Synthesis and characterization of niobium(IV) and tantalum(V) guanidinates and benzamidinates -: Molecular structure of the first Nb(IV) guanidinate NbCl2{CyNC(N(SiMe3)2)NCy}2

被引：22
|
作者：
Decams, JM
Hubert-Pfalzgraf, LG
Vaissermann, J
机构：
[1] Univ Lyon 1, ESA CNRS 5079, F-69622 Villeurbanne, France
[2] URA CNRS, Chim Met Transit Lab, F-75230 Paris, France
来源：
POLYHEDRON | 1999年 / 18卷 / 22期
关键词：
niobium; tantalum; benzamidinates; guanidinates;
D O I：
10.1016/S0277-5387(99)00190-4
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The reactions between niobium pentachloride or NbCl4(THF)(2) and [(Et2N)(2)TaCl3](2) with various lithium guanidinates or benzamidinates were investigated. [NbCl2{RNCR'NR}(2)] [R=Cy (Cyclohexyl), R'=N(SiMe3)(2) (1); R=SiMe3, R'=p-tolyl (2)] [TaCl3{Me3SiNC(p-tolyl)NSiMe2}(3)] (3) and [(Et2N)(2)TaCl2{RNCR'NR}] [R=SiMe3, R'=p-tolyl (4) and R=Cy, R'=N(SiMe3)(2) (5)] were isolated and characterized by elemental analyses, FT-IR and H-1 NMR or ESR spectroscopy. The molecular structure of 1 corresponds to a centrosymmetric, monomeric [NbCl2{CyNC(N(SiMe3)(2))NCy}(2)] species as established by X-ray diffraction studies with the chloride ligands in trans positions. The guanidinate ligand displays a symmetrical sigma,sigma'-coordination behaviour (Nb-N 2.161(8) Angstrom av.) (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：2885 / 2890
页数：6
相关论文
共 50 条
  • [41] Synthesis and characterization of diorganotin(IV) complexes of tridentate Schiff bases: crystal structure of [N-(3-hydroxypyridine-2-yl)-5-chlorosalicylideneiminato]dimethyltin(IV)
    Nilgün Ancın
    Selma Gül Öztaş
    Semra İde
    [J]. Structural Chemistry, 2007, 18 : 667 - 675
  • [42] Diorganotin(IV) complexes of 3,5-dichloro-2-hydroxybenzaldehyde-N(4)- ethylthiosemicarbazone: Synthesis, spectral characterization and crystal structure
    Salam, M. A.
    Haque, Rosenani A.
    [J]. INORGANICA CHIMICA ACTA, 2015, 435 : 103 - 108
  • [43] Synthesis and characterization of complexes of Te(IV) with sulfur and selenium containing ligands:: Crystal and molecular structure of trichloro(4-methoxyphenyl)tellurium(IV)•N-methylbenzothlazole-2-(3H)-thione
    O'Quinn, GK
    Rudd, MD
    Kautz, JA
    [J]. PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS, 2002, 177 (04) : 853 - 862
  • [44] SUBVALENT GROUP-14 METAL-COMPOUNDS .16. SYNTHESIS, CRYSTAL-STRUCTURE AND CHARACTERIZATION OF SOME BETA-FUNCTIONALIZED-ALKYLTIN(II) COMPLEXES, SNR(X) (R = C5H4N[C(SIME3)2], X = R, CL OR N(SIME3)2)
    JOLLY, BS
    LAPPERT, MF
    ENGELHARDT, LM
    WHITE, AH
    RASTON, CL
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1993, (17): : 2653 - 2663
  • [45] Synthesis and characterization of tin(IV)/organotin(IV) complexes with 2-benzoylpyridine-N(4)-cyclohexylthiosemicarbazone [HBPCT]: X-ray crystal structure of [SnCl3(BPCT)]
    Salam, M. A.
    Affan, M. A.
    Ahmad, Fasihuddin B.
    Hitam, Ramli B.
    Gal, Zoltan
    Oliver, Presly
    [J]. JOURNAL OF COORDINATION CHEMISTRY, 2011, 64 (14) : 2409 - 2418
  • [46] A titanium(IV) dimer complex containing tris(2-mercaptophenolato)titanium(IV) fragments linked by sodium ions. Synthesis, structure and characterization of (Et4N)(2)[Ti(mp)(3)Na(MeOH)(2)](2) (H(2)mp = 2-mercaptophenol)
    Wen, TB
    Wu, DX
    Shi, JC
    Chen, CN
    Liu, QT
    Kang, BS
    [J]. JOURNAL OF COORDINATION CHEMISTRY, 1997, 42 (1-2) : 11 - 23
  • [47] Synthesis, structure and magnetic characterization of a vanadium(IV) phosphite, [C2N2H10]• [(VO)3(H2O)(HPO3)4]•H2O
    Zhang, D
    Yue, HJ
    Shi, Z
    Guo, M
    Feng, SH
    [J]. MICROPOROUS AND MESOPOROUS MATERIALS, 2005, 82 (1-2) : 209 - 213
  • [48] Synthesis, characterization and X-ray structure of polymeric [triphenyltin(IV)][aquatriphenyltin(IV)] sulphate, [(Ph3Sn)(H2OSnPh3)SO4]n
    Diop, CAK
    Diop, L
    Toscano, AR
    [J]. MAIN GROUP METAL CHEMISTRY, 2002, 25 (05): : 327 - +
  • [49] Synthesis and characterization of tantalum(V) complexes containing bis-sulfamide ligands:: X-ray crystal structure of Ta[N(Me)2]3[SO2(NCMe3)2]
    Mills, RC
    Doufou, P
    Abboud, KA
    Boncella, JM
    [J]. POLYHEDRON, 2002, 21 (11) : 1051 - 1055
  • [50] New azido complexes of tantalum(V).: Synthesis and molecular structure of the dinuclear compounds [Cp*TaCl(N3)(μ-N3)]2(μ-O) and [Cp*Ta(N3)3(μ-N3)]2 (Cp* = pentamethylcyclopentadienyl)
    Herberhold, M
    Goller, A
    Milius, W
    [J]. ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 2001, 627 (05): : 891 - 895
12345