Organometallic Group‐13 Metal Complexes of d‐Block Elements, XIV . Intramolecularly Base‐adduct‐stabilized Transition‐metal‐substituted Indanes: Synthesis and Spectroscopic Characterization, Structure of (η 5 ‐C 5 H 5 )(CO)NiInBr 2 (NC 7 H 13 )

The reaction of InBr/InBr 3 or InBr/BrIn[(CH 2 ) 3 NMe 2 ] 2 with the transition metal dimers [L(CO) n M] 2 {L = CO, Cp, C 5 H 4 [(CH 2 ) 2 NMe 2 ]; M = Fe, Co, Ni; n = 1–3} in THF or dioxane gives in almost quantitative yield the transition metal indium complexes L(CO) n MInBr 2 (Do) (Do = THF, NC 7 H 13 ) and L(CO) n MIn[(CH 2 ) 3 NMe 2 ](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 (η 5 ‐C 5 H 5 )(CO)‐Ni–InBr 2 (NC 7 H 13 ) ( 1a ) revealed a short Ni–In bond of 246.3(1) pm.