An unusual configuration for a bis(4-acylpyrazolon-5-ate)diorganotin species

An unusual configuration for a bis(4-acylpyrazolon-5-ate)diorganotin species
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双(4-酰基吡唑啉-5-ate)二有机锡物种的不寻常构型

DOI:
10.1021/om990170o
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发表时间:
1999
期刊:
影响因子:
2.8
通讯作者:
C. Pettinari
C. Pettinari
中科院分区:
化学2区
文献类型:
--
作者:
F. Caruso;M. Rossi;F. Marchetti;C. Pettinari

文献摘要

被引文献

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用x射线衍射法测定了双[1-(4-(三氟甲基)苯基)-3-甲基-4-苯甲酰吡唑龙-5-ato]二甲基锡(IV)的分子结构,显示出金属位于反转中心的八面体构型。在这种反常的反构型中,每个配体上相等的Sn−O和C−O键长度表明对称的O,O '双齿形式。除了这个八面体外,CDCl3中的119Sn核磁共振显示出一个5位配合物,可能是由于Sn−O(酰基)键的损失。
The molecular structure of bis[1-(4-(trifluoromethyl)phenyl)-3-methyl-4-benzoylpyrazolon-5-ato]dimethyltin(IV) determined by X-ray diffraction methods shows an octahedral configuration with the metal on an inversion center. In this anomalous anti configuration equal Sn−O and C−O bond lengths in each ligand indicate a symmetrical O,O‘ bidentate form. In addition to this octahedral species, 119Sn NMR in CDCl3 shows a 5-coordinate complex, probably due to the loss of a Sn−O(acyl) bond.