trans-{1,8-Bis[(R)-α-methylbenzyl]-1,3,6,8,10,13-hexaazacyclotetradecane}dithiocyanatonickel(II)

Abstract

The title compound, [Ni(NCS)2(C24H38N6)], is a thio­cyanate-coordinated aza­macrocyclic nickel(II) complex. There are two independent mol­ecules in the asymmetric unit and their bond lengths and angles are similar. Both Ni atoms have a tetra­gonally distorted octa­hedral geometry, in which the NiII ion is coordinated by the four secondary N atoms of the aza­macrocyclic ligand and by two N atoms of the thio­cyanate ions. The average equatorial Ni—N bond lengths are shorter than the average axial Ni—N bond lengths [2.071 (1) and 2.115 (2) Å, respectively]. N—H⋯S hydrogen-bonding inter­actions between a secondary amine N atom and the adjacent thio­cyanate ion leads to a polymeric chain along [100].

Synthesis, Crystal Structure, and Spectroscopic Properties of Cu(II) Complex with 14-Membered Hexaazamacrocyclic Ligands

“…Typical examples of primary amines side chain, the ''pendant arm'', that have been used so far include propylamine [22,23], ethanolamine [24,25], 1,4-phenylenediamine [26], hydrazine [27], 2-thiophenemethylamine [28], nicotinamide [5], 4-aminobutyric acid [29,30], ethylamine [31], (R)-(? )-1-(1-naphthyl)ethylamine [32], ethylenediamine [33], 1-(3-aminopropyl)-imidazole [34], benzylamine [1,35], and (R/S)-a-methylbenzylamine [36][37][38][39].…”