CAJ | 학술논문

以二氰胺钠[Na(dca)]和异烟酰胺(L)为共配体分别与铜盐和镉盐反应合成了2种新的配合物:一维的[Cu(L)_2(dca)_2]·2MeOH(1)和二维的[Cd(L)_2(dca)_2](2).通过元素分析和红外光谱进行了表征.X射线晶体结构分析表明配合物1属于三斜晶系,P1空间群,α=0.68007(6)nm,b=0.73759(6)nm,c=1.15405(10)am,α=99.9550(10)°,β=90.3070(10)°γ=103.2940(10)°,V=0.55428(8)nm~3,Z=2.2属于单斜晶系,P2_1/c空间群,α=1.04377(7)am,b=0.95630(6)am,c=1.05593(7)nm,β=119.3330(10)°,V=0.91885(10)nm~3,Z=4.1是一个中性的配位链,Cu~Ⅱ之间通过双μ_(1,5)-dca桥而连接,L是单齿配位的.这些配位链通过链间的N-H…N氢键作用扩展为二维的层,甲醇分子位于层间,甲醇分子与酰胺基团之间的N-H…O,O-H…O氢键作用进一步将二维的层拓展为三维的网络.在2中,每个镉离子通过μ_(1,5)-dca连接相邻的4个镉离子,从而形成了二维的(4,4)网,层与层之间通过酰胺基团之间的氢键作用扩展为三维的网络.
이이청알납[Na(dca)]화이연선알(L)위공배체분별여동염화력염반응합성료2충신적배합물:일유적[Cu(L)_2(dca)_2]·2MeOH(1)화이유적[Cd(L)_2(dca)_2](2).통과원소분석화홍외광보진행료표정.X사선정체결구분석표명배합물1속우삼사정계,P1공간군,α=0.68007(6)nm,b=0.73759(6)nm,c=1.15405(10)am,α=99.9550(10)°,β=90.3070(10)°γ=103.2940(10)°,V=0.55428(8)nm~3,Z=2.2속우단사정계,P2_1/c공간군,α=1.04377(7)am,b=0.95630(6)am,c=1.05593(7)nm,β=119.3330(10)°,V=0.91885(10)nm~3,Z=4.1시일개중성적배위련,Cu~Ⅱ지간통과쌍μ_(1,5)-dca교이련접,L시단치배위적.저사배위련통과련간적N-H…N경건작용확전위이유적층,갑순분자위우층간,갑순분자여선알기단지간적N-H…O,O-H…O경건작용진일보장이유적층탁전위삼유적망락.재2중,매개력리자통과μ_(1,5)-dca련접상린적4개력리자,종이형성료이유적(4,4)망,층여층지간통과선알기단지간적경건작용확전위삼유적망락.
Reaction of sodium dicyanamide (Na(dca)) and isonicotinamide (L) with Cu(NO_3)_2.3H_2O or Cd(NO_3)_2· 6H_2O, generating two complexes, 1D [Cu(L)_2(dca)_2]·2MeOH (1) and 2D [Cd(L)_2(dca)_2] (2), which were characterized by elemental analysis and IR. X-ray crystal structure analysis displays that 1 crystallizes in the triclinic system, space group P1 with α=0.680 07(6) nm, b=0.737 59(6) nm, c=1.154 05(10) nm, α=99.955 0(10)°,β=90.307 0(10)°, γ=103.294 0(10)°, V=0.554 28(8) nm~3, Z=2.2 is in the monoclinic system, space group P2_1/c with α=1.043 77(7) nm, b=0.956 30(6) nm, c=1.055 93(7) nm,β=119.333 0(10)°, V=0.918 85(10) nm~3, Z=4.1 is a neutral 1D coordination chain, in which the Cu~Ⅱ centers are interlinked through doubleμ_(1,5)-dca bridges and L acts as monodentate terminal ligand. These coordination chains are further expanded into a 2D layer through N-H…N hydrogen bonds. The N-H ……O, O-H……O interactions from CH_3OH molecules and L generate a 3D supramolecular architecture. While in 2, each cadmium ion coordinates to four dca anions in aμ_(1,5) mode to link neighboring four metal ions to generate a 2D (4,4) sheet. The N-H……O and N-H……N hydrogen-bonding interactions between L expand these layers into a 3D supramolecular network.