TY - JOUR
T1 - Heterometallic SrII-MII (M=Co, Ni, Zn and Cu) Coordination Polymers
T2 - Synthesis, Temperature-Dependent Structural Transformation, and Luminescent and Magnetic Properties
AU - Chen, Yanmei
AU - Gao, Qian
AU - Chen, Wenqian
AU - Gao, Dandan
AU - Li, Yahong
AU - Liu, Wei
AU - Li, Wu
PY - 2015/2
Y1 - 2015/2
N2 - The use of pyridine-2,4-dicarboxylic acid (H2pydc) in the construction of SrII and SrII-MII(M=Co, Ni, Zn and Cu) coordination polymers is reported. Eight complexes, that is, [Sr(pydc)H2O]n(1), [MSr(pydc)2(H2O)2]n (M=Co (2), Ni (3), Zn (4)), [ZnSr(pydc)2(H2O)7]n·4nH2O (5), [SrCu(pydc)2]n (6), [SrCu(- pydc)2(H2O)3]n·2nH2O (7), and [Cu3Sr2(pydc)4(Hpydc)2(H2O)2]n (8), have been synthesized via dexterously choosing the appropriate strontium sources and transition metal salts, and rationally controlling the temperature of the reaction systems. Complexes 1, 2 (3, 4), 6, and 8 display four types of 3- D framework structures. Complexes 5 and 7 exhibit a 2-D network and a 1-D chain structure, respectively. The 2-D complex 7 can be reversibly transformed into 3-D compound 6 through temperature-induced solvent-mediated structural transformation. The luminescent property studies indicated that complex 1 shows a strong purple luminescent emission and 4 exhibits a strong violet luminescence emission. The magnetic properties of 2, 3, and 8 were also studied. Antiferromagnetic MII···MII interactions were determined for these complexes.
AB - The use of pyridine-2,4-dicarboxylic acid (H2pydc) in the construction of SrII and SrII-MII(M=Co, Ni, Zn and Cu) coordination polymers is reported. Eight complexes, that is, [Sr(pydc)H2O]n(1), [MSr(pydc)2(H2O)2]n (M=Co (2), Ni (3), Zn (4)), [ZnSr(pydc)2(H2O)7]n·4nH2O (5), [SrCu(pydc)2]n (6), [SrCu(- pydc)2(H2O)3]n·2nH2O (7), and [Cu3Sr2(pydc)4(Hpydc)2(H2O)2]n (8), have been synthesized via dexterously choosing the appropriate strontium sources and transition metal salts, and rationally controlling the temperature of the reaction systems. Complexes 1, 2 (3, 4), 6, and 8 display four types of 3- D framework structures. Complexes 5 and 7 exhibit a 2-D network and a 1-D chain structure, respectively. The 2-D complex 7 can be reversibly transformed into 3-D compound 6 through temperature-induced solvent-mediated structural transformation. The luminescent property studies indicated that complex 1 shows a strong purple luminescent emission and 4 exhibits a strong violet luminescence emission. The magnetic properties of 2, 3, and 8 were also studied. Antiferromagnetic MII···MII interactions were determined for these complexes.
KW - Alkaline earth metals
KW - Heterometallic complexes
KW - Luminescence
KW - Magnetic properties
KW - Structural transformation
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U2 - 10.1002/asia.201403025
DO - 10.1002/asia.201403025
M3 - Article
AN - SCOPUS:85027948666
VL - 10
SP - 411
EP - 421
JO - Chemistry - An Asian Journal
JF - Chemistry - An Asian Journal
SN - 1861-4728
IS - 2
ER -