Organometallic Group‐13 Metal Complexes of d‐Block Elements, XIV. Intramolecularly Base‐adduct‐stabilized Transition‐metal‐substituted Indanes: Synthesis and Spectroscopic Characterization, Structure of (η5‐C5H5)(CO)NiInBr2(NC7H13)

The reaction of InBr/InBr3 or InBr/BrIn[(CH2)3NMe2]2 with the transition metal dimers [L(CO)nM]2 {L = CO, Cp, C5H4[(CH2)2NMe2]; M = Fe, Co, Ni; n = 1–3} in THF or dioxane gives in almost quantitative yield the transition metal indium complexes L(CO)nMInBr2(Do) (Do = THF, NC7H13) and L(CO)nMIn[(CH2)3NMe2](Br) respectively. The new compounds were characterized by elemental analysis, infrared v(CO) spectroscopy, NMR, and mass spectrometry. An X‐ray single crystal structure determination of (η5‐C5H5)(CO)‐Ni–InBr2(NC7H13) (1a) revealed a short Ni–In bond of 246.3(1) pm.