Syntheses, properties, and structural characteristics of several new [tetrakis(1-pyrazolyl)borato]samarium(III) complexes: comparative study of the B(pyrazolyl)4 and BH(pyrazolyl)3
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- 作者：Onishi ; Masayoshi ; Kayano ; Koh-hei ; Inada ; Kei-ichiro ; Yamaguchi ; Hitoshi ; Nagaoka ; Junko ; et. al.
- 关键词：Polypyrazolylborato ; Samarium ; Crystal structure ; NMR fluxionality
- 刊名：Inorganica Chimica Acta
- 出版年：2004
- 出版时间：November 15, 2004
- 年：2004
- 卷：357
- 期：14
- 页码：4091-4101
- 全文大小：485 K
文摘
Although reactions of samarium(III) chloride, SmCl3??6H2O, with potassium hydrotris(1-pyrazolyl)borate K[BH(pz)3] (pz=1-pyrazolyl) in a molar ratio of (1/1) in THF afford [SmCl{BH(pz)3}2(Hpz)], similar reactions with K[B(pz)4] gave rise to separation of anhydrous H[B(pz)4]. The homoleptic eight-coordinate complex [Sm{B(pz)4}3] obtained from SmCl3??6H2O and threefold moles of K[B(pz)4] was allowed to react with twofold moles of K[BH(pz)3] to give a mixture of three major species [Sm{B(pz)4}n{BH(pz)3}(3???n)] (n