Formation of dimeric and polymeric W/Cu/S clusters via degradation or expansion of the cluster core in [Et4N]4[WS4Cu4I6]

被引:51
|
作者
Huang, Yu-Jian [1 ,2 ]
Song, Ying-Lin [3 ]
Chen, Yang [1 ]
Li, Hong-Xi [1 ]
Zhang, Yong [1 ]
Lang, Jian-Ping [1 ,2 ]
机构
[1] Suzhou Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Organ Chem, Shanghai 200032, Peoples R China
[3] Suzhou Univ, Sch Phys Sci & Technol, Suzhou 215006, Peoples R China
基金
中国国家自然科学基金;
关键词
NONLINEAR-OPTICAL-PROPERTIES; CRYSTAL-STRUCTURES; COORDINATION POLYMER; STRUCTURAL-CHARACTERIZATION; SUPRAMOLECULAR COMPOUNDS; HYDROTHERMAL SYNTHESIS; PREFORMED CLUSTERS; THIN-FILMS; COMPLEXES; CUBANE;
D O I
10.1039/b816312j
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The reactions of a precursor cluster [Et4N](4)[WS4Cu4I6] (1) with two equiv. of 1,1'-(1,4-butanediyl) bis(3,5-dimethyl-pyrazole) (bbd) or 1,3,5-tris(3,5-dimethyl-pyrazolyl-1-ylmethyl)2,4,6-trimethylbenzene (tdtb) in MeCN/DMF afforded the dimeric clusters [WS4Cu3I(mu-bbd)](2) (2) and [{WS4Cu3(tdtb)}(2)(mu-I)(2)]center dot 2DMF (3 center dot 2DMF), respectively. Solvothermal reactions of 1 with two equiv. of bbd in MeCN/DMF at 90 degrees C for 24 h resulted in the formation of the dimeric cluster [Et-4 N](6)[{WS4Cu5(mu-I)(2)I-4}(2)(mu-bbd)] (4) while those of 1 with two equiv. of 1,3,5-tris(imidazol-1-ylmethyl)2,4,6-trimethylbenzene (titb) in DMF at 120 degrees C afforded the polymeric cluster {[WS4Cu2( titb)]center dot 0.5H(2)O}(n) (5). Compounds 2-5 were characterized by elemental analysis, IR, UV-vis, H-1 NMR and single-crystal X-ray crystallography. Compound 2 has a double nido-shaped structure in which two nido-shaped [WS4Cu3] cores are connected by a pair of bbd ligands while 3 has a double butterfly-shaped structure in which two [WS4Cu3(tdtb)] fragments are linked by two bridging iodides. Compound 4 has a double-double half-open cubane-like structure in which a couple of double half-open cubane-like [WS4Cu5] cores are bridged by one bbd ligand. Compound 5 has a unique two-fold interpenetrated 3D (10(2)center dot 12)(core)(10(2)center dot 12)(titb) network in which each linear [WS4Cu2] core acts as a T-shaped 3-connecting node and each titb ligand works as a trigonal pyramidal 3-connecting node. The core structures of 2-5 are different from the saddle-shaped [WS4Cu4] core of 1, which may be attributed to the degradation or expansion of the cluster core of 1 during the reactions. In addition, the third-order non-linear optical (NLO) properties of 1-4 in DMF were also investigated by using Z-scan techniques at 532 nm.
引用
收藏
页码:1411 / 1421
页数:11
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