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Crystal Structure of Some Charge-Control Agents: 3,5-di-tert-butyl-2-hydroxybenzoic Acid and its Zinc Complexes

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The title compounds are charge-control agents used in electrophotography. In 3,5-Di-tert-butyl-2-hydroxybenzoic acid (TBS), there are two independent molecules A and B in the asymmetric unit. The molecules form centrosymmetric dimers A-A and B-B via pair of O−H…O hydrogen bonds between the two carboxyl groups. On the other hand, the zinc complex of TBS (Zn(TBS)2) is found to include solvent molecules when recrystallized from ethanol and acetonitrile: (Zn(TBS)2) (ethanol)2 and (Zn(TBS)2) (acetnitrile)2. The former complex has C 2 symmetry, and exhibits a deformed octahedral coordination. Two O atoms of the ethanol molecules are coordinated in a cis fashion to the Zn atom. On the other hand, the latter forms a trinuclear complex: one central six-coordinate Zn complex and two four-coordinate Zn ones. Each O-ligand of TBS is coordinated to a different Zn atom.

Document Type: Research Article

Publication date: 2004-01-01

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  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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