Synthesis of a Large Organometallic Macrocycle Comprising Four Ga-Ga Bonds and Four Bridging Ferrocene Dicarboxylato Ligands. Organometallics, (19)6:1128--1131, 2000. [PUMA: bond bridging ferrocenedicarboxylate ferrocenedicarboxylate;gallium ferrocenedicarboxylate;oxidn gallium macrocycle macrocycle;crystal potential prepn structure structure;mol]