Bis(dimethylammonium) tetrabromidomanganate(II)

Morawitz, Thorsten; Kern, Beatrice; Lerner, Hans‐Wolfram; Bolte, Michael

doi:10.1107/s160053680701882x

Cited by 3 publications

(2 citation statements)

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“…The average Mn-Br bond length is 2.4469 Å and the magnitude of the Br-Mn-Br angles falls in the range of 107.08(4)-111.86(6)° (Table 3). These values are consistent with analogous ones in compounds containing similar structural units [34][35][36].…”

Section: Resultssupporting

confidence: 89%

Bis(tetraethylammonium) tetrabromocobaltate(II) and bis(tetrabutylammonium) tetrabromomanganate(II): structure and magnetic properties

et al. 2010

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The crystal structures of tetrabromocobaltate(II) and tetrabromomanganate(II) salts of general formula [(C 2 H 5 ) 4 N] 2 [CoBr 4 ] (1) and [(C 4 H 9 ) 4 N] 2 [MnBr 4 ] (2) were determined. The manganese and cobalt cations are four-coordinated by bromide anions and they adopt a slightly distorted tetrahedral coordination. In the structure of both compounds there are neither hydrogen bonds nor any unusual short-range intermolecular interactions. Magnetic measurements of the powdered samples gave negative values of the Weiss constants equal to -4.9 and -1.1 K for (1) and (2), respectively, which suggest antiferromagnetic interactions to be transferred within the crystal lattice.

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Section: Resultssupporting

confidence: 89%

Bis(tetraethylammonium) tetrabromocobaltate(II) and bis(tetrabutylammonium) tetrabromomanganate(II): structure and magnetic properties

et al. 2010

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“…The Br-Mn-Br angles with 103.3 to 116.1°are in good agreement with a distorted tetrahedron and are similarly observed in [(CH 3 ) 2 NH 2 ] 2 [MnBr 4 ] as a reference (Mn-Br: 249-253 pm; Br-Mn-Br: 105.1-111.9°). 17 An illustration of (2 × 2) unit cells of (2) shows double layers of the cationic and the anionic building unit along the crystallographic b-axis, alternating with layers of (MnBr 4 ) tetrahedra (ESI Fig. S3 †).…”

Section: Local Coordination and Structurementioning

confidence: 99%

MnBr₂/18-crown-6 coordination complexes showing high room temperature luminescence and quantum yield

2016

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The reaction of manganese(ii) bromide and the crown ether 18-crown-6 in the ionic liquid [(n-Bu)3MeN][N(Tf)2] under mild conditions (80-130 °C) resulted in the formation of three different coordination compounds: MnBr2(18-crown-6) (), Mn3Br6(18-crown-6)2 () and Mn3Br6(18-crown-6) (). In general, the local coordination and the crystal structure of all compounds are driven by the mismatch between the small radius of the Mn(2+) cation (83 pm) and the ring opening of 18-crown-6 as a chelating ligand (about 300 pm). This improper situation leads to different types of coordination and bonding. MnBr2(18-crown-6) represents a molecular compound with Mn(2+) coordinated by two bromine atoms and only five oxygen atoms of 18-crown-6. Mn3Br6(18-crown-6)2 falls into a [MnBr(18-crown-6)](+) cation - with Mn(2+) coordinated by six oxygen atoms and Br - and a [MnBr(18-crown-6)MnBr4](-) anion. In this anion, Mn(2+) is coordinated by five oxygen atoms of the crown ether as well as by two bromine atoms, one of them bridging to an isolated (MnBr4) tetrahedron. Mn3Br6(18-crown-6), finally, forms an infinite, non-charged [Mn2(18-crown-6)(MnBr6)] chain. Herein, 18-crown-6 is exocyclically coordinated by two Mn(2+) cations. All compounds show intense luminescence in the yellow to red spectral range and exhibit remarkable quantum yields of 70% (Mn3Br6(18-crown-6)) and 98% (Mn3Br6(18-crown-6)2). The excellent quantum yield of Mn3Br6(18-crown-6)2 and its differentiation from MnBr2(18-crown-6) and Mn3Br6(18-crown-6) can be directly correlated to the local coordination.

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Reversible luminescent humidity chromism of organic–inorganic hybrid PEA₂MnBr₄ single crystals

Gao

Leng

et al. 2020

Dalton Trans.

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Bis(dimethylammonium) tetrabromidomanganate(II)

Abstract: The title compound, (C2H10N)2[MnBr4], consists of discrete dimethylammonium cations and tetrabromidomanganate(II) anions which are held together in the crystal structure by N—H...Br hydrogen bonds.

Cited by 3 publications

References 7 publications

Bis(tetraethylammonium) tetrabromocobaltate(II) and bis(tetrabutylammonium) tetrabromomanganate(II): structure and magnetic properties

Bis(tetraethylammonium) tetrabromocobaltate(II) and bis(tetrabutylammonium) tetrabromomanganate(II): structure and magnetic properties

MnBr₂/18-crown-6 coordination complexes showing high room temperature luminescence and quantum yield

Reversible luminescent humidity chromism of organic–inorganic hybrid PEA₂MnBr₄ single crystals

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Bis(dimethylammonium) tetrabromidomanganate(II)

Abstract: The title compound, (C2H10N)2[MnBr4], consists of discrete dimethylammonium cations and tetrabromidomanganate(II) anions which are held together in the crystal structure by N—H...Br hydrogen bonds.

Cited by 3 publications

References 7 publications

Bis(tetraethylammonium) tetrabromocobaltate(II) and bis(tetrabutylammonium) tetrabromomanganate(II): structure and magnetic properties

Bis(tetraethylammonium) tetrabromocobaltate(II) and bis(tetrabutylammonium) tetrabromomanganate(II): structure and magnetic properties

MnBr2/18-crown-6 coordination complexes showing high room temperature luminescence and quantum yield

Reversible luminescent humidity chromism of organic–inorganic hybrid PEA2MnBr4 single crystals

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MnBr₂/18-crown-6 coordination complexes showing high room temperature luminescence and quantum yield

Reversible luminescent humidity chromism of organic–inorganic hybrid PEA₂MnBr₄ single crystals