First amido-functionalized niobium and tantalum complexes of the ansa-structural type: Synthesis and photochemical Si-N bond cleavage

Wolfgang A. Herrmann; Walter Baratta

doi:10.1016/0022-328X(95)05929-J

First amido-functionalized niobium and tantalum complexes of the ansa-structural type: Synthesis and photochemical Si-N bond cleavage

Wolfgang A. Herrmann
, Walter Baratta

Technical University of Munich

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

Niobium(V) and tantalum(V) amides [(η⁵-C₅H₄)-Si(CH₃)₂-NR]M[N(CH₃)₂]₃ (R = C₆H₅) containing chelate-type C, N-Ligands are available in 45% (M = Nb) and 60% (M = Ta) isolated yield, respectively, from the homoleptic amides M[N(CH₃)₂]₅ and the N-functionalized cyclopentadiene C₅H₅-Si(CH₃)₂-NHR by double amine elimination. The niobium and tantalum derivatives undergo an unprecedented photo-induced rearrangement at room temperature, yielding the imido complexes [(η⁵-C₅H₄)-Si(CH₃)₂-N(CH₃)₂]M( = NR)[N(CH₃)₂]₂ as a result of Si-N bond cleavage.

Original language	English
Pages (from-to)	357-361
Number of pages	5
Journal	Journal of Organometallic Chemistry
Volume	506
Issue number	1-2
DOIs	https://doi.org/10.1016/0022-328X(95)05929-J
State	Published - 1996

Keywords

Amide
Amino-functionalized cyclopentadienyl
Niobium
Rearrangement
Si-N Bond cleavage
Tantalum

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10.1016/0022-328X(95)05929-J

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@article{43bd5bc0d0b843698642952367edbe70,

title = "First amido-functionalized niobium and tantalum complexes of the ansa-structural type: Synthesis and photochemical Si-N bond cleavage",

abstract = "Niobium(V) and tantalum(V) amides [(η5-C5H4)-Si(CH3)2-NR]M[N(CH3)2]3 (R = C6H5) containing chelate-type C, N-Ligands are available in 45\% (M = Nb) and 60\% (M = Ta) isolated yield, respectively, from the homoleptic amides M[N(CH3)2]5 and the N-functionalized cyclopentadiene C5H5-Si(CH3)2-NHR by double amine elimination. The niobium and tantalum derivatives undergo an unprecedented photo-induced rearrangement at room temperature, yielding the imido complexes [(η5-C5H4)-Si(CH3)2-N(CH3)2]M( = NR)[N(CH3)2]2 as a result of Si-N bond cleavage.",

keywords = "Amide, Amino-functionalized cyclopentadienyl, Niobium, Rearrangement, Si-N Bond cleavage, Tantalum",

author = "Herrmann, \{Wolfgang A.\} and Walter Baratta",

year = "1996",

doi = "10.1016/0022-328X(95)05929-J",

language = "English",

volume = "506",

pages = "357--361",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - First amido-functionalized niobium and tantalum complexes of the ansa-structural type

T2 - Synthesis and photochemical Si-N bond cleavage

AU - Herrmann, Wolfgang A.

AU - Baratta, Walter

PY - 1996

Y1 - 1996

N2 - Niobium(V) and tantalum(V) amides [(η5-C5H4)-Si(CH3)2-NR]M[N(CH3)2]3 (R = C6H5) containing chelate-type C, N-Ligands are available in 45% (M = Nb) and 60% (M = Ta) isolated yield, respectively, from the homoleptic amides M[N(CH3)2]5 and the N-functionalized cyclopentadiene C5H5-Si(CH3)2-NHR by double amine elimination. The niobium and tantalum derivatives undergo an unprecedented photo-induced rearrangement at room temperature, yielding the imido complexes [(η5-C5H4)-Si(CH3)2-N(CH3)2]M( = NR)[N(CH3)2]2 as a result of Si-N bond cleavage.

AB - Niobium(V) and tantalum(V) amides [(η5-C5H4)-Si(CH3)2-NR]M[N(CH3)2]3 (R = C6H5) containing chelate-type C, N-Ligands are available in 45% (M = Nb) and 60% (M = Ta) isolated yield, respectively, from the homoleptic amides M[N(CH3)2]5 and the N-functionalized cyclopentadiene C5H5-Si(CH3)2-NHR by double amine elimination. The niobium and tantalum derivatives undergo an unprecedented photo-induced rearrangement at room temperature, yielding the imido complexes [(η5-C5H4)-Si(CH3)2-N(CH3)2]M( = NR)[N(CH3)2]2 as a result of Si-N bond cleavage.

KW - Amide

KW - Amino-functionalized cyclopentadienyl

KW - Niobium

KW - Rearrangement

KW - Si-N Bond cleavage

KW - Tantalum

UR - https://www.scopus.com/pages/publications/0030525287

U2 - 10.1016/0022-328X(95)05929-J

DO - 10.1016/0022-328X(95)05929-J

M3 - Article

AN - SCOPUS:0030525287

SN - 0022-328X

VL - 506

SP - 357

EP - 361

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 1-2

ER -

First amido-functionalized niobium and tantalum complexes of the ansa-structural type: Synthesis and photochemical Si-N bond cleavage

Abstract

Keywords

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