A 31P Nuclear Magnetic Resonance Investigation of the Structure, Equilibria, and Kinetics of in Solution

DOI: 10.1039/DT9800000776

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 776 - 785 (1980)

Update date:2022-08-05

Topics:

Authors:

Mann, Brian E.

Musco, Alfredo

Read Full Text PDF DownLoad Join now for total 90,000,000 free articles

Article abstract of DOI:10.1039/DT9800000776

The compounds (L = PMe3, PMe2Ph, PMePh2, PEt3 or PBuⁿ3), n3, P(p-tolyl)3, P(CH2Ph)3, PPrⁱ3, or P(C6H11)3>, and i3, P(C6H11)3, or PBu^t2Ph> have been prepared and shown to exist in solution.In the cases of L = PMePh2, PEt3, PBuⁿ3, n = 3 and L = PPrⁱ3, P(C6H11)3, n = 2 it has proved possible to measure the equilibrium constant, ΔH^<*>, and ΔS^<*> for n+1><*>n> + L.For , , , , n3)4>, i3)3> and 3>, the tertiary phosphine exchange is dissociative, while for 13)2> and 2> associative exchange occurs.In the case of and n3)3> both associative and dissociative exchange occur, the relative rates of which depend on the temperature and concentration of free tertiary phosphine.In the cases of i3)2> and2> a marked solvent effect has been found and attributed to possible toluene co-ordination producing in equlibrium with .No evidence is found for steric crowding affecting ΔH^<*> or ΔH⁺⁺, but ΔS^<*> and ΔS⁺⁺ are affected due to interpenetration of the ligands and resulting loss of motional freedom, while previously it has been assumed that interligand steric crowding destabilizes the molecule via enthalpy term.

Full text of DOI:10.1039/DT9800000776

View Article Online / Journal Homepage / Table of Contents for this issue

View Article Online

Products guided by the article

Product name:1-3-η-allylbis(tribenzylphosphine)platinum(II) hexafluorophosphate

Cas No:73047-26-4

R&D Labs maybe for 73047-26-4

Chengdu Cogon Bio-tech Co., Ltd.

Contact:86-28-85171192

Address:NO.52.YongFeng Rd. Chengdu,610041,P.R.China.
Shanghai Rich Chemicals Co., Ltd

website:http://www.richchemical.com

Contact:+86-21-20255798

Address:Pudong Shanghai,China
Shenyang NovPharm Technology Co., Ltd.

Contact:.+86-24-24165786

Address:Room 306, Hongjin Mansion, No. 36-1, Wanliutang Rd., Shenhe District, Shenyang, Liaoning, P.R.C.
Hangzhou GreenCo Science & Technology Co., Ltd.

Contact:86-571-88257303

Address:1713 Room,Jingui Building,Gudun Road,Xihu District,Hangzhou,China
Anhui Charm Imp.&Exp.Co., Ltd

website:http://www.chinacharm.cn/

Contact:86 551 5316260

Address:No. 211,XiangZhang Road,Hefei City,Anhui Province,China

Relevant to this article

Branched-chain Sugars. XIX. On the Application of 13C NMR Spectroscopy to the Configurational Assignment of 3-C-Substituents of Aldohexopyranose Derivatives

Doi:10.1246/bcsj.53.189
(1980)
Doi:10.1021/ja00517a088
(1979)
Convenient preparation of O-linked polymer-bound N-substituted hydroxylamines, intermediates for synthesis of N-substituted hydroxamic acids

Doi:10.1021/ol006152g
(2000)
An iron(II) diamine diketonate molecular complex: Synthesis, characterization and application in the CVD of Fe₂O₃ thin films

Doi:10.1016/j.ica.2011.10.036
(2012)
Species differences in the hepatic microsomal enzyme metabolism of the pyrrolizidine alkaloids

Doi:10.1016/S0378-4274(98)00152-0
(1998)
Stereospecific Transannular Cyclization of (Z)- and (E)-Thiacyclooct-4-enes: Synthesis and Carbon-13 Nuclear Magnetic Resonance Spectra of Substituted cis-1-Thioniabicyclo<3.3.0>octane Salts. Conformational Analysis (Force Field) of (E)-Thiacyclooct-4-ene

Doi:10.1021/jo01301a020
(1980)

Article Doi