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tetrachloro(cyclopentadienyl)niobium(V)

中文名称
——
中文别名
——
英文名称
tetrachloro(cyclopentadienyl)niobium(V)
英文别名
cyclopentadienylniobium(V) tetrachloride;[CpNbCl4]
tetrachloro(cyclopentadienyl)niobium(V)化学式
CAS
——
化学式
C5H5Cl4Nb
mdl
——
分子量
299.813
InChiKey
GKEMWFXJIFQMQF-UHFFFAOYSA-J
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    4.07
  • 重原子数:
    10
  • 可旋转键数:
    0
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.0
  • 拓扑面积:
    0
  • 氢给体数:
    0
  • 氢受体数:
    0

反应信息

  • 作为反应物:
    描述:
    tetrachloro(cyclopentadienyl)niobium(V)一氧化碳氢化铝 、 mercury dichloride 作用下, 以 四氢呋喃 为溶剂, 以60-80的产率得到{CpNbCl(CO)2}2(μ-Cl)2
    参考文献:
    名称:
    单体和二聚的铌(II)和铌(III)环戊二烯基羰基和炔配合物
    摘要:
    DOI:
    10.1021/om00124a026
  • 作为产物:
    描述:
    三丁基环戊二烯基锡五氯化铌正庚烷 为溶剂, 以92%的产率得到tetrachloro(cyclopentadienyl)niobium(V)
    参考文献:
    名称:
    铌的二环戊二烯基二茂合物的制备
    摘要:
    已经合成了含有两个不同的环戊二烯基配体的铌(IV)的二环戊二烯基衍生物。获得的产物通过质谱和EPR光谱法以及通过元素分析来表征。从NbCl 5开始,明确的选择路线通过单环戊二烯基络合物进行。的选择性地获得几(RCP)NbCl可能性4种从RC化合物5 ħ 4 SnBu 3和NbCl的庚烷悬浮液5被呈现。给出了通过还原(RCp)NbCl 4形成单环戊二烯基三氯铌(IV)部分的证据。用氯化铝或氯化亚锡在乙腈中,或用RC 5 H 4 SnBu 3单取代四氯化铌。
    DOI:
    10.1016/s0022-328x(00)82230-5
  • 作为试剂:
    参考文献:
    名称:
    通过单电子转移 (SET) 工艺从烷基卤化物制备烷基锌卤化物的一锅酮合成:福山酮合成的新扩展
    摘要:
    在硫酯和 Pd 催化剂的存在下,通过将卤代烷原位活化为卤代烷基锌,已经开发出一锅酮合成。新方法为我们提供了一个可靠的选择,用于复杂分子会聚合成的后期偶联,使用接近 1:1 的偶联伙伴摩尔比。首先,已经开发了两种简便的正交方法来制备烷基卤化锌:(1)在 DMI 中存在 LiI 的情况下,将锌粉直接插入 1°- 和 2°-烷基卤化物中;(2)早期过渡金属辅助通过单电子转移(SET)过程活化卤代烷。已发现 CrCl2 是一种前所未有的、不可避免的介质,用于从烷基卤化物制备烷基卤化锌,其中 CrCl2 可能用于捕获通过 SET 过程生成的 R·,并将其转移到 Zn(II) 上形成 RZnX。除了常用的 CoPc 外,通过研究还发现了一种新的自由基引发剂 NbCpCl4。其次,利用两种正交方法,开发出三套偶联条件完成一锅酮合成,条件A(Pd2dba3、PR3、Zn、LiI、TESCl、DMI)、条件B(A+CrCl2)和条件
    DOI:
    10.1021/jacs.6b03897
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文献信息

  • Half-sandwich imido complexes of niobium and tantalum
    作者:David N. Williams、Jonathan P. Mitchell、Andrew D. Poole、Ulrich Siemeling、William Clegg、David C. R. Hockless、Paul A. O'Neil、Vernon C. Gibson
    DOI:10.1039/dt9920000739
    日期:——
    [Nb(η-C5R5)Cl4] with NMe(SiMe3)2 in acetonitrile. The sterically hindered alkyl- and aryl-imido analogues [Nb(η-C5H5)(NR)Cl2](R = But1c, or C6H3Pri2-2,6 1d), [Nb(η-C5Me5)(N-C6H3Pri2-2,6)Cl2]1e and the tantalum compound [Ta(η-C5Me5)(N-C6H3Pri2-2,6)Cl2]1f are obtained by treatment of [M(η-C5R5)Cl4] with two equivalents of NHR(SiMe3) in chlorocarbon solvent. Crystal structures of 1a, 1c, 1d and 1f show that these complexes
    半夹心methylimido配合物[铌(η-C 5 - [R 5)(NME)氯2 ](R = H 1a中,或Me 1B)已经被制备治疗[铌(η-C 5 - [R 5)氯4 ]与NMe(SiMe 3)2在乙腈中的溶液。空间位阻的烷基-和芳基-亚氨基类似物[铌(η-C 5 H ^ 5)(NR)氯2 ](R =卜吨1c中,或C 6 H ^ 3镨我2 -2,6 1D),[Nb的(η-C 5我5)(NC6 ħ 3镨我2 -2,6)氯2 ] 1E和钽化合物[TA(η-C 5我5)(NC 6 H ^ 3镨我2 -2,6)氯2 ] 1F是通过处理而得到的[M(η-C 5 - [R 5)氯4 ]与NHR两个当量(森3在氯烃溶剂)。1a, 1c, 1d和1f的晶体结构表明这些配合物是单核的,具有准线性的亚氨基配体。金属-氮键的距离范围为1.744(3)至1.780(5)Å,与伪三键一致。化合物1A - 1E与
  • Niobium η-cyclopentadienyl compounds with imido and amido ligands derived from tert-butylamine
    作者:Martin J. Humphries、Malcolm L. H. Green、Michael A. Leech、Vernon C. Gibson、Matthew Jolly、David N. Williams、Mark R. J. Elsegood、William Clegg
    DOI:10.1039/b006333i
    日期:——
    The niobium η-cyclopentadienyl compounds with imido and amido ligands [Nb(η-C5H5)(NtBu)(NHtBu)Cl] 1,* [Nb(η-C5H5)(NtBu)(NHtBu)nBu] 2, [Nb(η-C5H5)(NtBu)(NHtBu)2] 3, [Nb(η-C5H5)(NtBu)(NHtBu)Me] 4, [Nb(η-C5H5)(η1-C5H5)(NtBu)(NHtBu)] 5, [Nb(η-C5H4)CMe2(η1-C5H4)}(NtBu)(NHtBu)] 6, [Nb(η-C5H5)N(C6H3iPr2-2,6)}(NHtBu)Cl] 7,* [Nb(η-C5H5)N(C6H3iPr2-2,6)}(NHtBu)Me] 8, [Nb(η-C5H5)(NtBu)(NEt2)Cl] 9 and [Nb(η-C5H5)(NtBu)(NHtBu)(NEt2)] 10 have been prepared (* indicates the crystal structure has been determined). A correlation between the chemical shift of the NH proton and the value of Δδ measured between the α and β carbons of the tert-butyl groups of the amido ligands is discussed in relation to the degree of electron donation from the amido ligand to the niobium centre.
    铌η-环戊二烯化合物与亚胺和氨基配体[Nb(η-C5H5)(NtBu)(NHtBu)Cl] 1,* [Nb(η-C5H5)(NtBu)(NHtBu)nBu] 2, [Nb(η-C5H5)(NtBu)(NHtBu)2] 3, [Nb(η-C5H5)(NtBu)(NHtBu)Me] 4, [Nb(η-C5H5)(η1-C5H5)(NtBu)(NHtBu)] 5, [Nb(η-C5H4)CMe2(η1-C5H4)}(NtBu)(NHtBu)] 6, [Nb(η-C5H5)N(C6H3iPr2-2,6)}(NHtBu)Cl] 7,* [Nb(η-C5H5)N(C6H3iPr2-2,6)}(NHtBu)Me] 8, [Nb(η-C5H5)(NtBu)(NEt2)Cl] 9 和 [Nb(η-C5H5)(NtBu)(NHtBu)(NEt2)] 10 已被制备(*表示晶体结构已确定)。关于氨基配体向铌中心提供电子的程度,讨论了氨基配体叔丁基的α和β碳之间测得的Δδ值与NH质子的化学位移之间的相关性。
  • Syntheses, Structures, and Reactivities of Heterobimetallic Bridging Dinitrogen Complexes Containing Group 6 and Group 4 or 5 Transition Metals<sup>1</sup>
    作者:Hiroshige Ishino、Tatsuya Nagano、Shigeki Kuwata、Youhei Yokobayashi、Youichi Ishii、Masanobu Hidai、Yasushi Mizobe
    DOI:10.1021/om000684j
    日期:2001.1.1
    heterobimetallic dinitrogen complexes containing group 6 and group 4 or 5 transition metals were synthesized by the reaction of the tungsten or molybdenum dinitrogen complexes cis-[W(N2)2(PMe2Ph)4] (1) and trans-[M(N2)2(dppe)2] (2) (M = W, Mo) with group 4 or group 5 compounds such as [CpTiCl3], [Cp2M‘Cl2] (M‘ = Ti, Zr, Hf), or [CpM‘Cl4] (Cp‘ = Cp, Cp*; M‘ = Nb, Ta). Crystallographic studies of the complexes thus
    通过钨或钼二氮配合物顺式-[W(N 2)2(PMe 2 Ph)4 ](1)和反式- [M(N 2)2(dppe)2 ](2)(M = W,Mo)与第4组或第5组化合物,例如[CpTiCl 3 ],[Cp 2 M'Cl 2 ](M'= Ti, Zr,Hf)或[Cp'M'Cl 4 ](Cp'= Cp,Cp *; M'= Nb,Ta)。如此获得的复合物的晶体学研究,包括[WCl(PMe2 PH)4(μ-N 2)TiCpCl 2 ]和[WCL(PME 2 PH)4(μ-N 2)NbCpCl 3 ]显示,M-N-N-M”芯基本上是线性的,并且所述N个-N键被认为是为具有2.几个μ-N正规键级2种配合物的配体的甲基在该基团也通过二氮络合物的反应得到4或5族金属中心1和2a中(M = W)与所述甲基络合物[Cp 2 ZrMeCl],[TaMe 3 Cl 2 ]和[NbMe 2 Cl 3 ]。络合物[WCl(dppe)的反应2(μ-N
  • Synthesis and structures of monocyclopentadienylniobium complexes with bi- and tri-dentate dithiolate ligandsElectronic supplementary information (ESI) available: NMR data for compounds 1 and 2 in d8-toluene; cyclic voltammogram of compound 1; ESR spectrum of reduced compound 1. See http://www.rsc.org/suppdata/dt/b2/b209823g/
    作者:Roland K. Dersch、Henrik Jungclas、W. Edward Lindsell、Georgina M. Rosair
    DOI:10.1039/b209823g
    日期:2003.12.20
    established by XRD. Compound 1 is five-coordinate, with a distorted four-legged piano-stool geometry, compound 3 is six-coordinate with tridentate thiolate and cis-equatorial Cl ligands, compound 5 is also six-coordinate but with trans-equatorial Cl ligands, and compound 6 is five-coordinate, approximating to a trigonal bipyramidal geometry with an equatorial oxo ligand. Compounds 1 and 2 are fluxional
    的反应 环戊二烯基 和 甲基环戊二烯基-四氯铌 和 1,3-丙二硫late(I)产率的化合物[国家预防腐败局X(1,3-S 2 C ^ 3 ħ 6)2 ] [ 1中,Cp X =η-C 5 H ^ 5 (CP); 2中,Cp X =η-C 5 H ^ 4我(CP')]; of(I)衍生物的类似反应2,2'-硫代二乙硫醇得到[NbCp × Cl 2 (SC 2 H 4)2 S}](3,Cp x = Cp;4,Cp x = Cp′)。[NbCp'Cl 4 ]与NbCp'Cl 4的反应2(I)2,2'-氧二乙硫醇盐产生[NbCp'Cl 2 (SC 2 H 4)2 O}] 5和[NbCp'O (SC 2 H 4)2 O}] 6。产品经过分析和表征核磁共振光谱; 的固态结构1,3,5和6已被建立X射线衍射。化合物1为五坐标,四脚钢琴凳变形,化合物3为六坐标,三齿硫醇盐和顺赤道Cl配体,化合物5
  • Synthesis and characterisation of monocyclopentadienyl dithiolato complexes of niobium and tantalum; crystal structures of [Nb2(μ-O)(μ-η2∶η2-S2C2H4)(η5-C5H4Me)2Cl4] and [Nb2(μ-η1∶η2-S2C2H4)2(η5-C5H4Me)2O(S2C2H4)] †
    作者:W. Edward Lindsell、Georgina M. Rosair、Malcolm A. Spence
    DOI:10.1039/a804808h
    日期:——
    Reactions of tetrachloro(cyclopentadienyl)niobium with arenedithiolates yielded products [NbCp(1,2-S2C6H3R-4)2] (Cp = η5-C5H5; R = H 1 or Me 2), characterised primarily by analysis, 1H NMR and mass spectroscopy. Cyclic voltammetric studies on 1 and 2 showed two consecutive, quasi-reversible, reduction processes; ESR spectra of the initial products of chemical reduction were typical of those from niobium(IV) species with an unpaired electron largely centred on the metal and assigned to the anions [NbCp(1,2-S2C6H3R-4)2]–. Similar tantalum derivatives were less tractable, although properties of the more soluble species [TaCp′(1,2-S2C6H4)2] (Cp′ = η5-C5H4Me) are reported. Reactions of tetrachloro(methylcyclopentadienyl)-niobium or -tantalum with salts of ethane-1,2-dithiol (H2edt) were very susceptible to hydrolysis and the major isolable products of reactions using the sodium reagent (Na2edt) were [M2(µ-O)(µ-η2∶η2-edt)Cp′2Cl4] (M = Nb 4 or Ta 5), containing oxo and symmetrical dithiolate bridges. Reaction of [NbCp′Cl4] with 2 molar equivalents of Tl2edt formed the unsymmetrical compound [Nb2(µ-η1∶η2-edt)2Cp′2O(edt)] 6, containing a terminal oxide ligand, one chelating and two unsymmetrically bridging edt groups. Structures of compounds 4 and 6 have been determined in the solid state by X-ray crystallography; 1- and 2-D NMR spectra of the binuclear products support the retention of these structures in solution.
    四氯化(环戊二烯基)铌与芳基二硫醇的反应产物为[NbCp(1,2-S2C6H3R-4)2](Cp = η5-C5H5; R = H 1 或 Me 2),主要通过分析、1H NMR 和质谱进行表征。对 1 和 2 进行的循环伏安研究显示了两个连续的、准可逆的还原过程;化学还原的初始产物的 ESR 光谱具有典型的铌(IV)物种特征,其中未成对电子主要集中在金属中心,并被指认为阴离子[NbCp(1,2-S2C6H3R-4)2]-。类似的钽衍生物较为难以处理,尽管报道了更易溶的物种[TaCp′(1,2-S2C6H4)2](Cp′ = η5-C5H4Me)的性质。四氯化(甲基环戊二烯基)铌或钽与乙烷-1,2-二硫醇(H2edt)盐的反应非常容易水解,主要可分离产物为使用了钠试剂(Na2edt)反应得到的[M2(μ-O)(μ-η2∷η2-edt)Cp′2Cl4](M = Nb 4 或 Ta 5),含有氧桥和二硫醇对称桥。[NbCp′Cl4]与2摩尔当量的Tl2edt反应形成了不对称化合物[Nb2(μ-η1∷η2-edt)2Cp′2O(edt)] 6,含有端氧配体、一个螯合和一个二硫醇不对称桥。化合物4和6的固体结构通过X射线晶体学确定;二核产物的1-D和2-D NMR光谱支持溶液中这些结构的保留。
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