Stefan Suckert, H. Terraschke, H. Reinsch
May 1, 2017
Citations
0
Influential Citations
17
Citations
Journal
Inorganica Chimica Acta
Abstract
Abstract Reaction of Mn(NCS) 2 and Cd(NCS) 2 with 4-(Boc-amino)pyridine leads to the formation of compounds of composition M(NCS) 2 (4-(Boc-amino)pyridine) 4 (M = Mn, 1-Mn ; Cd, 1-Cd ) and (M(NCS) 2 (4-(Boc-amino)pyridine) 2 (M = Mn, 2-Mn ; Cd, 2-Cd ). 1-Cd and 1-Mn , respectively 2-Cd and 2-Mn are isotypic and their structures were determined by X-ray single crystal or powder diffraction. 1-Mn and 1-Cd consist of discrete complexes, whereas in 2-Mn and 2-Cd the cations are linked into chains by μ-1,3-bridging anionic ligands. On heating 1-Cd and 1-Mn , mass steps are observed that indicate formation of compounds of composition M(NCS) 2 (4-(Boc-amino)pyridine) 2 , but ex-situ XRPD investigations prove that amorphous intermediates are obtained. In contrast, temperature dependent XRPD measurements for 1-Cd indicate the formation of an unknown crystalline phase. Magnetic measurements on 2-Mn show dominating antiferromagnetic interactions along the chain and at T N = 22.0 K antiferromagnetic ordering is observed. 1-Cd and 2-Cd show bluish ligand-based luminescence with emission maxima at, respectively 22,301 cm −1 and 20,678 cm −1 , while 1-Mn and 2-Mn present metal-based luminescence in the yellow spectral range with emission maxima at 18,382 cm −1 .