Supporting Information

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Mass spectrometry was performed using a ThermoQuest Finnigan TSQ 7000 (ESI-MS),. Finnigan MAT 95 (LIFDI) and JEOL AccuTOF GCX (LIFDI), respectively.

Supporting Information

Influence of the nacnac Ligand in Iron(I)-Mediated P4 Transformations Fabian Spitzer, Christian Graßl, Gbor Balzs, Eva M. Zolnhofer, Karsten Meyer, and Manfred Scheer* anie_201510716_sm_miscellaneous_information.pdf

Supporting Information Contents:

1.

Synthesis and Characterization........................................................................................................ 1

2.

Crystallographic Details .................................................................................................................. 8

3.

Magnetic Measurements in Solution (Evans Method) .................................................................. 11

4.

SQUID Magnetization Measurements and Mössbauer Spectra .................................................... 12

5.

1

6.

Computational Details ................................................................................................................... 22

H NMR and EPR Spectroscopy ................................................................................................... 15

1. Synthesis and Characterization

General Remarks:

1

All manipulations were performed with rigorous exclusion of oxygen and moisture using Schlenk-type glassware on a dual manifold Schlenk line with Argon inert gas or glove box filled with N 2 containing a high-capacity recirculator (