
Zeitschrift fur Naturforschung, B: Chemical Sciences p. 1183 - 1196 (1996)
Update date:2022-08-03
Topics:
Brauer, David J.
Bitterer, Frank
D?rrenbach, Frank
He?ler, Gisbert
Stelzer, Othmar
Krüger, Carl
Lutz, Frank
The secondary phosphines R(Ar*)PH (R = Me, iPr, Ph, Mes, Ar*) (2a-2h) with bulky aromatic substituents Ar* (Ar* = 2,3,6-R′3C6H2, R′ = iPr, tBu) are obtained in good yields by reaction of RPCl2, PCl3, PBr3 or Ar*P(Cl,Br)2 with 2,4,6-tBu3C6H2Li or 2,4,6-iPr3C6H2MgBr and subsequent reduction of the intermediate halophosphines R(Ar*)PX (X = Cl, Br) with LiAlH4. The X-ray structural analysis of Ph(2,4,6-iPr3C6H2)PH (2g), space group P1, shows P-C-distances of 1.824(1) and 1.838(1)?. The lithium derivatives of 2a-2c are monomeric in solution as indicated by the 1 : 1 : 1 : 1-quartet 7Li-31P fine structure of the 31P{1H} NMR signals at low temperatures. 2a-2c and 2f-2h form Ni(0) and Fe(0) complexes (CO)3NiL (6a-6f) and Fe(CO)4L (7a-7d), respectively. The Tolman electronic parameters ν of the bulky ligands are almost identical. Within the series 2a-2h the spatial shielding of the P atoms has been estimated using advanced molecular modeling techniques. The bulky ligancl 2c forms coinage metal complexes [Cu(CH3CN)2(2c)2] [PF6] (8). Cu2Cl2(2c)2 (9) and Cl-Au(2c) (10). While 10 is monomeric in solution, in the solid state it forms pairs of head to tail oriented monomers with almost linear Cl-Au-P skeletons (Cl-Au-P 175.47(9)°) as shown by an X-ray structural analysis.
View MoreXiamen XM-Innovation Chemical Co., Ltd
Contact:+86-592-3216205
Address:Unit Q, 11/F, No.1 Office Building, Wuyuan Bay Business Center, Huli District, Xiamen City, Fujian Province, P.R.C
Yancheng Smiling Imp & Exp Co., Ltd.
Contact:+86-515-83173586
Address:Rm1207, BLD#03, Phoenix Plaza, Juheng Road, Yancheng, Jiangsu, P.R. China
Beijing Mesochem Technology Co.,LTD
website:http://www.mesochem.com
Contact:0086-10-57862036
Address:2301, Floor 23, Building 9 Lippo Plaza, Yard 8 Ronghua Middle Road, ETDZ, Beijing, China
Shandong Xinhua Pharmaceutical Co.,Ltd
website:http://www.xhzy.com
Contact:+86-533-2196801
Address:1 lutai road,zhangdian dis,Zibo City
Contact:13813902930 025-52714267
Address:20 Fengji Road, Yuhua Economic Development Zone, Nanjing, Jiangsu, P. R. China
Doi:10.1021/ol047686a
(2005)Doi:10.1007/BF00954165
()Doi:10.1246/cl.1982.977
(1982)Doi:10.1039/c1cc14622j
(2012)Doi:10.1016/S0040-4039(00)87521-8
(1982)Doi:10.1002/jhet.5570190408
(1982)