Concerning the Synthesis of Dithio-α-diketone Complexes of Transition Metals from Thiophosphates of 1,2-Dithiols

Schrauzer, G. N.; Mayweg, V. P.; Heinrich, W.

doi:10.1021/ic50033a018

Cited by 63 publications

(25 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The two iron atoms are maintained at a distance from 2.56 Å with a dithiodiphenylethylene group. It was identical to the compound already described in the literature [37] which was synthesized by reaction of the tetraphenyldithine [38] or the diphenylthiirene-1-oxide [39] with Fe 2 (CO) 9 . The ORTEP plot is given in Fig.…”

Section: X-ray Crystal Analysismentioning

confidence: 99%

Unexpected fragmentation of phenyldithiobenzoate, formation and X-ray structure of [μ,η2(S,S)-1,2-(dithio)-1,2-(diphenylethylene)] diiron hexacarbonyl complex

Mousser¹,

Darchen²,

Mousser³

2010

Journal of Organometallic Chemistry

View full text Add to dashboard Cite

Section: X-ray Crystal Analysismentioning

confidence: 99%

Unexpected fragmentation of phenyldithiobenzoate, formation and X-ray structure of [μ,η2(S,S)-1,2-(dithio)-1,2-(diphenylethylene)] diiron hexacarbonyl complex

Mousser¹,

Darchen²,

Mousser³

2010

Journal of Organometallic Chemistry

View full text Add to dashboard Cite

“…However, many 1,2-ene-dithiolates can be prepared as metal complexes where the 1,2-ene-dithiolate is stabilized as a chelating ligand (as is suggested for Moco) (18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28). Synthetic routes to métallo-1,2-ene-dithiolate complexes include the reactions of metal complexes (containing labile ligands) with dithines (26), dithiolium salts (79,29) or ahydroxy ketones in the presence of P4S10 (17), as shown in equations 1, 2, and 3, respectively. Another interesting synthetically useful method for the preparation of dithiolenes is the reaction of a metal polysulfido complex with an alkyne as shown in equation 4 (8,11,18,21,22,24).…”

Section: Synthetic Strategy For Mocomentioning

confidence: 99%

Pterins, Quinoxalines, and Metallo-Ene-Dithiolates

Pilato

Eriksen

Greaney

et al. 1993

ACS Symposium Series

View full text Add to dashboard Cite

The syntheses of the molybdopterin decomposition products, such as Form A, provide starting points for the total synthesis of Moco. Specifically, C(6) alkyne-substituted pterins similar to Form A react with metal polysulfides to yield the molybdenum-ene-dithiolate moiety of Moco. Syntheses are reported for the pterin-ene-dithiolate and quinoxaline-ene-dithiolate complexes (C 5 H 5 ) 2 Mo-{S2C2[C(O)R]R'} where R = CH3, CH 2 OSiPh 2 tBu, and R' = N-pivaloyl-6-pterin, 2-quinoxaline. Intermediates in the preparation are the unprecedented ene-1-thiolate-2-perthiolate (trithiolene) complexes. Reactions of the molybdenum ene-dithiolate complexes include the oxidation of Mo(IV) to Mo(V), reduction of the side-chain carbonyl, and transmetallation. The complexes (C 5 H 5 )2Mo-{S2C2[C(O)CH3]R'} have been ≥ 81% 34 S enriched. Resonance Raman studies identify a υ(Mo-S) stretch at 350 cm-1, similar to a band in DMSO reductase. Fluorescence of the oxidized pterin is quenched in the metal ene-dithiolate and ene-1-thiolate-2-perthiolate complexes.The proposed structure for Moco, the cofactor found in all the molybdoenzymes except nitrogenase, is shown in figure 1. The first coordination sphere of molybdenum has been defined by EXAFS (Extended X-ray Absorption Fine Structure) (7-5) and all of the enzymes appear to possess thiolate ligation of molybdenum and (with the possible exception of dissimilatory nitrate reductase and formate dehydrogenase) either dioxo or oxo-sulfido ligation of the Mo(VI) state. The molybdopterin derivatives Form A, camMPT, Form Β and urothione, shown in figure 2 have been isolated and when combined with EXAFS results have led to the proposed Moco structure (4-7). The isolated C(6)-substituted pterins possess unsaturated carbon atoms α and β to the pterin ring. Sulfur functionalities are associated with these unsaturated carbons in camMPT, Form Β and urothione. The formation of these compounds is consistent with the decomposition of the proposed 4 Current address:

show abstract

“…These were collected, washed with acetone, and vacuum dried. Finally, the product was obtained [25][26][27][28][29]. The infrared spectra of NIR860 is given in Fig.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of a flexible night vision imaging system filter for avionic LED displays

Yang

Wang

Zhang

2015

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

A flexible near-infrared (NIR) absorption filter well suited for use as a front surface filter for night vision imaging system (NVIS) LED displays was prepared by using a transparent polymer film and acrylic resin as substrate, NIR-dyes NIR787 and NIR860 as functional additives through the solvent mixing method. In particular, this new dye-based NVIS filter material offers sharp spectral cut-off and excellent extinction in the NIR (665-930 nm) along with an appropriate transmittance in the visible spectrum (400-700 nm). The optical performance of the filter was studied, the optimal dosage of NIR787 and NIR860 was determined and the results showed there was a good linear relationship between amount of NIR-dyes and light transmittance. In addition, the filter kept good environmental stability after cyclic humid heat test, high temperature aging test, low temperature aging test and photostability test.

show abstract

Concerning the Synthesis of Dithio-α-diketone Complexes of Transition Metals from Thiophosphates of 1,2-Dithiols

Cited by 63 publications

References 0 publications

Unexpected fragmentation of phenyldithiobenzoate, formation and X-ray structure of [μ,η2(S,S)-1,2-(dithio)-1,2-(diphenylethylene)] diiron hexacarbonyl complex

Unexpected fragmentation of phenyldithiobenzoate, formation and X-ray structure of [μ,η2(S,S)-1,2-(dithio)-1,2-(diphenylethylene)] diiron hexacarbonyl complex

Pterins, Quinoxalines, and Metallo-Ene-Dithiolates

Preparation and properties of a flexible night vision imaging system filter for avionic LED displays

Contact Info

Product

Resources

About