All-nitrogen coordinated amidinato/imido complexes of molybdenum and tungsten: Syntheses and characterization

Vanessa Gwildies; Tobias B. Thiede; Saeed Amirjalayer; Louay Alsamman; Anjana Devi; Roland A. Fischer

doi:10.1021/ic101060s

All-nitrogen coordinated amidinato/imido complexes of molybdenum and tungsten: Syntheses and characterization

Vanessa Gwildies, Tobias B. Thiede, Saeed Amirjalayer, Louay Alsamman, Anjana Devi, Roland A. Fischer

Max-Planck-lnstitut für Kohlenforschung

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

28 Scopus citations

Abstract

The first all-nitrogen coordinated bis(alkylamidinato)/bis(alkylimido) complexes of molybdenum and tungsten, [Mo(NtBu)₂{(iPrN) ₂CMe}₂]and [W(NtBu)₂{(iPrN)₂CMe} ₂], have been synthesized and fully characterized by ¹H and ¹³C NMR spectroscopy, elemental analyses, high-resolution electron impact mass spectrometry, and Fourier transform infrared spectroscopy. Density functional theory calculations of the tungsten complex allow for geometry optimization and structural characterization by assignment of the NMR data, in particular a comparison of the experimental ¹³C NMR signals with the calculated ones. Both compounds sublime without decomposition at 130 °C and 1 mTorr and show rapid decomposition above 250 °C, hence representing promising vapor-phase deposition routes for metal nitride based thin-film materials.

Original language	English
Pages (from-to)	8487-8494
Number of pages	8
Journal	Inorganic Chemistry
Volume	49
Issue number	18
DOIs	https://doi.org/10.1021/ic101060s
State	Published - 20 Sep 2010
Externally published	Yes

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title = "All-nitrogen coordinated amidinato/imido complexes of molybdenum and tungsten: Syntheses and characterization",

abstract = "The first all-nitrogen coordinated bis(alkylamidinato)/bis(alkylimido) complexes of molybdenum and tungsten, [Mo(NtBu)2{(iPrN) 2CMe}2]and [W(NtBu)2{(iPrN)2CMe} 2], have been synthesized and fully characterized by 1H and 13C NMR spectroscopy, elemental analyses, high-resolution electron impact mass spectrometry, and Fourier transform infrared spectroscopy. Density functional theory calculations of the tungsten complex allow for geometry optimization and structural characterization by assignment of the NMR data, in particular a comparison of the experimental 13C NMR signals with the calculated ones. Both compounds sublime without decomposition at 130 °C and 1 mTorr and show rapid decomposition above 250 °C, hence representing promising vapor-phase deposition routes for metal nitride based thin-film materials.",

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T1 - All-nitrogen coordinated amidinato/imido complexes of molybdenum and tungsten

T2 - Syntheses and characterization

AU - Gwildies, Vanessa

AU - Thiede, Tobias B.

AU - Amirjalayer, Saeed

AU - Alsamman, Louay

AU - Devi, Anjana

AU - Fischer, Roland A.

PY - 2010/9/20

Y1 - 2010/9/20

N2 - The first all-nitrogen coordinated bis(alkylamidinato)/bis(alkylimido) complexes of molybdenum and tungsten, [Mo(NtBu)2{(iPrN) 2CMe}2]and [W(NtBu)2{(iPrN)2CMe} 2], have been synthesized and fully characterized by 1H and 13C NMR spectroscopy, elemental analyses, high-resolution electron impact mass spectrometry, and Fourier transform infrared spectroscopy. Density functional theory calculations of the tungsten complex allow for geometry optimization and structural characterization by assignment of the NMR data, in particular a comparison of the experimental 13C NMR signals with the calculated ones. Both compounds sublime without decomposition at 130 °C and 1 mTorr and show rapid decomposition above 250 °C, hence representing promising vapor-phase deposition routes for metal nitride based thin-film materials.

AB - The first all-nitrogen coordinated bis(alkylamidinato)/bis(alkylimido) complexes of molybdenum and tungsten, [Mo(NtBu)2{(iPrN) 2CMe}2]and [W(NtBu)2{(iPrN)2CMe} 2], have been synthesized and fully characterized by 1H and 13C NMR spectroscopy, elemental analyses, high-resolution electron impact mass spectrometry, and Fourier transform infrared spectroscopy. Density functional theory calculations of the tungsten complex allow for geometry optimization and structural characterization by assignment of the NMR data, in particular a comparison of the experimental 13C NMR signals with the calculated ones. Both compounds sublime without decomposition at 130 °C and 1 mTorr and show rapid decomposition above 250 °C, hence representing promising vapor-phase deposition routes for metal nitride based thin-film materials.

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JO - Inorganic Chemistry

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ER -

All-nitrogen coordinated amidinato/imido complexes of molybdenum and tungsten: Syntheses and characterization

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