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Figure 1
Representation of the hy­dro­gen-bonded heterosynthons formed between 2,2′-bi­imid­az­ole mol­ecules (free and coordinated) with the different com­plementary moieties (carb­oxy­lic acid, carboxyl­ate and halogen). An isographic R22(9) graph set can be designated for Ia, Ib, Ic and Id, while an R21(7) graph set is assigned for Ie and If (Etter et al., 1990BB18).

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
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