219964-86-0Relevant academic research and scientific papers
Synthesis and complexation of nickel(II) and copper(II) by pendant-arm alcohol derivatives of [9]aneNS2 (7-aza-1,4-dithiacyclononane)
Blake, Alexander J.,Danks, Jonathan P.,Fallis, Ian A.,Harrison, Andrew,Li, Wan-Sheung,Parsons, Simon,Ross, Steven A.,Whittaker, Gavin,Schroeder, Martin
, p. 3969 - 3976 (1998)
A simplified procedure for the preparation of [9]aneNS2 (7-aza-1,4-dithiacyclononane) is described. The structure of the complex [Cu([9]aneNS2)2]2+ confirms that the CU(II) centre is in a distorted octahedral environment, Cu-S(1) 2.5469(14), Cu-S(4) 2.5386(13), Cu-N(7) 2.016(4) A. Reaction of [9]aneNS2 with isobutylene oxide or 2,2-diphenyl-oxirane gives the alcohol derivatives, HL1 and HL2, respectively. The 1:1 metal:ligand complex [Cu2(L1)2]2+ was found to be binuclear with the alcohol functions deprotonated to form alkoxide bridges between two CU(II) centres, Cu-N(1) 2.042(4), Cu-S(4) 2.452(2), Cu-S(7) 2.430(2), Cu-O(14) 1.927(4), Cu-O(14′) 1.922(4), Cu-Cu′ 3.0063(9) A, Cu-O-Cu′ 102.7(2)°. Magnetochemical data for this complex confirm antiferromagnetic coupling between the two Cu(II) centres with 2J = -417 ± 2 cm-1. With Ni(II) the complex [Ni(HL1)(CH3CO2)]+ can be isolated, the structure of which shows it to be a monomer with the ligand HL1 acting as a tetradentate ligand to the metal centre, Ni-N(1) 2.064(3), Ni-S(4) 2.3658(12), Ni-S(7) 2.3875(13), Ni-O(14) 2.061(3) A. A chelating acetate ligand completes the distorted octahedral geometry, Ni-O(16) 2.098(3), Ni-O(17) 2.102(3) A.
