Two Three-Dimensional Metal−Organic Frameworks from Secondary Building Units of Zn<sub>8</sub>(OH)<sub>4</sub>(O<sub>2</sub>C−)<sub>12</sub> and Zn<sub>2</sub>((OH)(O<sub>2</sub>C−)<sub>3</sub>: [Zn<sub>2</sub>(OH)(btc)]<sub>2</sub>(4,4‘-bipy) and Zn<sub>2</sub>(OH)(btc)(pipe)Zhan Shi, Shouhua Feng, Guanghua Li et al.|Crystal Growth & Design|2003Cited by 91