TY - JOUR
T1 - Dimensionally Controlled Assembly of an External Stimuli-Responsive [Co2Fe2] Complex into Supramolecular Hydrogen-Bonded Networks
AU - Sekine, Yoshihiro
AU - Nihei, Masayuki
AU - Oshio, Hiroki
N1 - Funding Information:
This work was supported by a JSPS KAKENHI Grant Number JP26288021, JP25248014, and JP16H06523 (Coordination Asymmetry).
Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/4/19
Y1 - 2017/4/19
N2 - A stimuli-responsive tetranuclear complex was assembled into new aggregates with controllable dimensionality through directional hydrogen bonds (HBs). A cyanide-bridged tetranuclear complex cation, [Co2Fe2(CN)6(tp*)2(bpy*)4]2+ (abbreviated to 12+) (tp*=hydrotris(3,5-dimethylpyrazol-1-yl)borate and bpy*=4,4′-di-methyl-2,2′-bipyridine) has two terminal cyanide nitrogens and acts as a hydrogen-bond acceptor (HBA) with a linear bridging mode. Co-crystallization of 12+ with p-hydroquinone (H2Q), a hydrogen-bond donor (HBD) with two donor sites, led to a one-dimensional aggregate, 1(BPh4)2⋅(H2Q)⋅2 H2O (2), while a two-dimensional sheet with a honeycomb structure, 13(PF6)6⋅(H3PG)2⋅4 CH3CN⋅8 H2O (3), was obtained by co-crystallization with phloroglucinol (H3PG) acting as a three-way structure-directing HBD. Magnetic measurements revealed that 2 and 3 exhibited thermal and light-induced electron-transfer-coupled spin transitions (ETCSTs).
AB - A stimuli-responsive tetranuclear complex was assembled into new aggregates with controllable dimensionality through directional hydrogen bonds (HBs). A cyanide-bridged tetranuclear complex cation, [Co2Fe2(CN)6(tp*)2(bpy*)4]2+ (abbreviated to 12+) (tp*=hydrotris(3,5-dimethylpyrazol-1-yl)borate and bpy*=4,4′-di-methyl-2,2′-bipyridine) has two terminal cyanide nitrogens and acts as a hydrogen-bond acceptor (HBA) with a linear bridging mode. Co-crystallization of 12+ with p-hydroquinone (H2Q), a hydrogen-bond donor (HBD) with two donor sites, led to a one-dimensional aggregate, 1(BPh4)2⋅(H2Q)⋅2 H2O (2), while a two-dimensional sheet with a honeycomb structure, 13(PF6)6⋅(H3PG)2⋅4 CH3CN⋅8 H2O (3), was obtained by co-crystallization with phloroglucinol (H3PG) acting as a three-way structure-directing HBD. Magnetic measurements revealed that 2 and 3 exhibited thermal and light-induced electron-transfer-coupled spin transitions (ETCSTs).
KW - cobalt
KW - cyanides
KW - electron transfer
KW - hydrogen bonds
KW - iron
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U2 - 10.1002/chem.201605817
DO - 10.1002/chem.201605817
M3 - Article
C2 - 28111822
AN - SCOPUS:85012101601
VL - 23
SP - 5193
EP - 5197
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 22
ER -