Elusive Double-Eight-Ring Zeolitic Secondary Building Unit
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Updated: Mar 10, 2026

Synthesis of Zeolites Using the ADOR Assembly-Disassembly-Organization-Reassembly Route
Published on: April 3, 2016
Sandeep K Gupta1, Alok Ch Kalita1, Aijaz A Dar1
1Department of Chemistry, Indian Institute of Technology Bombay , Powai, Mumbai, Maharashtra-400 076, India.
Abstract:
The double-eight-ring (D8R), an elusive secondary building unit of zeolites, has been stabilized for the first time, both in solution and solid-state. The present study further establishes that any of the three double-ring building blocks of zeolites, viz. D4R, D6R and D8R ([ArPO3Zn(L)]n (n = 4, 6 or 8)), can be preferentially isolated (over the other two) through a careful choice of metal source, aryl phosphate and ancillary ligand, apart from maintaining a meticulous control on the reaction conditions.
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