steinate) (L,L-tbc). Three isomers, trans(S), trans(N), and trans(O), were chromatographically isolated for each of the bis L-sec and L-sbc complexes, while only the trans(O) isomer was isolated for each of the L,L-tbsmc, L,L-ebc, and L,L-tbc complexes. These isomers were characterized from their absorption, CD, and 1H and 13C NMR spectra. The trans(O) isomers of the bis type and L,L-tbsmc complexes
制备了五种[Co(terdentate-N,S,O)2]和[Co(sexidentate-N2,S2,O2)]型
钴(III)配合物;此处三齿-N,S,O 表示
S-乙基-L-半胱氨酸 (L-sec) 和
S-苄基-L-半胱氨酸 (L-sbc),而六齿-N2,S2,O2 表示 N,N'-三亚甲基双(
S-甲基-L-半胱氨酸) (L,L-tbsmc)、S,S'-亚乙基双(
L-半胱氨酸) (L,L-ebc) 和 S,S'-三亚甲基双(
L-半胱氨酸) (L ,L-tbc)。两种双 L-sec 和 L-sbc 复合物的三种异构体,反式 (S)、反式 (N) 和反式 (O) 被色谱分离,而每个复合物仅分离反式 (O) 异构体L,L-tbsmc、L,L-ebc 和 L,L-tbc 复合物。这些异构体的特征在于它们的吸收、CD 以及 1H 和 13C NMR 光谱。bis 型的反式 (O) 异构体和 L,L-tbsmc