利用1-萘胺分别与邻香草醛和对甲氧基水杨醛反应合成两种新型希夫碱化合物L~(-1)和L~(-2);用CoCl_26H_2O分别与L_(-1)和L~2进行反应,获得了与其相对应两种新的配合物CoCl_2L_(-1)(1)和CoCl_2L~2_2(2).通过元素分析、红外光谱、~1H-NMR及X射线粉末衍射等测试手段,对新型希夫碱及其配合物进行了表征.结果表明,两种希夫碱酚羟基上的H原子与N原子相吸均形成了分子内氢键,并以氢键连接构成了新的六元环.L~1和L~2作为配体与CoCl_2形成配合物时,酚羟基上的H原子没有脱去.配合物1由L~1和CoCl_2以摩尔比1:1组成,配体上酚羟基氧及甲氧基氧同时与中心原子Co配位,形成双齿整合配位构型;配合物2由L~2和CoCl_2以摩尔比2:l组成,配体上只有酚羟基氧参与中心原子Co的配位,而甲氧基氧未参与配位.配合物1,2中Co原子均为四配位的.
Two novel Schiff bases were synthesized with 1-naphthylamine and o-vanillin / 4-methoxy-2-hydroxybonzaldehyde, respec-characterized by elemental analysis,IR, ~1H NMR spectroscopy and X-ray powder diffraction, etc. The results showed that, in the two Schiff bases, H atoms of phenolic hydroxyls attracted with N atoms to form intramolecular hydrogen bonds, and new six-membered rings formed with the hydrogen bond connections, respectively. When the complexes were synthesized with Schiff bases as ligands and COCl_2, the H atoms of the phenolic hydroxyls did not leave away. The complex 1 was a composite of one molar ligand 1 and one molar CoCl_2. The oxygen atoms of phenolic hydroxyls and mothoxys were coordinated to Co forming bidentate chelate motifs. The complex 2 was a composite of two molar ligands 2 and one molar COCl_2, the oxygen atoms of phenolic hydroxyls groups were coordinated to Co, and the oxygen atoms of methoxys, however, were not involved in coordinating to Co. Both Co atoms in complex 1 and 2 were four-coordinated.
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