Self-Assembly of Repeated Rhomboidal Coordination Polymers from 4,4‘-Dipyridyl Disulfide and ZnX2 Salts (X = SCN, NO3, ClO4)
dataset
posted on 2005-01-05, 00:00 authored by Ryo Horikoshi, Masahiro Mikuriya4,4‘-Dipyridyl disulfide, 4pds, reacted with ZnX2 to afford M:L 1:2 one-dimensional coordination
polymers [Zn(SCN)2(4pds)2·(DMF)2]n [1·(DMF)2], [Zn(NO3)2(4pds)2]n (2), [Zn(NO3)2(4pds)2(H2O)2·(CH3OH)·(H2O)]n
[2(H2O)2·(CH3OH)·(H2O)], [Zn(NO3)2(4pds)2(H2O)·(H2O)4]n [2(H2O)·(H2O)4], [Zn(ClO4)2(4pds)2(DMSO)2]n [3(DMSO)2],
and [Zn(ClO4)2(4pds)2(H2O)2·(4pds)4]n [3(H2O)2·(4pds)4]. These compounds have repeated rhomboidal structures and
show a variety of guest inclusion properties without modification of the rhomboidal backbone. The clathration
properties and the chirality of the products are dependent on recrystallization solvents. Compounds 1·(DMF)2 and
2(H2O)2·(CH3OH)·(H2O) have an achiral chain structure, accommodating guest molecules between the chains.
Compounds 2, 2(H2O)·(H2O)4, and 3(DMSO)2 have a chiral structure, constructed from only one enantiomer of 4pds.
In 2(H2O)·(H2O)4, each chain is linked by counteranions and guest water molecules via hydrogen bonding to construct
a three-dimensional architecture. Compound 3(H2O)2·(4pds)4 also shows a chiral chain structure, carrying free 4pds
molecules via hydrogen bonds with coordination water molecules. Compound 3(DMSO)2 crystallizes in a chiral space
group, while others are achiral.
