Preparation of Four-membered Phosphonickelocycles. Unusual Facile Stabilization of Five-co-ordinate Complexes

DOI: 10.1039/DT9940003075

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 3075 - 3084 (1994)

Update date:2022-08-05

Topics:

Authors:

Font-Bardia, Merce

Gonzalez-Platas, Javier

Muller, Guillermo

Panyella, David

Rocamora, Merce

Solans, Xavier

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

Article abstract of DOI:10.1039/DT9940003075

Three different types of organometallic compounds (R = Ph 1 or Et 1'), (R = Ph 2 or Et 2') and (R = Ph 3 or Et 3') have been obtained from 1 equivalent of PR2(C6Cl5) (R = Ph or Et), (cod = cis,cis-cycloocta-1,5-diene), and L = PMe2Ph a, PEt3 b, P(CH2Ph)3 c or PPh3 d.Complexes 2 evolve in solution, either to 1 and , or to 3 by breaking of the Ni-P bond of the four-membered ring by free phosphine.The selective preparation of compounds 1 or 3 can be achieved by performing the oxidative-addition reaction in the absence or with 2 equivalents of L respectively.When 1 equivalent of a diphosphine was used in the oxidative-addition reaction a mononuclear five-co-ordinate complex was obtained, 4 .However, dppm (Ph2PCH2PPh2) acts as a monodentate ligand to give the five-co-ordinate compound .Complexes 2, 2' show preferentially a cis geometry, 1' is trans, and 3, 3' have the L ligands in trans position.Insertion of CO or alkynes into the Ni-C bond was not observed.Compounds 1 and 1' in the presence of neutral ligands L = CO or PR3 (PR3 = PMe2Ph a or PEt3 b) gave five-co-ordinate complexes without cleavage of the Ni-P bond of the ring.Stabilization of the four-membered ring is achieved when two bidentate ligands are present or in the five-co-ordinate compound .Two bidentate ligands are also needed to stabilize the formation of five-co-ordinate complexes.The molecular structures of complexes 1', 3b, and were determined by single-crystal X-ray diffraction.

Full text of DOI:10.1039/DT9940003075

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

View Article Online

Products guided by the article

Product name:

Cas No:160568-82-1

R&D Labs maybe for 160568-82-1

Beijing Mediking Biopharm Co., Ltd.

Contact:+86-10-89753524/81760121/81769521

Address:Hongxianghong Incubator, Beiqijia Town, Changping district, Beijing, China
Jinhua Haoyuan Chemical CO., LTD(expird)

Contact:86-579-82465583

Address:Jinhua,Zhejiang
Rudong Zhenfeng Yiyang Chemical Co., Ltd.

Contact:0513-84573047

Address:South Fengli Town, Rudong County, Jiangsu Province, China
Chinapeptides Co,. Ltd

Contact:+86-021-50792271

Address:Building 24A, 300 Chuantu Road, Chuansha, Pudong new area, Shanghai, China, 201202
CHANGYI CITY FENGRUN FINE CHEMICAL CO.,LTD

website:http://www.fengrunhuagong.com

Contact:+86-536-7869976

Address:Changyi Coastal Economic Development Zone

Relevant to this article

Synthesis, antiproliferative and anti-dengue virus evaluations of 2-aroyl-3-arylquinoline derivatives

Doi:10.1016/j.ejmech.2014.03.074
(2014)
Synthesis, spectral properties, and conformations of nonlinear crossconjugated polyenes containing pyrane or dihydropyridine fragment

Doi:10.1007/s11172-013-0292-x
(2013)
Spectroscopic characterization of a phenolate bound Fe^II-O ₂ adduct: Gauging the relative "push" effect of a phenolate axial ligand

Doi:10.1039/c3cc47528j
(2014)
Novel tartrate-derived guanidine-catalyzed highly enantio- and diastereoselective Michael addition of 3-substituted oxindoles to nitroolefins

Doi:10.1039/c4cc01817f
(2014)
Urea/thiourea as ammonia surrogate: A catalyst-free synthesis of 2-substituted 2,3-dihydroquinazolin-4(1 H)-ones/quinazoline-4(3 H)-ones

Doi:10.1080/00397911.2013.862551
(2014)
Reaktive Arsen-Heterocyclen. III. 3-Arsolene: Synthese und Reaktionen am Arsen

Doi:10.1016/0022-328X(94)88008-5
(1994)

Article Doi