Sulfurdiimine

MLTC bands, S, 575 NMR.5,574 Raman, 5, 575 stereochemistry, 5,538-572 stibine ligands, S, 584 sulfides, S, 584 sulfurdiimine reactivity, 2,194 sulfur dioxide, 5,584 sulfur ligands, 5,584 synthesis, 5,536-538... 

Sulfurdiimine, Triazenido, Azabutadiene and Triatomic Hetero Anion Ligands... 

Sulfurdiimines RN=S=NR and thionitrites RN=S=0 (R = alkyl, aryl) have been relatively little investigated as ligands in metal complexes. This lack of attention has been little deserved as both types of ligands have interesting ambident coordination properties, since they may bind via N, S, O, the 7t-N=S or jr-S=0 bond for example. They may be compared with allenes and naturally also with the isostructural and the isoelectronic sulfur dioxide 0=S—O.13 We will first discuss some relevant data concerning RNSNR and RNSO and subsequently the properties of the metal complexes. 

Finally monodentate N-coordination has also been observed for metal atoms in a zerovalent oxidation state. Examples are M(CO)5(RNSNR) (M = Cr, Mo, W R = Me, Et, Pr ) with the metal atom bonded to the N atom at the cis side of the sulfurdiimine ligand in the cis, trans configuration.1 18... 

The solid state features of the platinum complexes are also retained in solution, as shown by 3IP and l95Pt NMR measurements of lsN-enriched samples. These types of measurements also made it possible to determine that the rather unstable sulfurdiimine analogue Pt(PPh3)2(RNSNR) has a similar structure with the t-N=S bond being f/2-bonded to Pt.20... 

Sulfurdiimine, Azabutadiene and Triatomic Hetero Anion Ligands (vi) Metals in Group VIII Ni, Pd, Pt... 

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