hyperplastic fundic gland polyp of the stomach a case of a solitary pedunculated gastric polyp occurring in the fundic mucosa of a 47yearold woman is reported because of its unique morphology the polyp showed a peculiar lobulated configuration supported by smooth muscle bundles and its epithelial component was composed mainly of a proliferation of relatively normal but disorganized fundic glands containing variable numbers of mucous parietal argyrophile and chief cells although these histologic features may suggest a hamartomalike quality the lesion probably represents a peculiar form of localized hyperplastic process of the gastric mucosa exhibiting fundic glandular cell differentiation nitrogenase model complexes cpfemusr12mueta2r2nnhfecp r1 me et r2 me ph cp eta5c5me5 synthesis structure and catalytic nn bond cleavage of hydrazines on diiron centers the reactions of cpfemusr13fecp cp eta5c5me5 r1 et me with 15 equiv r2nhnh2 r2 ph me give the mueta2diazene diiron thiolatebridged complexes cpfemusr12mueta2r2n nhfecp along with the formation of phnh2 and nh3 these mueta2diazene diiron thiolatebridged complexes exhibit excellent catalytic nn bond cleavage of hydrazines under ambient conditions