Synthesis and Spectroscopic Properties of Cobalt(II), Copper(I), and Silver(I) Complexes and Crystal Structure of a Cobalt(II) Complex with a Bidentate Diisonitrile Containing Two Amino Nitrogens in the Bridging Group

Total Synthesis of the Bacterial Diisonitrile Chalkophore SF2768

“…The titration with linear diisonitrile acetate 4 revealed clear shifts of the C3′-proton adjacent to the isonitrile motif, as well as the diastereotopic C6-protons on the lysinol chain, with a maximal change at 2:1 ligand-to-copper stoichiometry (Figure ). Disappearance of the isonitrile 13 C signal was also observed, consistent with Cu-quadrupole coupling. , A characteristic IR shift caused by the inductive effect of the metal was observed for the isonitrile group from 2414 to 2184 cm –1 . Taken together, these results are consistent with direct Cu binding via the isonitrile motifs of diisonitrile acetate 4 , resulting in conformational changes throughout the rest of the lysinol backbone.…”

“…Disappearance of the isonitrile 13 C signal was also observed, consistent with Cu-quadrupole coupling. 25,33 A characteristic IR shift caused by the inductive effect of the metal 34 was observed for the isonitrile group from 2414 to 2184 cm −1 . 25 Taken together, these results are consistent with direct Cu binding via the isonitrile motifs of diisonitrile acetate 4, resulting in conformational changes throughout the rest of the lysinol backbone.…”

Synthesis and characterization of cobalt(iii) cyanide complexes: cobalt participation in the decomposition of radical anion of TCNQ

“…The infrared spectrum of 1 shows two n(CMN) stretches at 2144 and 2118 cm 21 , consistent with the presence of both the terminal and bridging cyanide groups. 41,[46][47][48][49] Complexes 1S and 1R show no significant difference in the infrared spectrum and they have similar absorption in the same region as complex 1.…”