Two manganese–amine complexes incorporating thioantimonates and exhibiting diversiform roles of amine ligands

Abstract

Two manganese–amine complexes incorporating thioantimonates with diversiform structure-directing actions of the amine ligands have been synthesized and characterized.

[Mn(terpy)Sb2S4]n, a 1D Network of MnSb4S5 Rings Exhibiting a Pronounced Magnetocaloric Effect and Luminescence

“…[20] Antiferromagnetic ordering was observed at T N = 40.5 K for Mn 2 Sb 4 S 8 (N 2 H 4 ) 2 exhibiting a 3D structure. But moderate magnetic frustration was present as indicated by the value for the Weiss constant of -77.3 K. [45] Weak respectively moderate antiferromagnetic exchange interactions were observed for ( O crystallizing in a 1D structure, with θ = -1.5 and -13.9 K. [17] The effective magnetic moment for Mn 2+ was close to the spin-only value and strong deviation with 4.24 μ B for Mn 2 Sb 4 S 8 (N 2 H 4 ) 2 was not further discussed. The magnetocaloric effect (MCE) is an intrinsic property of compounds containing paramagnetic centers, and well documented for e.g.…”

“…Many of these thioantimonates have been prepared applying elemental transition metals (TM) or TM salts, Sb, and S, which are reacted with amines in aqueous solutions. [7][8][9][10][11][12][13][14][15][16][17] The neighbored ligands indicate π•••π stacking. Magnetic investigations show paramagnetic behavior (μ eff = 5.92 μ B /Mn 2+ at room temperature).…”

“…In comparison to the properties of divalent late transition metal cations, the Mn 2+ ion behaves quite different, as it shows a similar affinity to N donor atoms and S 2anions, and thus is readily integrated into a variety of thioantimonate networks. [3,10,12,17,18,[20][21][22][23][24][25][26][27]28] Recently, we reported the synthesis of new thioantimonates using TM 2+ complexes and Schlippe's salt, Na 3 SbS 4 •9H 2 O, as a water-soluble precursor. [29] This reaction system is characterized by a short reaction time for product formation and a remarkable robustness against changes of the reaction parameters.…”

Solvothermal syntheses, crystal structures, and properties of new lanthanide compounds based on tetraselenidoantimonate and tetraethylenepentamine mixed ligands

“…complexes ions [15][16][17][18][19][20][21][22][23]. Only a few ternary chalcogenidoantimonates integrated with TM were prepared in en and dien, and the examples include Cr(en) 2 SbS 3 [24], [Mn 2 (en) 2 (Sb 2 S 5 )] [25], [Mn 2 (dien)(Sb 2 S 5 )] [26], [Mn 4 (-en) 9 (SbSe 4 ) 4 ] 4- [27], [Mn 2 (SbSe 4 ) 2 (en) 4 (H 2 O)] 2- [28], and (dienH 3 )[(dienH)MnSb 8 S 15 ] H 2 O [29]. On the other hand, the TM n?…”

A Strategy for the Preparation of Thioantimonates Based on the Concept of Weak Acids and Corresponding Strong Bases

“…On the basis of these synthetic methods, a large variety of thioantimonates with variable and fascinating structures were prepared. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] During our systematic investigations of TM-Sb-S systems using different amines, transition metals (or transition metal complexes), and antimony sources, we were able to prepare a large number of compounds containing, for example, Cr, [21][22][23] Mn, [24][25][26][27][28][29][30][31][32] Fe, [33][34][35] Co, [36][37][38] Ni, [22,[39][40][41][42][43][44][45] Cu, [46,47] Zn, [48] or Ag [49] .…”