Organometallic rhodium (I) complexes with 1-alkylaminopyrazole ligands

Glòria Esquius; Josefina Pons; Ramón Yáñez; Josep Ros

doi:10.1016/S0022-328X(00)00662-8

Organometallic rhodium (I) complexes with 1-alkylaminopyrazole ligands

Glòria Esquius, Josefina Pons, Ramón Yáñez, Josep Ros

Department of Chemistry

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

57 Citations (Scopus)

Abstract

New bidentate NN′ and tridentate NN′N 1-alkylaminopyrazoles were synthesized and characterized by elemental analyses and spectroscopic methods. The reaction of [RhCl(cod)2] (cod=cycloocta-1,5-diene) with one equivalent of L 1-alkylaminopyrazoles afforded Rh2Cl2(L)(cod)2 complexes (L=NN′ and NN′N). These rhodium (I) compounds were studied by IR, 1H- and 13C-NMR and liquid mass (with electrospray and APCI interfaces) spectrometries. The 1H-NMR spectra and molar conductances of these complexes suggested the presence of 1:1 electrolyte species, [Rh(L)cod]+ [RhCl2(cod)]-, in solution. A combined electrospray and APCI liquid mass spectroscopy study confirmed the presence of both [Rh(L)cod]+ and [RhCl2(cod)]- species in solution but the existence of a neutral molecular form of complexes in solution could not be demonstrated. © 2001 Elsevier Science B.V.

Original language	English
Pages (from-to)	14-23
Journal	Journal of Organometallic Chemistry
Volume	619
Issue number	1-2
DOIs	https://doi.org/10.1016/S0022-328X(00)00662-8
Publication status	Published - 30 Jan 2001

Keywords

1-Alkylaminopyrazoles
Electrospray mass spectra
Rhodium complexes
Rhodium-amine complexes

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title = "Organometallic rhodium (I) complexes with 1-alkylaminopyrazole ligands",

abstract = "New bidentate NN′ and tridentate NN′N 1-alkylaminopyrazoles were synthesized and characterized by elemental analyses and spectroscopic methods. The reaction of [RhCl(cod)2] (cod=cycloocta-1,5-diene) with one equivalent of L 1-alkylaminopyrazoles afforded Rh2Cl2(L)(cod)2 complexes (L=NN′ and NN′N). These rhodium (I) compounds were studied by IR, 1H- and 13C-NMR and liquid mass (with electrospray and APCI interfaces) spectrometries. The 1H-NMR spectra and molar conductances of these complexes suggested the presence of 1:1 electrolyte species, [Rh(L)cod]+ [RhCl2(cod)]-, in solution. A combined electrospray and APCI liquid mass spectroscopy study confirmed the presence of both [Rh(L)cod]+ and [RhCl2(cod)]- species in solution but the existence of a neutral molecular form of complexes in solution could not be demonstrated. {\textcopyright} 2001 Elsevier Science B.V.",

keywords = "1-Alkylaminopyrazoles, Electrospray mass spectra, Rhodium complexes, Rhodium-amine complexes",

author = "Gl{\`o}ria Esquius and Josefina Pons and Ram{\'o}n Y{\'a}{\~n}ez and Josep Ros",

year = "2001",

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doi = "10.1016/S0022-328X(00)00662-8",

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TY - JOUR

T1 - Organometallic rhodium (I) complexes with 1-alkylaminopyrazole ligands

AU - Esquius, Glòria

AU - Pons, Josefina

AU - Yáñez, Ramón

AU - Ros, Josep

PY - 2001/1/30

Y1 - 2001/1/30

N2 - New bidentate NN′ and tridentate NN′N 1-alkylaminopyrazoles were synthesized and characterized by elemental analyses and spectroscopic methods. The reaction of [RhCl(cod)2] (cod=cycloocta-1,5-diene) with one equivalent of L 1-alkylaminopyrazoles afforded Rh2Cl2(L)(cod)2 complexes (L=NN′ and NN′N). These rhodium (I) compounds were studied by IR, 1H- and 13C-NMR and liquid mass (with electrospray and APCI interfaces) spectrometries. The 1H-NMR spectra and molar conductances of these complexes suggested the presence of 1:1 electrolyte species, [Rh(L)cod]+ [RhCl2(cod)]-, in solution. A combined electrospray and APCI liquid mass spectroscopy study confirmed the presence of both [Rh(L)cod]+ and [RhCl2(cod)]- species in solution but the existence of a neutral molecular form of complexes in solution could not be demonstrated. © 2001 Elsevier Science B.V.

AB - New bidentate NN′ and tridentate NN′N 1-alkylaminopyrazoles were synthesized and characterized by elemental analyses and spectroscopic methods. The reaction of [RhCl(cod)2] (cod=cycloocta-1,5-diene) with one equivalent of L 1-alkylaminopyrazoles afforded Rh2Cl2(L)(cod)2 complexes (L=NN′ and NN′N). These rhodium (I) compounds were studied by IR, 1H- and 13C-NMR and liquid mass (with electrospray and APCI interfaces) spectrometries. The 1H-NMR spectra and molar conductances of these complexes suggested the presence of 1:1 electrolyte species, [Rh(L)cod]+ [RhCl2(cod)]-, in solution. A combined electrospray and APCI liquid mass spectroscopy study confirmed the presence of both [Rh(L)cod]+ and [RhCl2(cod)]- species in solution but the existence of a neutral molecular form of complexes in solution could not be demonstrated. © 2001 Elsevier Science B.V.

KW - 1-Alkylaminopyrazoles

KW - Electrospray mass spectra

KW - Rhodium complexes

KW - Rhodium-amine complexes

U2 - 10.1016/S0022-328X(00)00662-8

DO - 10.1016/S0022-328X(00)00662-8

M3 - Article

VL - 619

SP - 14

EP - 23

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