Solvothermal syntheses of three new one-dimensional ternary selenidostannates: [DBNH][M1/2Sn1/2Se2] (M=Mn, Zn, Hg)

Syntheses, Crystal Structures, and Optical and Photocatalytic Properties of Four Small-Amine-Molecule-Directed M–Sn–Q (M = Zn, Ag; Q = S, Se) Compounds

“…Also noteworthy is that the Sn(2)–Se distances are slightly longer than those in [M′Se 4 ] tetrahedra. These bond lengths and observed bond angles are normal and comparable with those in compounds, such as [AEPH 2 ]­Zn 2 Sn 2 Se 7 , [DBNH]­[Zn 0.5 Sn 0.5 Se 2 ], [K 10 (H 2 O) 16 ­(MeOH) 0.5 ]­[Zn 4 (μ 4 -Se)­(SnSe 4 ) 4 ], and [(TEPA)­Mn] 4 ­[Ga 4 Zn 2 Sn 4 Se 20 ] (TEPA = tetraethylenepentamine) …”

“…Although the anionic layer of compound 1 has the same M/ Sn ratio as those of compounds Cs 2 MSn 3 Se 8 (M = Zn, Cd, Hg), 63 Hitherto, although several organically templated M−Sn−Q (M = Mn, Zn, Cd, Hg, Ga, In; Q = S, Se) compounds have been synthesized under mild solvothermal conditions, 23,24,[30][31][32][33][34][35][36][37][38][39][40][41][42][43][44]46 2D M−Sn−Q compounds based on T2 clusters as SBUs have rarely been isolated. Compound 1 represents a rare example of organically templated 2D M−Sn− Q compounds characteristic of T2 cluster as SBUs.…”

“…Hitherto, although several organically templated M–Sn–Q (M = Mn, Zn, Cd, Hg, Ga, In; Q = S, Se) compounds have been synthesized under mild solvothermal conditions, ,,− , 2D M–Sn–Q compounds based on T2 clusters as SBUs have rarely been isolated. Compound 1 represents a rare example of organically templated 2D M–Sn–Q compounds characteristic of T2 cluster as SBUs.…”

“…Mild solvothermal techniques have proven to be very effective routes for the preparation of chalcogenidometalates, in which the amines molecules were often applied as reactive medium and/or SAAs. − In the preparation of M–Sn–Q (M = transition metal ions), the polyamine (e.g., ethylendiamine (en) and diethylenetriamine (dien)) or large organic amine molecules (e.g., N -(2-aminoethyl)­piperazine (AEP) and 1,5-diazabicyclo[4.3.0]­non-5-ene (DBN)) have been widely used as the solvents and/or SAAs. ,− By contrast, the smaller organic amine (e.g., [CH 3 NH 3 ] + and [(Me) 2 NH 2 ] + ) or NH 4 + -directed M–Sn–Q compounds are rarely explored. The limited examples include [CH 3 NH 3 ] 2 x ­Mn x Sn 3– x S 6 ­·0.5H 2 O ( x = 0.5–1.1), [CH 3 NH 3 ] 2 ­Ag 4 Sn IV 2 Sn II S 8 , [NH 4 ] 2 ­Ag 6 Sn 3 S 10 , [NH 4 ] 4­ Ag 12 Sn 7 Se 22 , and [(Me) 2 NH 2 ] 0.75 ­Ag 1.25 SnSe 3 .…”

Surfactant-Thermal Syntheses, Structures, and Magnetic Properties of Mn–Ge–Sulfides/Selenides

“…The bond lengths of Ge–Se and Mn–Se are in the range of 2.348–2.363 Å, and 2.550–2.571 Å, respectively . Although similar anionic chains [MM′ Q ] 6 2– (M = Mn, Hg, Zn; M′ = Ge, Sn; Q = S, Se, Te) have been reported in several compounds such as A 2 [MSnQ 4 ] (A = K, Et 4 N, Me 4 N; M = Mn, Hg; Q = Se, Te), [1,4-dabH] 2 ­[MnSnS 4 ] (1,4-dabH = 1,4-diaminobutane), [AEP][PPZH] 3 ­[Zn 2 Ge 2 Se 8 ] (AEP = N -(2-aminoethyl)­piperazine, PPZ = piperazine), and [DBNH]­[M 1/2 Sn 1/2 Se 2 ] (M = Mn, Hg, Zn), compound 4 is the first example of anionic chain structure for thiogermanate integrated with Mn 2+ ions.…”