In:
CrystEngComm, Royal Society of Chemistry (RSC), Vol. 24, No. 39 ( 2022), p. 6964-6973
Abstract:
Single crystals of a novel phase, potassium manganese silicate hydrate, K 3 Mn 4 Si 10 O 24.33 (H 2 O,OH) 3 , doped with B and V, were obtained under hydrothermal conditions and studied using scanning electron microscopy, microprobe analysis and low temperature synchrotron X-ray diffraction. The title structure represents an original silicate framework assembled from layers with various n -membered SiO 4 rings that restrict channels open in the [001] direction. The corrugated chains of face-sharing MnO 6 octahedra are incorporated into the space between “pendant” vertices of the tetrahedra framing 12-membered windows. This is the first example of combining two topologically different trimeric clusters of octahedra sharing faces into a single construction. The framework channels with 5- and 6-membered windows incorporate K atoms, and H 2 O molecules are located in the channels with 7-membered openings. We assume that the stability of this crystal structure is due to the partial substitution of Mn for V and Si for B. The magnetic subsystem in the title compound represents a rare case of the quasi-one-dimensional arrangement of MnO 6 octahedra forming sawtooth-like chains. Measurements of magnetization and heat capacity of K 3 Mn 4 Si 10 O 24.33 (H 2 O,OH) 3 /V,B indicate the absence of long-range order up to 2 K. Structural features of the K 3 Mn 4 Si 10 O 24.33 (H 2 O,OH) 3 /V,B allow supposing it as potential multifunctional material, electrochemically active and having properties of low-dimensional magnet.
Type of Medium:
Online Resource
ISSN:
1466-8033
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2025075-7
