Bridged half-sandwich niobiocenes by intramolecular CH activation

Laurent Djakovitch; Wolfgang A. Herrmann

doi:10.1016/S0022-328X(97)00252-0

Bridged half-sandwich niobiocenes by intramolecular CH activation

Laurent Djakovitch
, Wolfgang A. Herrmann

Anorgan.-Chemisches Inst. der T.

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

12 Scopus citations

Abstract

The reaction of [Nb(NMe₂)₃(=N-2,6-iPr₂C₆H₃)] 3 with the cyclopentadienes C₅H₅R (R = C₃H₅, C₆H₅, CH₂C₆H₅) 2a-c gave the new half-sandwich niobium complexes [Nb(η⁵-C₅H₄R)(NMe₂)₂(=N-2,6-iPr₂C₆H₃)] 4a-c in high yields. The new ansa-type half-sandwich complexes [Nb(NMe₂)(=N(2,6)i-PrC₆H₃)(η⁵:η³-{C₅H₄}C(CH₃)₂{C₃H₄}] 5a, [Nb(NMe₂)(=N(2,6)i-PrC₆H₃)(η⁵:η¹ {C₅H₄}C(CH₃)₂{C₆H₄}] 5b, [Nb(NMe₂)(=N(2,6)i-PrC₆H₃)(η⁵:η³-{C₅H₄}C(CH₃)₂{CHC₆H₅}] 5c were thus obtained at higher temperatures by an intramolecular C-H activation resulting in the coordination of the R group.

Original language	English
Pages (from-to)	399-405
Number of pages	7
Journal	Journal of Organometallic Chemistry
Volume	545-546
DOIs	https://doi.org/10.1016/S0022-328X(97)00252-0
State	Published - 30 Oct 1997
Externally published	Yes

Keywords

Amido complexes
CH activation
Imido complexes
Niobium

Access to Document

10.1016/S0022-328X(97)00252-0

Cite this

@article{f854c444d7b14507a973399383a596f0,

title = "Bridged half-sandwich niobiocenes by intramolecular CH activation",

abstract = "The reaction of [Nb(NMe2)3(=N-2,6-iPr2C6H3)] 3 with the cyclopentadienes C5H5R (R = C3H5, C6H5, CH2C6H5) 2a-c gave the new half-sandwich niobium complexes [Nb(η5-C5H4R)(NMe2)2(=N-2,6-iPr2C6H3)] 4a-c in high yields. The new ansa-type half-sandwich complexes [Nb(NMe2)(=N(2,6)i-PrC6H3)(η5:η3-\{C5H4\}C(CH3)2\{C3H4\}] 5a, [Nb(NMe2)(=N(2,6)i-PrC6H3)(η5:η1 \{C5H4\}C(CH3)2\{C6H4\}] 5b, [Nb(NMe2)(=N(2,6)i-PrC6H3)(η5:η3-\{C5H4\}C(CH3)2\{CHC6H5\}] 5c were thus obtained at higher temperatures by an intramolecular C-H activation resulting in the coordination of the R group.",

keywords = "Amido complexes, CH activation, Imido complexes, Niobium",

author = "Laurent Djakovitch and Herrmann, \{Wolfgang A.\}",

year = "1997",

month = oct,

day = "30",

doi = "10.1016/S0022-328X(97)00252-0",

language = "English",

volume = "545-546",

pages = "399--405",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Bridged half-sandwich niobiocenes by intramolecular CH activation

AU - Djakovitch, Laurent

AU - Herrmann, Wolfgang A.

PY - 1997/10/30

Y1 - 1997/10/30

N2 - The reaction of [Nb(NMe2)3(=N-2,6-iPr2C6H3)] 3 with the cyclopentadienes C5H5R (R = C3H5, C6H5, CH2C6H5) 2a-c gave the new half-sandwich niobium complexes [Nb(η5-C5H4R)(NMe2)2(=N-2,6-iPr2C6H3)] 4a-c in high yields. The new ansa-type half-sandwich complexes [Nb(NMe2)(=N(2,6)i-PrC6H3)(η5:η3-{C5H4}C(CH3)2{C3H4}] 5a, [Nb(NMe2)(=N(2,6)i-PrC6H3)(η5:η1 {C5H4}C(CH3)2{C6H4}] 5b, [Nb(NMe2)(=N(2,6)i-PrC6H3)(η5:η3-{C5H4}C(CH3)2{CHC6H5}] 5c were thus obtained at higher temperatures by an intramolecular C-H activation resulting in the coordination of the R group.

AB - The reaction of [Nb(NMe2)3(=N-2,6-iPr2C6H3)] 3 with the cyclopentadienes C5H5R (R = C3H5, C6H5, CH2C6H5) 2a-c gave the new half-sandwich niobium complexes [Nb(η5-C5H4R)(NMe2)2(=N-2,6-iPr2C6H3)] 4a-c in high yields. The new ansa-type half-sandwich complexes [Nb(NMe2)(=N(2,6)i-PrC6H3)(η5:η3-{C5H4}C(CH3)2{C3H4}] 5a, [Nb(NMe2)(=N(2,6)i-PrC6H3)(η5:η1 {C5H4}C(CH3)2{C6H4}] 5b, [Nb(NMe2)(=N(2,6)i-PrC6H3)(η5:η3-{C5H4}C(CH3)2{CHC6H5}] 5c were thus obtained at higher temperatures by an intramolecular C-H activation resulting in the coordination of the R group.

KW - Amido complexes

KW - CH activation

KW - Imido complexes

KW - Niobium

UR - https://www.scopus.com/pages/publications/0031592082

U2 - 10.1016/S0022-328X(97)00252-0

DO - 10.1016/S0022-328X(97)00252-0

M3 - Article

AN - SCOPUS:0031592082

SN - 0022-328X

VL - 545-546

SP - 399

EP - 405

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

ER -

Bridged half-sandwich niobiocenes by intramolecular CH activation

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this