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Syntheses, crystal structures and properties of tetra-kis-(3-methyl-pyridine-κN)bis-(iso-thio-cyanato-κN)manganese(II) and tetra-kis-(3-methyl-pyridine-κN)bis-(iso-thio-cyanato-κN)iron(II).

ABSTRACT: The reaction of Mn(NCS)2 or Fe(NCS)2 with 3-methyl-pyridine (C6H7N) leads to the formation of two isostructural compounds with compositions [Mn(NCS)2(C6H7N)4] (1) and [Fe(NCS)2(C6H7N)4] (2). IR spectroscopic investigations indicate that only terminally coordinated thio-cyanate anions are present. This is confirmed by single-crystal structure analysis, which shows that their crystal structures consist of discrete centrosymmetric complexes, in which the metal cations are octa-hedrally coordinated by two N-bonded thio-cyanate anions and four 3-methyl-pyridine ligands. X-ray powder diffraction (XRPD) proves that pure samples have been obtained. Thermogravimetric measurements show that decomposition starts at about 90°C and that the two coligands are removed in one step for 1 whereas for 2 no clearly resolved steps are visible. XRPD measurements of the residue obtained after the first mass loss of 1 show that a new and unknown crystalline compound has been formed.

SUBMITTER: Ceglarska M 

PROVIDER: S-EPMC9260356 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature

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Syntheses, crystal structures and properties of tetra-kis-(3-methyl-pyridine-κ<i>N</i>)bis-(iso-thio-cyanato-κ<i>N</i>)manganese(II) and tetra-kis-(3-methyl-pyridine-κ<i>N</i>)bis-(iso-thio-cyanato-κ<i>N</i>)iron(II).

Ceglarska Magdalena M   Krebs Christoph C   Näther Christian C  

Acta crystallographica. Section E, Crystallographic communications 20220630 Pt 7

The reaction of Mn(NCS)<sub>2</sub> or Fe(NCS)<sub>2</sub> with 3-methyl-pyridine (C<sub>6</sub>H<sub>7</sub>N) leads to the formation of two isostructural compounds with compositions [Mn(NCS)<sub>2</sub>(C<sub>6</sub>H<sub>7</sub>N)<sub>4</sub>] (<b>1</b>) and [Fe(NCS)<sub>2</sub>(C<sub>6</sub>H<sub>7</sub>N)<sub>4</sub>] (<b>2</b>). IR spectroscopic investigations indicate that only terminally coordinated thio-cyanate anions are present. This is confirmed by single-crystal structure analysis,  ...[more]

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