S1 C-H Bond Chlorination Using Nickel(II) Complexes of Tetradentate Amido-Quinoline Ligands Sanjay Adhikari, a Aniruddha Sarkar b and Basab Bijayi Dhar a* a Department of Chemistry Shiv Nadar University Uttar Pradesh 201314 India b Department of Chemistry indian-Institute of Science, Education and Research Kolkata Mohanpur 741246, India Email: basab.dhar@snu.edu.in, basabbijayi@gmail.com Supplementary Information Table of Contents Physical method and materials Pages S2-S4 Synthesis and characterization data of Ligands Pages S4-S7 Synthesis and characterization data of Ni-complexes Pages S7-S10 Table S1 Crystal data and structure refinement parameters Page S10 Table S2 Selected bond lengths (Å) and bond angles (°) of complexes Page S11 Table S3 Optimization of C-H chlorination a using 1 Page S11 GC/GC-MS-trace for oxidation reaction Pages S12-S22 Spectroscopic characterization of Ni(III) intermediates Pages S22-S24 Plots of initial rate against substrate, catalyst and NaOCl concentration Page S24-S26 Table S2 TOF of 1 in catalytic chlorination of alkanes with NaOCl Page S27 Table S3 Comparison of Catalytic Activity of Various Catalysts for C-H chlorination of cyclohexane with NaOCl. Page S27 Determination of the Kinetic Deuterium Isotope Effect (KIE) Page S27-S28 References Page S28 Electronic Supplementary Material (ESI) for Chemical Communications. This journal is © The Royal Society of Chemistry 2022