CAJ | 학술논문

通过水热法合成了1个双核铬配合物[Cr2(OH)2(2-pea)4]·3H2O(2-Hpca=2-吡嚷甲酸),并对其进行了X-射线单晶衍射、红外光谱、元素分析、荧光和热的表征及研究.该配合物属于单斜晶系,P21/c空间群.晶体学数据:a=1.566 35(15),b--0.847 70(6),c=1.97460(18) nm,β=90.645 0(10)°,C20H20Cr2N8O13,Mr=684.44,V=2.621 7(4) nm3,Dc=1.734 g·cm-3,F(000)=1 392,μ=0.913 cm-1,Z=4,最终R=0.0447,wR=0.1120用于3251个可观测点.在晶体结构中,每个铬原子均为六配位,其中来自两分子2-吡嗪甲酸的2个氮原子、2个羧酸基氧原子和2个桥连羟基上的氧原子,呈现畸变的八面体几何构型.
통과수열법합성료1개쌍핵락배합물[Cr2(OH)2(2-pea)4]·3H2O(2-Hpca=2-필양갑산),병대기진행료X-사선단정연사、홍외광보、원소분석、형광화열적표정급연구.해배합물속우단사정계,P21/c공간군.정체학수거:a=1.566 35(15),b--0.847 70(6),c=1.97460(18) nm,β=90.645 0(10)°,C20H20Cr2N8O13,Mr=684.44,V=2.621 7(4) nm3,Dc=1.734 g·cm-3,F(000)=1 392,μ=0.913 cm-1,Z=4,최종R=0.0447,wR=0.1120용우3251개가관측점.재정체결구중,매개락원자균위륙배위,기중래자량분자2-필진갑산적2개담원자、2개최산기양원자화2개교련간기상적양원자,정현기변적팔면체궤하구형.
A binuclear chromium complex [Cr2(OH)2(2-pca)4]·3H2O (2-pca=pyrazine-2-carboxylate anion) was hydrothermally prepared and characterized by single crystal X-ray diffraction,FTIR spectra,elemental analysis,luminescence and thermal analysis.It crystallizes in the monoclinic system,space group P21/c,with a=1.566 35(15),b=0.847 70(6),c=1.974 60(18) nm,β=90.645 0(10)°,C20H20Cr2N8O13,Mr=684.44,V=2.621 7(4) nm3,Dc=1.734 g·em-3,F(000)=1 392,μ=0.913 cm-1,Z=4,the final R=0.0447 and wR=0.1120 for 3 251 reflections with I＞2σ(I).X-ray diffraction analysis reveals that each Cr(Ⅲ) center is octahedrally coordinated by two nitrogen atoms and two oxygen atoms from two pyrazine-2-carboxylate anion ligands,and another two oxygen atoms from two hydroxyl groups.The two Cr(Ⅲ) centers are bridged by two μ2-O of OH group.