Spacer length-controlled assembly of [Cu<sub>n</sub>I<sub>n</sub>]-based coordination polymers from CuI and bis(4-phenylpyrimidine-2-thio)alkane ligands
作者:Xiao-Juan Yang、Hong-Xi Li、Zhong-Lin Xu、Hai-Yan Li、Zhi-Gang Ren、Jian-Ping Lang
DOI:10.1039/c2ce06312c
日期:——
Reactions of CuI with bis(4-phenylpyrimidine-2-thio)alkane ligands with different spacer lengths, [(phpy)(CH2)n(phpy)] (phpyH = 4-phenylpyrimidine-2-thiol; n = 1, bphpym; n = 2, bphpye; n = 3, bphpypr; n = 4, bphpyb; n = 5, bphpyp; n = 6, bphpyh), afforded a set of six [CunIn]-based coordination polymers, [Cu(μ3-I)}2(phpym)]n (1), [Cu(μ3-I)}4(bphpye)]n (2), [(MeCN)Cu3(μ-I)2(μ4-I)}2(bphpypr)2]n (3), [((MeCN)Cu)(μ-I)}2(bphpyb)]n (4), [Cu2(μ-I)(μ3-I)}2(bphpyp)2]n (5) and [((MeCN)Cu)(μ3-I)}2Cu(μ-I)}2(bphpyh)2]n (6), respectively. Compounds 1–6 were characterized by elemental analysis, IR and single-crystal X-ray crystallography. 1 and 2 consist of an unique 2D network in which the 1D staircase [Cu2I2]n chains are linked by phpym or phpye ligands via the μ-η1(N)-η1(N) or μ-η1(N),η1(S)-η1(N),η1(S) coordination modes, respectively. Complexes 3 and 5 consist of double butterfly-shaped (MeCN)Cu3(μ-I)2(μ4-I)}2 units or chair-like [Cu2(μ-I)(μ3-I)]2 units that are linked to their neighboring ones by pairs of bphpypr or bphpyp bridges to form a 1D double chain. 4 contains a 1D zigzag chain assembled by dimeric [(MeCN)Cu}(μ-I)]2 cores and bphpyb ligands. In 6, unique 1D tandem-rhomboid [Cu2I2]n chains are connected by dphpyh ligands to form a 2D staircase network. In addition, the photoluminescent properties of 1–6 in the solid state at ambient temperature were investigated.
CuI 与具有不同间隔长度的双(4-苯基嘧啶-2-硫)烷配体 [(phpy)(CH2)n(phpy)] (phpyH = 4-苯基嘧啶-2-硫醇;n = 1,bphpym;n = 2,bphpye;n = 3,bphpypr;n = 4,bphpyb;n = 5,bphpyp;n = 6,bphpyh),得到了一组六种基于[CunIn]的配位聚合物,即[Cu(μ3-I)}2(phpym)]n (1)、[Cu(μ3-I)}4(bphpye)]n (2)、[(MeCN)Cu3(μ-I)2(μ4-I)}2(bphpypr)2]n (3)、((MeCN)Cu)(μ-I)}2(bphpyb)]n(4)、[Cu2(μ-I)(μ3-I)}2(bphpyp)2]n(5)和[((MeCN)Cu)(μ3-I)}2Cu(μ-I)}2(bphpyh)2]n(6)。化合物 1-6 通过元素分析、红外光谱和单晶 X 射线晶体学进行了表征。1 和 2 由独特的二维网络组成,其中一维阶梯状 [Cu2I2]n 链分别由 phpym 或 phpye 配体通过 μ-η1(N)-η1(N) 或 μ-η1(N),η1(S)-η1(N),η1(S) 配位模式连接。配合物 3 和 5 由双蝶形(MeCN)Cu3(μ-I)2(μ4-I)}2 单元或椅状[Cu2(μ-I)(μ3-I)]2 单元组成,这些单元通过成对的 bphpypr 或 bphpyp 桥与相邻单元相连,形成一维双链。4 包含一条由二聚体[(MeCN)Cu}(μ-I)]2 核和 bphpyb 配体组装而成的一维之字链。在 6 中,独特的一维串联斜方体[Cu2I2]n 链通过 dphpyh 配体连接形成二维阶梯网络。此外,还研究了 1-6 在常温固态下的光致发光特性。