Synthesis, structure, optical and thermal analysis of the new compound of the new compound organo-metallic (C5H6N)2TeCl6

Polymeric polyiodo-chlorotellurates(iv): new supramolecular hybrids in halometalate chemistry

“…N/C placement is ambiguous and was chosen to provide the shortest N–H⋯Cl hydrogen bonds in each part (2.567 and 2.644 Å for 0.644 and 0.356, respectively), but these contacts should be considered very carefully. In comparison with previously reported (PyH) 2 [TeCl 6 ], 39,77,78 the chlorotellurate octahedra in 2 are much more distorted. The corresponding distances are 2.524–2.557 Å for a room-temperature structure reported in 2022 (ref.…”

“…N/C placement is ambiguous and was chosen to provide the shortest N-H⋯Cl hydrogen bonds in each part (2.567 and 2.644 Å for 0.644 and 0.356, respectively), but these contacts should be considered very carefully. In comparison with previously reported (PyH) 2 [TeCl 6 ], 39,77,78 The anionic part of 3 resembles that of 2 and 4; however, it has significantly distorted zigzag chains (Fig. 3) with one crystallographically independent distorted octahedron (Te-Cl = 2.453-2.703 Å).…”

“…The corresponding distances are 2.524–2.557 Å for a room-temperature structure reported in 2022 (ref. 78) vs. 2.460–2.617 Å in 2 , with the longest Te–Cl bond being for a chloride ligand involved in Cl⋯I halogen bonding (3.177 Å, Te–Cl⋯I and I–I⋯Cl angles are 165.57° and 172.17°, respectively). Similarly, in 4 , 4-methylpyridinium molecules are also disordered (occupancies 0.64/0.36, RIGU restrains were applied for both parts).…”

Hydrogen Bond-Driven Displacive Phase Transition and the Abrupt Optical/Magnetic Behavior in One-Dimensional Mn(II) Chloride Hybrid

“…The Raman shifts below and above 300 cm –1 are ascribed to the vibrations of inorganic and organic species, respectively. According to previous assignment of Raman modes of organic–inorganic hybrid metal halides, the Raman band at 137 cm –1 ( v 1 ) is deemed to the Cl–Mn–Cl deformation, and the peaks of 163 and 226 cm –1 ( v 2 and v 3 ) belong to the stretching of Mn–Cl. − When temperature rises from 80 to 300 K, these bands show a continuous but slight red-shift, which is owed to the weakening of these vibrational modes ( v 1–3 ) caused by the lengthened Mn–Cl bonds. The Raman peaks at 600–3000 cm –1 are attributed to the vibration of C 5 H 6 N + , and the assignments are listed in Table S8 .…”

Pressure‐Induced Dual‐Emission of Mn‐Based Metal Halides (C5H6N)2MnBr4

“…Meanwhile, the Raman mode of (C 5 H 6 N) + organic cation displays a blue shift, and it is mostly suppressed, indicating the enhancement of the interaction between the (C 5 H 6 N) + organic cation and the MnBr 4 2− inorganic framework (Figure S11, Supporting Information). [ 29 ] The gradual decrease in XRD and Raman peaks with the increase of pressure suggests that (C 5 H 6 N) 2 MnBr 4 tends to become amorphous under high pressure. Moreover, when the pressure was completely released, not all Bragg diffraction peaks and Raman modes were fully recovered.…”