✦ LIBER ✦

Study of the reaction of MoOS2(S2CNR2)2 with PPh3 in 1,2-dichloroethane: Part I. Kinetics of the teaction of MoOS2(S2CNR2)2 with triphenylphosphine PPh3

✍ Scribed by Song Xiaoqing; Yang Huixing; Han Degang

Publisher: John Wiley and Sons
Year: 1989
Tongue: English
Weight: 386 KB
Volume: 21
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550210902

No coin nor oath required. For personal study only.

✦ Synopsis

The kinetics of the reaction of M O O S ~( S ~C N R ~) ~

( R = C H ? , C2H,, n-C,H,) with PPh3 have been studied using a Stopped-flow method. It was found t h a t these M o O S ~~S ~C N R ~) ~ complexes react with PPh, in the form of an irreversible second-order reaction. The rate constants at 25°C are respectively 48.4,23.8, and 20.8 mol-' dm3 sK1 and the activation energies are 4.8, 4.9, and 5.0 Kcal/mol with R = CH,, C2H5, and n-C,H,.

📜 SIMILAR VOLUMES

Study of the reaction of MoOS2(S2CNR2)2

Study of the reaction of MoOS2(S2CNR2)2 with PPh3 in 1,2-dichloroethane: Part II. Detection of reaction intermediate pentavalent molybdenum using ESR method at low temperature

✍ Song Xiaoqing; Yang Huixing; Han Degang 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 243 KB

## Intermediate product of the reaction of M O O S ~( S ~C N R ~) ~ and PPh3 in dichloroethane has been detected by ESR spectroscopy. Two ESR signals have been observed a t low temperature in the reaction system which was stopped by quenching it in liquid nitrogen. The g values are 2.020 ? 0.001 a

Fixation of the Dithiosulfate Ion S3O; P

Fixation of the Dithiosulfate Ion S3O; Preparation, Crystal Structure, and ESCA Spectrum of (PPh4)2[(S2)OMoS2MoO(S3O2)]

✍ Prof. Dr. Achim Müller; Uta Reinsch-Vogell; Erich Krickemeyer; Dr. Hartmut Bögge 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 250 KB 👁 2 views

Palladium(II) Complexes with the Mixed-D

Palladium(II) Complexes with the Mixed-Donor Ligand CH3S-(CH2)3-PPh2 Crystal Structures of [PdCl2{CH3S-(CH2)3-PPh2}n](n = 1, 2)

✍ Ehab M. Al-Shami; Adnan S. Abu-Surrah; Martti Klinga; Hamdallah A. Hodali 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 German ⚖ 84 KB 👁 1 views

The reactions of tetrakis(triphenylphosp

The reactions of tetrakis(triphenylphosphine)platinum and -palladium with selenium: X-Ray crystal structure of [Pt(Se2CH2)(PPh3)2]

✍ Pawan K. Khanna; Christopher P. Morley; Michael B. Hursthouse; K. M. Abdul Malik 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 431 KB

Treatment of tetrakis(tripheny1phosphine)platinum with elemental selenium (red or vitreous) in toluene solution under reflux yields an insoluble solid. This dissolves in dichloromethane with reaction, eventually to form a I : I mixture of [PtCl,(PPh,)J and the new compound [Pt(Se,CH,) (PPh,)J, which

2-Oxacyclopentylidene, 2-Oxacyclohexylid

2-Oxacyclopentylidene, 2-Oxacyclohexylidene, and 2-Oxacycloheptylidene Rhenium Complexes by Reaction of ω-Alkynols with the [{MeC(CH2PPh2)3}Re(CO)2]+ Auxiliary

✍ Claudio Bianchini; Andrea Marchi; Nicoletta Mantovani; Lorenza Marvelli; Dante M 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 749 KB

Various β-, γ-, and δ-alkynols have been reacted with the cedented seven-membered oxacarbene ring. The rheniumassisted δ-alkynol to 2-oxacyloheptylidene rearrangement 16e Ϫ fragment [(triphos)Re(CO) 2 ] + generated in situ by H 2 elimination from [(triphos)Re(CO) 2 (η 2 -H 2 )]BF 4 [triphos = procee

Structure of chain-ends in polybutadiene

Structure of chain-ends in polybutadiene produced with the CoBr2(PPh3)2/MgCl2/SiPh2(OCH3)2-Al(CH3)3 catalyst system

✍ Masaki Takeuchi; Takeshi Shiono; Kazuo Soga 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 266 KB

## Abstract Polymerization of 1,3‐butadiene with the CoBr~2~(PPh~3~)~2~/MgCl~2~/SiPh~2~(OCH~3~)~2~‐Al(CH~3~)~3~ catalyst system was conducted in the presence of ethylene. It was found that addition of ethylene causes a marked decrease in the molecular weight of polybutadiene although ethylene is no