TY - JOUR

T1 - Sr(ReO4)Br⋅2H2O and Ba(ReO4)I⋅2H2O: New Representatives of the Ca(ReO4)Cl⋅2H2O Type Structure

AU - Charkin, DO

AU - Khasanov, KA

AU - Kireev, VE

AU - Grishaev, VY

AU - Eremina, TA

AU - Siidra, OI

AU - Aksenov, SM

N1 - Times Cited in Web of Science Core Collection: 0 Total Times Cited: 0 Cited Reference Count: 45

PY - 2026/6/1

Y1 - 2026/6/1

N2 - Crystals of two new alkaline-earth perrhenate halides, Sr(ReO4)Br & sdot;2H2O (1) and Ba(ReO4)I & sdot;2H2O (2) were obtained upon evaporation of aqueous solutions at 95 - 100 degrees C. Both compounds are isostructural to the previously reported Ca(ReO4)Cl & sdot;2H2O and crystallize in orthorhombic symmetry with the space group Cmcm (a = 7.3906(5) & Aring;, b = 14.241(1) & Aring;, c = 7.1032(5) & Aring; for 1and a = 7.8624(4) & Aring;, b = 14.0202(5) & Aring;, c = 7.7190(3) & Aring; for 2). Both structures can be regarded as pseudo-layered 3D frameworks comprised of AO8X capped square antiprisms (A = Sr, Ba; X = Br, I) and ReO4 tetrahedra which share vertices with formation of slightly distorted tetragonal pseudo-layers linked by OH & sdot;& sdot;& sdot;X hydrogen bonds. The cationic centers (alkaline earths and rhenium) adopt a litharge-like arrangement. The structure seems to be very sensitive to the ratio of A2+ and X- constituents; it is as yet observed with calcium, only as a chloride, with strontium, only as a bromide, and with barium, only as an iodide

AB - Crystals of two new alkaline-earth perrhenate halides, Sr(ReO4)Br & sdot;2H2O (1) and Ba(ReO4)I & sdot;2H2O (2) were obtained upon evaporation of aqueous solutions at 95 - 100 degrees C. Both compounds are isostructural to the previously reported Ca(ReO4)Cl & sdot;2H2O and crystallize in orthorhombic symmetry with the space group Cmcm (a = 7.3906(5) & Aring;, b = 14.241(1) & Aring;, c = 7.1032(5) & Aring; for 1and a = 7.8624(4) & Aring;, b = 14.0202(5) & Aring;, c = 7.7190(3) & Aring; for 2). Both structures can be regarded as pseudo-layered 3D frameworks comprised of AO8X capped square antiprisms (A = Sr, Ba; X = Br, I) and ReO4 tetrahedra which share vertices with formation of slightly distorted tetragonal pseudo-layers linked by OH & sdot;& sdot;& sdot;X hydrogen bonds. The cationic centers (alkaline earths and rhenium) adopt a litharge-like arrangement. The structure seems to be very sensitive to the ratio of A2+ and X- constituents; it is as yet observed with calcium, only as a chloride, with strontium, only as a bromide, and with barium, only as an iodide

KW - Solution synthesis

KW - Perrhenates

KW - Mixed-anion compounds

KW - Layered structures

KW - CRYSTAL-STRUCTURE

KW - PERRHENIC ACID

KW - REORIENTATIONAL DYNAMICS

KW - COPPER PERRHENATE

KW - SALTS

KW - CHEMISTRY

KW - HALIDES

UR - https://www.mendeley.com/catalogue/da6a9227-83bf-38f6-b963-03af716fa7b4/

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-105033628230&origin=inward

U2 - 10.1007/s10870-026-01088-3

DO - 10.1007/s10870-026-01088-3

M3 - статья

VL - 56

JO - Journal of Chemical Crystallography

JF - Journal of Chemical Crystallography

SN - 1074-1542

IS - 2

ER -