ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Nickel complexes with thiourea. I

Tibor Šramko

Slovak Technical University, Bratislava

Abstract: From aq. and acetone media these new Ni complex compds. with CS(NH₂)₂ (tu) as ligand were prepd.: Nitu₆(NO₃)2, greenish monoclinic crystals, m. 168°, formed by dissolving 10 g. Ni(NO₃)₂.6H₂O and 15.71 g. thiourea (molar ratio Ni:tu = 1:6) in 100 ml. acetone; Nitu₆(ClO₄)₂, yellow-green crystal, m. 173°, formed by dissolving 10 g. Ni(ClO₄)₂.5H₂O and 4.9 g. thiourea (molar ratio Ni:tu = 1:2) in 10 ml. H₂O; Nitu₆Br₂, green-yellow powder, m. 180°, formed by dissolving 5 g. Ni(NO₃)₂.6H₂O and 7.4 g. LiBr.2H₂O in 50 ml. acetone and adding during const. mixing 7.86 g. thiourea and after 5 min. adding 3.96 g. more of thiourea (molar ratio Ni:tu:Br = 1:9:3.5); Nitu₆BrNO_3, yellow-green crystals, m. 171°, formed by dissolving 5 g. Ni(NO₃)₂.6H₂O and 2.12 g. LiBr.2H₂O in 100 ml. acetone and adding during const. mixing 7.86 g. thiourea (molar ratio Ni:tu:Br:NO3 = 1:6:1:2); Nitu₄BrNO₃, red-brown orthorombic crystals, m. 169°, formed by dissolving 2.91 g. Ni(NO₃)₂.6H₂O, 2.19 g. NiBr₂, and 6.09 g. thiourea in 100 ml. acetone (molar ratio Ni:tu:Br:NO₃ = 1:4:1:1); Nitu₅Br₂, yellow powder, m. 170.5°, formed by dissolving 5 g. NiBr₂ with const. mixing in 50 ml. acetone with 10.46 g. thiourea (molar ratio Ni:tu = 1:6) and mixed for 1 hr.; and Ni₂tu₇Br₄, light-brown powder, m. 183.5°, formed by dissolving 6.96 g. thiourea in 50 ml. acetone and, after adding 5 g. NiBr₂ (molar ratio Ni:tu = 1:4), mixed for 1 hr.

Full paper in Portable Document Format: 154a271.pdf (in Slovak)

Chemical Papers 15 (4) 271–277 (1961)