Journal ArticleDOI
A study of the electronic properties of M(CO)4DAB (M = Cr, Mo, W; DAB = diazabutadiene). I. electronic `absorption, resonance raman, infrared, 13C- and 15N-NMR spectra
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In this paper, a very pronounced enhancement of Raman intensity was found in polar solvents for a polarized band at about 215 cm−1, which could therefore be assigned to the νs(M-N) mode by 15N enrichment of DAB.About:
This article is published in Inorganica Chimica Acta.The article was published on 1978-01-01. It has received 74 citations till now. The article focuses on the topics: Raman spectroscopy & NMR spectra database.read more
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Book ChapterDOI
1,4-Diaza-1,3-butadiene (a-diimine) ligands: their coordination modes and the reactivity of their metal complexes
G. van Koten,Kees Vrieze +1 more
TL;DR: In this article, it was shown that the 1,4-diaza-1,3-butadiene (R-DAB) molecule exists in solution in the E configuration at both C=N double bonds while the conformation of the central C-C bond is predominantly s-trans.
Journal ArticleDOI
Spectroscopy, photophysics and photochemistry of zerovalent transition metal α-diimine complexes
TL;DR: In this article, the formation of complexes metalliques carbonyles avec des derives de diimine et etude du mecanisme de reactions photochimiques au moyen de plusieurs techniques spectrometriques
Journal ArticleDOI
Triplet MLCT Photosensitization of the Ring‐Closing Reaction of Diarylethenes by Design and Synthesis of a Photochromic Rhenium(I) Complex of a Diarylethene‐Containing 1,10‐Phenanthroline Ligand
TL;DR: Results provided direct evidence that the formation of the closed form by the MLCT-sensitized photochromic process was derived from the (3)MLCT excited state, which supports the photosensitization mechanism.
Journal ArticleDOI
Highlights of the spectroscopy, photochemistry and electrochemistry of [M(CO)4(α-diimine)] complexes, M=Cr, Mo, W
Antonín Vlček,Antonín Vlček +1 more
TL;DR: The most interesting physical and chemical aspects of [M(CO) 4 (α-diimine)] complexes, which have more general relevance, are highlighted and discussed as mentioned in this paper, which have important implications for our understanding of the chemistry of organometallic complexes with noninnocent ligands.
Journal ArticleDOI
The syntheses and coordination properties of M(CO)3X(DAB) (M = Mn, Re; X = Cl, Br, I; DAB = 1,4-diazabutadiene)
L.H. Staal,Ad Oskam,Kees Vrieze +2 more
TL;DR: In this paper, the effect of the DAB substituents on the carbonyl stretching frequencies is in agreement with the A ′( cis > A ″ ( cis ) > A �( trans ) band ordering, showing that the charge density on the ligands is comparable in both types of d 6 metal complexes but is slightly different in the Fe- d 8 complexes.
References
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Journal ArticleDOI
On the Theory of Raman Intensities
TL;DR: In this article, the Herzberg-Teller development for vibronic transition moments is introduced into the Kramers-Heisenberg dispersion equation and an equation for the polarizability components is obtained which leads directly to the Raman selection rules.
Journal ArticleDOI
Zur Komplexchemie von Vierzentren-π-Systemen, III. Farbe, Solvatochromie und Reduktionspotentiale der 1.4-Diaza-butadien-molybdäntetracarbonyle
Heindirk tom Dieck,Ingo W. Renk +1 more
TL;DR: In this article, the authors show that the π-delocalisation of metal-D-electrons strongly depends on the substituents of the DAB-system, but the complex ground state has still molybdenum in the valence state 0.
Journal ArticleDOI
Metall(0)-Verbindungen mit nichtaromatischen Stickstoff-π-Systemen, VI. 1.4-Diaza-butadien-molybdän-tetracarbonyle: Synthesen, Eigenschaften und Bindungsmodell
Hans Bock,Heindirk tom Dieck +1 more
TL;DR: In this paper, the erste Metall(O)-Komplexe werden die auf verschiedenen Synthesewegen zuganglichen, unerwartet stabilen and intensiv farbigen Molybdan-tetracarbonyl-Derivate 2 vorgestellt.
Journal ArticleDOI
The nature of the lowest excited state and photosubstitution reactivity of tetracarbonyl-1,10-phenanthrolinetungsten(0) and related complexes
Mark S. Wrighton,David L. Morse +1 more
TL;DR: In this paper, the lowest excited state in every case is charge transfer (CT) in character, M→ CT in absorption, and in no case do the ligand field (LF) excited states cross below the CT state.
Related Papers (5)
Bonding properties of Mo(CO)4-xL(PR3)x (x = 0, 1, 2; L =diazabutadiene, pyridine-2-carbaldehyde imine and 2,2′-bipyridine). Infrared, electronic absorption, 1H, 13C and 31P NMR and resonanceraman spectra
Zur Komplexchemie von Vierzentren-π-Systemen, III. Farbe, Solvatochromie und Reduktionspotentiale der 1.4-Diaza-butadien-molybdäntetracarbonyle
Heindirk tom Dieck,Ingo W. Renk +1 more
Metall(0)-Verbindungen mit nichtaromatischen Stickstoff-π-Systemen, VI. 1.4-Diaza-butadien-molybdän-tetracarbonyle: Synthesen, Eigenschaften und Bindungsmodell
Hans Bock,Heindirk tom Dieck +1 more