One‐Dimensional Channels Encapsulated in Supramolecular Networks Constructed of Zinc(II), Manganese(II), or Nickel(II) Atoms with 3‐(Carboxymethyl)‐2, 7‐dimethyl‐3H‐benzo[d]imidazole‐5‐carboxylic Acid
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Titel:
One‐Dimensional Channels Encapsulated in Supramolecular Networks Constructed of Zinc(II), Manganese(II), or Nickel(II) Atoms with 3‐(Carboxymethyl)‐2, 7‐dimethyl‐3H‐benzo[d]imidazole‐5‐carboxylic Acid
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<jats:title>Abstract</jats:title><jats:p>Four complexes with supramolecular architectures, namely, MZCA<jats:bold>·</jats:bold>3H<jats:sub>2</jats:sub>O (<jats:bold>1</jats:bold>), [Zn(H<jats:sub>2</jats:sub>O)<jats:sub>6</jats:sub>]<jats:sup>2+</jats:sup><jats:bold>·</jats:bold>[MZCA]<jats:sub>2</jats:sub><jats:bold>·</jats:bold>[H<jats:sub>2</jats:sub>O]<jats:sub>6</jats:sub> (<jats:bold>2</jats:bold>), [Mn(MZCA)<jats:sub>2</jats:sub>(H<jats:sub>2</jats:sub>O)<jats:sub>4</jats:sub>]<jats:bold>·</jats:bold>2H<jats:sub>2</jats:sub>O (<jats:bold>3</jats:bold>), and [Ni(MZCA)<jats:sub>2</jats:sub>(H<jats:sub>2</jats:sub>O)<jats:sub>4</jats:sub>]<jats:bold>·</jats:bold>2H<jats:sub>2</jats:sub>O (<jats:bold>4</jats:bold>) [MZCA = 3‐(carboxymethyl)‐2, 7‐dimethyl‐3H‐benzo[d]imidazole‐5‐carboxylic acid], were synthesized and characterized by elemental analysis, IR spectroscopy, and single‐crystal X‐ray diffraction. Complexes <jats:bold>1</jats:bold> and <jats:bold>2</jats:bold> display a remarkable 3D network with 1D hydrophilic channels. Complexes <jats:bold>3</jats:bold> and <jats:bold>4</jats:bold> are isostructural and exhibit a 3D structure encapsulating 1D 24‐membered ring microporous channels. The UV/Vis and fluorescent spectra were measured to characterize complexes <jats:bold>1</jats:bold>–<jats:bold>4</jats:bold>. The thermal stability of complexes <jats:bold>2</jats:bold>–<jats:bold>4</jats:bold> were also examined.</jats:p>