CAJ | 학술논문

通过水热法合成了4-氟苯甲酸桥联的新型双核钴(Ⅱ)配合物[Co2(2,2-bpy)2(μ-L)2(L)2(μ-H2O)](HL=4-fluorobenzoic acid)(1)并测定了其晶体结构。结果表明配合物1属单斜晶系,空间群C2/c,晶胞参数为a=22．204(4)?,b=15．777(3)?,c=15．184(3)?,β=123．71(3)°,Z=4,Mr=1004．65,V=4424．7(15)?3,μ=0．829 mm-1,Dc=1．508g/cm3,F(000)=2048,R1=0．0386,wR2=0．1006。配合物1具有双核蝴蝶状结构,中心钴(Ⅱ)离子处于CoN2 O4八面体配位环境中,每个钴(Ⅱ)分别与来自一个2,2-联吡啶的2个N原子、三个4-氟苯甲酸根的3个O原子和一个配位水分子的1个O原子配位,两个钴(Ⅱ)被2个4-氟苯甲酸根和1个桥联水分子桥联为双核蝴蝶状结构。分子间通过氢键和π-π堆积作用,构成了3D超分子网状结构。变温磁化率测试结果表明该化合物在5~300K范围内显示反铁磁性。
통과수열법합성료4-불분갑산교련적신형쌍핵고(Ⅱ)배합물[Co2(2,2-bpy)2(μ-L)2(L)2(μ-H2O)](HL=4-fluorobenzoic acid)(1)병측정료기정체결구。결과표명배합물1속단사정계,공간군C2/c,정포삼수위a=22．204(4)?,b=15．777(3)?,c=15．184(3)?,β=123．71(3)°,Z=4,Mr=1004．65,V=4424．7(15)?3,μ=0．829 mm-1,Dc=1．508g/cm3,F(000)=2048,R1=0．0386,wR2=0．1006。배합물1구유쌍핵호접상결구,중심고(Ⅱ)리자처우CoN2 O4팔면체배위배경중,매개고(Ⅱ)분별여래자일개2,2-련필정적2개N원자、삼개4-불분갑산근적3개O원자화일개배위수분자적1개O원자배위,량개고(Ⅱ)피2개4-불분갑산근화1개교련수분자교련위쌍핵호접상결구。분자간통과경건화π-π퇴적작용,구성료3D초분자망상결구。변온자화솔측시결과표명해화합물재5~300K범위내현시반철자성。
The title compound,[Co2(2,2′-bpy)2(μ-L)2(L)2(μ-H2O)](HL=4-fluorobenzoic acid)(1)has been hydrothermally synthesized,and X-ray single-crystal diffraction analysis shows that the crystal of complex 1 belongs to monoclinic system with space group C2/c,a=22. 204(4)?,b=15. 777(3)?,c=15. 184(3)°,β=123. 71(3)°,Z=4,Mr=1004. 65,V=4424. 7(15)?3,μ=0. 829 mm-1 ,Dc=1. 508g/cm3 ,F(000)=2048,R1=0. 0386,wR2=0. 1006. Each Co(Ⅱ) atom is coordinated by two nitrogen at-oms from one 2,2′-bipyridine ligand,three oxygen atoms from three 4-fluorobenzoic ions and another one oxygen atom from one wa-ter molecule,and the two Co(Ⅱ) atoms are connected by two 4-fluorobenzoic ions and one bridged water molecule. The dinuclear molecules are interlinked by hydrogen bonds and π-π stacking interactions,forming a 3D supramolecular network. Magnetic meas-urements show that the complex is antiferromagnetic in the 5~300K range.