Formate complexes of titanium(IV) supported by a tris(phenolato)-amine ligand

Formate complexes of titanium(IV) supported by a tris(phenolato)-amine ligand
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三(酚基)-胺配体负载的钛(IV)甲酸盐配合物

DOI:
10.1016/j.poly.2018.11.025
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发表时间:
2019
期刊:
影响因子:
2.6
通讯作者:
Spaniol
Spaniol
中科院分区:
化学3区
文献类型:
--
作者:
Höllerhage;van Krüchten;Spaniol

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本文报道了用三酚基胺配体稳定的钛(IV)的末端和桥接甲酸盐配合物的合成。通过氯化物前体[(O3 N)TiCl]与甲酸钠的盐复分解反应合成了末端甲酸盐配合物[(O3 N)Ti(OCHO)](H3(O3 N)=三(4,6-二叔丁基-2-羟基苄基)胺)。通过苄基配合物[(O3 N)Ti(CH 2 Ph)]与[PhMe 2 NH][B(C6 F5)4]的质子分解反应合成了阳离子钛(IV)配合物[(O3 N)Ti(Et 2 O)][B(C6 F5)4],将末端甲酸盐与该配合物反应,得到桥连甲酸盐配合物[{(O3 N)Ti}2(μ-OCHO-ηO:ηO′)][B(C6 F5)4],其结构通过单晶X射线衍射表征。用KHMDS(HMDS = N(SiMe 3)2)去质子化甲酸根配体以得到CO2二价阴离子的尝试失败了,但导致形成了[(O3 N)Ti{N(SiMe 3)2}]。
The synthesis of terminal and bridging formate complexes of titanium(IV) stabilized by a tris(phenolato)-amine ligand is described. The terminal formate complex [(O3N)Ti(OCHO)] (H3(O3N) = tris(4,6-di-tert-butyl-2-hydroxybenzyl)amine) was synthesized by salt metathesis of the chloride precursor [(O3N)TiCl] with sodium formate. Reaction of the terminal formate with the cationic titanium(IV) complex [(O3N)Ti(Et2O)][B(C6F5)4], synthesized by protonolysis of the benzyl complex [(O3N)Ti(CH2Ph)] with [PhMe2NH][B(C6F5)4] gave the bridging formate complex [{(O3N)Ti}2(μ-OCHO–ηO:ηO′)][B(C6F5)4] that was structurally characterized by single crystal X-ray diffraction. Attempts at deprotonation of the formate ligand by KHMDS (HMDS = N(SiMe3)2) to give the CO2dianion failed but led to the formation of [(O3N)Ti{N(SiMe3)2}] instead.
DOI: 10.1016/j.poly.2005.12.027
发表时间: 2006
期刊: Polyhedron
影响因子: 2.6
作者:
A. J. Nielson;Chaohong Shen;J. Waters
通讯作者: J. Waters
通过络合甲酸盐的去质子化和脱羰基化合成四配位钛(IV)氧阴离子。
DOI: --
发表时间: 2005
影响因子: 4.9
作者:
Arjun Mendiratta;Joshua S. Figueroa;C. Cummins
通讯作者: C. Cummins
DOI: 10.1007/s00604-002-0956-y
发表时间: 2003
期刊: Microchimica Acta
影响因子: 5.7
作者:
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通讯作者: I. Casals