H2pddb (32.0 mg, 0.1 mmol) was mixed
thoroughly with dma (2 mL) containing Cu(NO3)2¡¤2.5H2O (48.0 mg,
0.2 mmol). 2,6-dimethylpyridine (44.0 mg, 0.4 mmol) was added to
this solution to give a green solution after thorough mixing. The vial
was sealed and allowed to stand at room temperature. After 10 days,
homogeneous blue-green plate-like crystals of 1 were collected

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