The present volume "Organoiron Compounds" B 13 systematically covers the literature through the end of 1986, and includes additional references up to 1988. The volume continues Series B (volumes B 1 to B 12 already published) on the mononuclear organoiron compounds, whereas Series A (volumes A 1 to A 8 already published) is devoted to the ferrocenes and Series C (volumes C 1 to C 5 and C 7 already published) treats organoiron compounds with two or more Fe atoms in the molecule. The volume B 13 continues the description of C5H5Fe(CO)2R compounds, which will be completed shortly in volume B 14. It deals with compounds in which the C5H5Fe(CO)2 group is bonded to alkyl groups substituted by heterocycles, to a C=O, C=N, or C=S unit, and to alkenyl, alkynyl or carbocycles. An Index covering the volumes B 13 and B 14 will be included in Part B 14.