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Procedures for the synthesis of 2-(t-BuNCH)C6H4Te(S2CNEt2) (1a), 2-(2',6'-i-Pr2C6H3)C6H4Te(S2CNEt2) (1b), [2-(t-BuNCH)C6H4]2Te (2a), 2-(t-BuNCH)C6H4TeCl (3a), and 2-(t-BuNCH)C6H4TeCl3 (4a) were developed. Compounds 1a - 4a possess 2-iminomethinylphenyl groups that provide intramolecular N-donation to… Click to show full abstract
Procedures for the synthesis of 2-(t-BuNCH)C6H4Te(S2CNEt2) (1a), 2-(2',6'-i-Pr2C6H3)C6H4Te(S2CNEt2) (1b), [2-(t-BuNCH)C6H4]2Te (2a), 2-(t-BuNCH)C6H4TeCl (3a), and 2-(t-BuNCH)C6H4TeCl3 (4a) were developed. Compounds 1a - 4a possess 2-iminomethinylphenyl groups that provide intramolecular N-donation to the Te atoms, which was investigated by multinuclear NMR spectroscopy and X-ray crystallography. The Te-N bond distances increase in the order 3a (2.203(2) A) < 4a (2.286(1) A) < 1b (2.337(2) A) < 4a (2.408(2) A) < 2a (2.688(2) A). The nature of these bonds spanning a wide range from weak to strongly dative was computationally analyzed for 1a - 4a by means of DFT calculations using real-space bonding indicators derived from the Atoms-In-Molecules (AIM), Electron Localizability Indicator (ELI-D) and Non-Covalent Interactions (NCI) indicator toolkits.
Journal Title: European Journal of Inorganic Chemistry
Year Published: 2017
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