Hexagonal Columns of Poly(n-alkyl propiolate) Produced with Rhodium Complex Catalyst. X-ray Analysis and Oxygen Permeability

1996 ◽  
Vol 29 (20) ◽  
pp. 6673-6675 ◽  
Author(s):  
M. Tabata ◽  
Y. Sadahiro ◽  
Y. Nozaki ◽  
Y. Inaba ◽  
K. Yokota
Keyword(s):  
Oxygen Permeability ◽  
Rhodium Complex ◽  
Complex Catalyst ◽  
X Ray

Stabilization of the dienonylic form of the A-ring of .beta.-estradiol by the "Cp*Rh" fragment. X-ray structure of the rhodium complex .alpha.-[(.eta.5-estradienonyl)RhCp*]BF4 (Cp* = C5Me5)

1990 ◽  
Vol 9 (11) ◽  
pp. 2871-2873 ◽  
Author(s):  
Hani El-Amouri ◽  
Michel Gruselle ◽  
Patricia A. Jackson ◽  
Gerard Jaouen ◽  
Jacqueline Vaissermann
Keyword(s):  
Rhodium Complex ◽  
X Ray

ChemInform Abstract: Branch Selective Allylation of Acetylacetone Catalyzed by Water-Soluble Rhodium Complex Catalyst.

ChemInform ◽  
2011 ◽  
Vol 42 (37) ◽  
pp. no-no
Author(s):  
Nobuyuki Komine ◽  
Kohtaro Ishiguro ◽  
Sachiyo Kanai ◽  
Masafumi Hirano ◽  
Sanshiro Komiya
Keyword(s):  
Water Soluble ◽  
Rhodium Complex ◽  
Complex Catalyst

Preparation and X-ray structure of a trinuclear rhodium complex with the polydentate 1,8-naphthyridine-2-one (onapy) ligand: [Rh3(μ3-onapy)2(CO)2(cod)2](ClO4)·1.5C2H4Cl2

1986 ◽  
Vol 111 (1) ◽  
pp. L1-L3 ◽  
Author(s):  
Antonio Tiripicchio ◽  
Fernando J. Lahoz ◽  
Luis A. Oro ◽  
Miguel A. Ciriano ◽  
B.Eva Villarroya
Keyword(s):  
Rhodium Complex ◽  
X Ray

Rhodium(I)-Komplexe mit 2,5-Difurfurylpyrrol-Liganden / Rhodium(I) Complexes with 2,5-Difurfurylpyrrole Ligands

1988 ◽  
Vol 43 (12) ◽  
pp. 1598-1610 ◽  
Author(s):  
Ekkehard Lindner ◽  
Horst W. Schneider ◽  
Riad Fawzi ◽  
Ulrich Englert ◽  
Wolfgang Hiller
Keyword(s):  
Carbon Monoxide ◽  
Structural Analysis ◽  
Rhodium Complex ◽  
Monoclinic Space Group ◽  
Rhodium Complexes ◽  
Reaction Sequence ◽  
Sodium Salts ◽  
Proton Abstraction ◽  
X Ray ◽  
H Nmr

Abstract The 2.5-difurfurylpyrrole-O.N.O ligands 3a, b [R = CO2C2H5 (a). COCH, (b)] are obtained by reaction of the furanes l a , b with the 2,5-bis(chloromethyl)pyrrole 2 in the presence of SnCl4. Proton abstraction from 3a, b with NaH affords the sodium salts 4a-Na and 4b-Na. Exchange of the chlorine bridges in [μ-ClRh(Diol)]2 (5,5') (Diol = cyclooctadiene, norbornadiene) results in the formation of the 14-electron complexes (Diol)Rh(O.N.O) (6a,6'a). Addition of PPh3, yields the four-coordinated rhodium complexes (Diol)Rh(O.N.O)(PPh3) (7a,7'a). These compounds are also available in a reverse reaction sequence from 5,5', PPh3, and 4a-Na. The mononuclear rhodium complexes RhCl(Diol)(PPh3) (8,8') are isolated as intermediates. In 7a, 7'a the olefinic ligands are replaced by carbon monoxide to give the dicarbonyl rhodium complex (OC)2Rh(O.N.O)(PPh3) (9a) being detectable only in solution. The same result is achieved upon addition of CO to the compound (OC)Rh(O.N.O)(PPh,) (11a) which results bv the reaction of [μ-ClRh(CO)(PPh3)]2 (10) with 4a-Na. Oxidative addition of CH3I or H2 to 6a, 6 a, 7a, 7'a or 11a was not observed. 1H and 31P{1H} NMR investigations indicate that depending on the temperature the O.N.O ligand in the 14-electron rhodium complex 11a acts as tri- (11a-A), bi- (11a-B) and monodentate (IIa-C) ligands. respectively. 11a also reacts with PPh, to form the /ram-bis(phosphane)rhodium complex (PPh3)2Rh(CO)(O.N.O) (12a). 12a and the analogous complexes 12b and trans-(PMe3)2Rh(CO)(O,N.O) (14a) are obtained by action of ClRh(CO)L2 (13) (L = PPh3. PMe3) on 4a-Na and 4b-Na, respectively. The methylene bridges in the O.N.O ligand 3a are not oxidized, neither in the non-complexed (3a) nor in the complexed (12a) state. According to an X-ray structural analysis 14a crystallizes in the monoclinic space group P21/n with Z = 4. In 6a, 6'a, 7a, 7'a, 9a, 11a, 12a, b, and 14a the O.N.O ligand is always nitrogen bonded

scholarly journals Synthesis and X-ray study of the P5-polyphosphorus rhodium complex [(dppm){Ph2PCH2P(Ph2)PPPP}Rh]OTf

2005 ◽  
Vol 61 (a1) ◽  
pp. c303-c303
Author(s):  
D. Yakhvarov ◽  
O. Sinyashin ◽  
P. Barbaro ◽  
S. Mañas ◽  
S. Midollini ◽  
...  
Keyword(s):  
Rhodium Complex ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document