Unusual structural changes going from Li + to Cs + in [W(CN) 6 (bpy)] 2− ion salts: the Na + case

Two complexes of the formula Na 2 [W(CN) 6 (bpy)]·6H 2 O ( 1 ) and Na 2 [W(CN) 6 (bpy)]·5H 2 O·CH 3 CN ( 2 ) were synthesized, structurally characterized, described and compared with their lithium, potassium, rubidium and cesium analogues. This finalizes the description of structures of [W(CN) 6 (bp...

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Bibliographic Details
Published in:CrystEngComm 2021-06, Vol.23 (24), p.4301-4311
Main Authors: Hodorowicz, Maciej, Jurowska, Anna, Szklarzewicz, Janusz
Format: Article
Language:English
Subjects:
Alkali metals
Cesium
Crystallography
Lithium
Rubidium
Thickness
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Summary:Two complexes of the formula Na 2 [W(CN) 6 (bpy)]·6H 2 O ( 1 ) and Na 2 [W(CN) 6 (bpy)]·5H 2 O·CH 3 CN ( 2 ) were synthesized, structurally characterized, described and compared with their lithium, potassium, rubidium and cesium analogues. This finalizes the description of structures of [W(CN) 6 (bpy)] 2− ion salts with all alkali metals. The salts crystalize in the triclinic P 1̄ space group. In all the salts, layered structures are observed with weak hydrophobic bpy–bpy zipper like interactions between layers. The unexpected changes in W–W distance, thickness of layers, density and other parameters going from Li + to Cs + are described and discussed.
ISSN:1466-8033
1466-8033
DOI:10.1039/D1CE00328C