Darstellung und Eigenschaften der Ni^II‐Komplexe mit S‐Methylthiosemicarbazid

Abstract

Die Komplexe NiL2X2 (LS‐methylthiosemicarbazid; XCl, Br, I, NCS, NO3) wurden durch Umsetzung von L·HI mit Nickelacetat und in Gegenwart der entsprechen den Ionen dargestellt. [NiL2]I2 gab mit Pyridin den [NiL2Py2]I2‐Komplex. Die [NiL2]X2 (XCl, Br, I)‐Komplexe stellen rotbraune, diamagnetische Substanzen dar, während die Komplexe NiL2X2 (XNCS, NO3) und [NiL2Py2]I2 blau bis violett und paramagnetisch sind. Außer magnetischen Daten, werden Strukturfragen anhand der IR und Elektronenspektren diskutiert.

Structure of a nickel complex with p-nitrophenylazothiomethyl-N-phenylcarboximide anion radical

“…It is known that the Ni n complexes can form two types of coordination geometry with the L ligands: octahedral high-spin neutral or cationic complexes, such as [NiL2(NO2)2] (Bourosh, Revenko, Simonov, Gerbeleu, Dvorkin & Malinowski, 1987) and [NiL2im2]I2 (Revenko, Bourosh, Gerbeleu, Simonov, Virtosu & Malinowskii, 1989) and square-planar low-spin cationic complexes, such as [NiL2]Z2 (Leovac, Babin, Canic & Gerbeleu, 1980) where R1. = R2 = R3 = R4 = H; X = C1, Br, I.…”

Transition metal complexes with thiosemicarbazide-based ligands. XV. A square-pyramidal NiIIcomplex with an asymmetric coordination of 2,6-diacetylpyridine bis(S-methylisothiosemicarbazone)

“…The dark brown diamagnetic monocrystals of the title complex result from a template synthesis, i.e. the reaction of equimolar amounts of warm MeOH solutions (re¯ux, 40 min) of NiL H 2 I 2 (L H = 3-methylisothiosemicarbazide; Leovac et al, 1980)…”

Spontaneous Resolution of a Triple‐Stranded Dinickel(II) Helicate Generated via Intermolecular Transamination Reaction ofS‐Methylisothiocarbohydrazide in the Presence of Ni2+

“…[20] Compound with the same composition was already reported in the literature. [28] IR spectra were recorded on a Bruker FTIR VERTEX70 instrument in the region 4000-400 nm. Circular dichroism spectra were recorded in thermostatted (Ϯ0.5°C) quartz cuvettes (1 cm path length) on a CD6 circular dichrograph (I.S.A.…”