Diamidophosphine complexes of niobium(III) and (IV): imide formation via ancillary ligand decomposition

M D  Fryzuk; M P  Shaver; B O  Patrick

doi:10.1016/S0020-1693(02)01499-8

Diamidophosphine complexes of niobium(III) and (IV): imide formation via ancillary ligand decomposition

M D Fryzuk, M P Shaver, B O Patrick

School of Chemistry

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

Abstract

The diamidophosphine complexes of niobium (CyPh)[NPN]NbCl(DME) (2), (CyPh)[NPN]NbCl2 (6), and (PhPh)[NPN]NbCl2 (9), where (RR')[NPN]=RP(CH2SiMe2NR')(2) have been prepared, isolated and characterized. Generation of (RR')[NPN]NbCl(DME) species competes with the production of ((RR')[NPN]NbCl)(2)(mu-N-2) and can be controlled with N-2 pressure. (CyPh)[NPN]NbCl2 spontaneously decomposes into (CyPh)[NPN]NbCl(=NPh) (7), CyP(CH2SiMe2)(2)NPh (8), and a paramagnetic impurity. Compound 7 was characterized by an X-ray diffraction study and its structural features are discussed. The Nb-N-imido bond length is 1.789(2) Angstrom with a Nb-N-imido-C bond angle of 167.9(2)degrees in a distorted square pyramidal structure. Reduction of (PhPh)[NPN]NbCl2 (9), with KC8 produced (PhPh)[NPN]NbCl(=NPh), PhP(CH2SiMe2)(2)NPh, and a paramagnetic impurity. (C) 2002 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	293-298
Number of pages	6
Journal	Inorganica Chimica Acta
Volume	350
DOIs	https://doi.org/10.1016/S0020-1693(02)01499-8
Publication status	Published - 4 Jul 2003

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@article{88039057ec8546d1b8272dd4f0d27fc9,

title = "Diamidophosphine complexes of niobium(III) and (IV): imide formation via ancillary ligand decomposition",

abstract = "The diamidophosphine complexes of niobium (CyPh)[NPN]NbCl(DME) (2), (CyPh)[NPN]NbCl2 (6), and (PhPh)[NPN]NbCl2 (9), where (RR')[NPN]=RP(CH2SiMe2NR')(2) have been prepared, isolated and characterized. Generation of (RR')[NPN]NbCl(DME) species competes with the production of ((RR')[NPN]NbCl)(2)(mu-N-2) and can be controlled with N-2 pressure. (CyPh)[NPN]NbCl2 spontaneously decomposes into (CyPh)[NPN]NbCl(=NPh) (7), CyP(CH2SiMe2)(2)NPh (8), and a paramagnetic impurity. Compound 7 was characterized by an X-ray diffraction study and its structural features are discussed. The Nb-N-imido bond length is 1.789(2) Angstrom with a Nb-N-imido-C bond angle of 167.9(2)degrees in a distorted square pyramidal structure. Reduction of (PhPh)[NPN]NbCl2 (9), with KC8 produced (PhPh)[NPN]NbCl(=NPh), PhP(CH2SiMe2)(2)NPh, and a paramagnetic impurity. (C) 2002 Elsevier Science B.V. All rights reserved.",

author = "Fryzuk, \{M D\} and Shaver, \{M P\} and Patrick, \{B O\}",

year = "2003",

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doi = "10.1016/S0020-1693(02)01499-8",

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TY - JOUR

T1 - Diamidophosphine complexes of niobium(III) and (IV): imide formation via ancillary ligand decomposition

AU - Fryzuk, M D

AU - Shaver, M P

AU - Patrick, B O

PY - 2003/7/4

Y1 - 2003/7/4

N2 - The diamidophosphine complexes of niobium (CyPh)[NPN]NbCl(DME) (2), (CyPh)[NPN]NbCl2 (6), and (PhPh)[NPN]NbCl2 (9), where (RR')[NPN]=RP(CH2SiMe2NR')(2) have been prepared, isolated and characterized. Generation of (RR')[NPN]NbCl(DME) species competes with the production of ((RR')[NPN]NbCl)(2)(mu-N-2) and can be controlled with N-2 pressure. (CyPh)[NPN]NbCl2 spontaneously decomposes into (CyPh)[NPN]NbCl(=NPh) (7), CyP(CH2SiMe2)(2)NPh (8), and a paramagnetic impurity. Compound 7 was characterized by an X-ray diffraction study and its structural features are discussed. The Nb-N-imido bond length is 1.789(2) Angstrom with a Nb-N-imido-C bond angle of 167.9(2)degrees in a distorted square pyramidal structure. Reduction of (PhPh)[NPN]NbCl2 (9), with KC8 produced (PhPh)[NPN]NbCl(=NPh), PhP(CH2SiMe2)(2)NPh, and a paramagnetic impurity. (C) 2002 Elsevier Science B.V. All rights reserved.

AB - The diamidophosphine complexes of niobium (CyPh)[NPN]NbCl(DME) (2), (CyPh)[NPN]NbCl2 (6), and (PhPh)[NPN]NbCl2 (9), where (RR')[NPN]=RP(CH2SiMe2NR')(2) have been prepared, isolated and characterized. Generation of (RR')[NPN]NbCl(DME) species competes with the production of ((RR')[NPN]NbCl)(2)(mu-N-2) and can be controlled with N-2 pressure. (CyPh)[NPN]NbCl2 spontaneously decomposes into (CyPh)[NPN]NbCl(=NPh) (7), CyP(CH2SiMe2)(2)NPh (8), and a paramagnetic impurity. Compound 7 was characterized by an X-ray diffraction study and its structural features are discussed. The Nb-N-imido bond length is 1.789(2) Angstrom with a Nb-N-imido-C bond angle of 167.9(2)degrees in a distorted square pyramidal structure. Reduction of (PhPh)[NPN]NbCl2 (9), with KC8 produced (PhPh)[NPN]NbCl(=NPh), PhP(CH2SiMe2)(2)NPh, and a paramagnetic impurity. (C) 2002 Elsevier Science B.V. All rights reserved.

U2 - 10.1016/S0020-1693(02)01499-8

DO - 10.1016/S0020-1693(02)01499-8

M3 - Article

SN - 0020-1693

VL - 350

SP - 293

EP - 298

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

ER -

Diamidophosphine complexes of niobium(III) and (IV): imide formation via ancillary ligand decomposition

Abstract

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