Azolyl and thienyl iron(II) complexes have been synthesized by the addition of 1-phenylpyrazol-5-yllithium, 5-(4,5-dihydro-4,4-dimethyloxazolin-2-yl)-2-thienyllithium, 2-(4,5-dihydro-4,4-dimethyloxazolin-2-yl)-3-thienyllithium or 5-(2-pyridyl)-2-thienyllithium to [Fe(cp)(CO)2Cl](cp =η-C5H5). Protonation or alkylation of these precursor complexes yielded the corresponding amino(organo)-, organo(thio)- or heterometallacyclic alkoxy(amino)- and hydroxy(amino)-carbene complexes as well as compounds in which the ligand shows more pyridinium character. The molecular structures of the pyrazolyl complex [Fe(cp)(CO)2([graphic omitted]Ph)] and the pyrazolinylidene complex [Fe(cp)(CO)2([graphic omitted]Ph)][CF3SO3] have iron–carbon bond lengths of 1.981(2) and 1.969(5)Å respectively.
通过添加
1-苯基吡唑-5-
锂、5-(4,5-二氢-4、2-(4,5-二氢-4,4-二甲基
噁唑啉-2-基)-3-
噻吩锂或 5-(2-
吡啶基)-2-
噻吩锂与[Fe(cp)(CO)2Cl](cp =η-
C5H5)相加而合成。)对这些前体络合物进行质子化或烷基化,可得到相应的
氨基(有机)-、有机(
硫基)-或杂茂烷氧基(
氨基)-和羟基(
氨基)-烯络合物,以及
配体显示出更多
吡啶特征的化合物。
吡唑络合物[Fe(cp)(CO)2([图略]Ph)]和
吡唑啉络合物[Fe(cp)(CO)2([图略]Ph)][CF3SO3]的分子结构的
铁碳键长度分别为 1.981(2)埃和 1.969(5)埃。