After 12 hours the reaction mixture produces a yellow-gold precipitate which was filtered. The filtered solution was left to stand in a capped 30 ml vial. After 3-4 days of standing yellow rod-shaped crystals suitable for X-ray diffraction appeared at the bottom of vial. Elemental analysis (% C H N) calculated (found) for C67H148Cl8Fe11N11O40Zn4: C 27.68 (27.43), H 5.13 (4.91), . Metal analysis by ICP-OES (%wt Fe, Zn) calculated (found): Fe 21.94 (21.52) Zn 9.34 .