TY - JOUR
T1 - Lattice water-induced helical stacking of tartrate-bridged dinuclear palladium(II) complexes
T2 - The role of hydrogen bonding
AU - Ohno, Keiji
AU - Sugaya, Tomoaki
AU - Kato, Masaru
AU - Matsumoto, Noriko
AU - Fukano, Ryoko
AU - Ogino, Yasuyo
AU - Kaizaki, Sumio
AU - Fujihara, Takashi
AU - Nagasawa, Akira
PY - 2014/8/6
Y1 - 2014/8/6
N2 - Hydrous crystals of [{PdII(bpy)}2(μ-x-tart)] ·nH2O (bpy: 2,2'-bipyridine; tartH2
2-: tartrate; 1a: x = l, n = 6; 2a: x = d, n = 6; 3a: x = dl, n = 4; 4a: x = meso, n = 4) and anhydrous crystals of [{PdII(bpy)}2(μ-l-tart) ] (1b) were isolated from aqueous and MeOH solutions, respectively. X-ray crystallography revealed the stacked structures of clamshell-like dinuclear units in 1a-3a and 1b, where intramolecular metal-metal and π-π stacking interactions were observed. Right- and left-handed helically stacked columns were formed in the 1a and 2a crystals, respectively. The significant role of hydrogen bonding among lattice water molecules and tartrate is suggested because 1b exhibited a zigzag arrangement only through intermolecular metal-metal interactions. In 3a, l- and d-tart units stacked alternately in a zigzag arrangement with intermolecular π-π interactions. In 4a, dimeric aggregates of the twisted dinuclear units further formed a 2D sheet architecture.
AB - Hydrous crystals of [{PdII(bpy)}2(μ-x-tart)] ·nH2O (bpy: 2,2'-bipyridine; tartH2
2-: tartrate; 1a: x = l, n = 6; 2a: x = d, n = 6; 3a: x = dl, n = 4; 4a: x = meso, n = 4) and anhydrous crystals of [{PdII(bpy)}2(μ-l-tart) ] (1b) were isolated from aqueous and MeOH solutions, respectively. X-ray crystallography revealed the stacked structures of clamshell-like dinuclear units in 1a-3a and 1b, where intramolecular metal-metal and π-π stacking interactions were observed. Right- and left-handed helically stacked columns were formed in the 1a and 2a crystals, respectively. The significant role of hydrogen bonding among lattice water molecules and tartrate is suggested because 1b exhibited a zigzag arrangement only through intermolecular metal-metal interactions. In 3a, l- and d-tart units stacked alternately in a zigzag arrangement with intermolecular π-π interactions. In 4a, dimeric aggregates of the twisted dinuclear units further formed a 2D sheet architecture.
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U2 - 10.1021/cg500143w
DO - 10.1021/cg500143w
M3 - Article
AN - SCOPUS:84905699984
VL - 14
SP - 3675
EP - 3679
JO - Crystal Growth and Design
JF - Crystal Growth and Design
SN - 1528-7483
IS - 8
ER -