Conformational diastereoisomers of PPh3 coordinated to stereogenic metal centres as molecular optical switches

被引:15
作者
Ayscough, AP
Costello, JF
Davies, SG
机构
[1] Univ Oxford, Dyson Perrins Lab, Oxford OX1 3QY, England
[2] Univ W England, Dept Chem, Bristol BS16 1QY, Avon, England
关键词
D O I
10.1016/S0957-4166(01)00253-1
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The specific rotation of (R-Fe,R,M)-4 switches sign upon epimerisation to (R-Fe,S,P)-5. X-Ray crystallographic studies suggest that inversion of the propeller configuration of the coordinated PPh3 ligand is a major contributor to the switch of specific rotation. A simple model for predicting the conformational diastereoisomeric forms of PPh3 is presented, suggesting future routes towards the design of molecular optical switching devices. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1621 / 1624
页数:4
相关论文
共 15 条
[1]   STEREOSELECTIVE REDUCTION OF (R,S)-[(ETA-5-C5H5)FE(CO)(PPH3)(=COCH2CH2CME2)]+ AND COMPLETE EPIMERIZATION OF THE KINETIC (RR,SS)-DIASTEREOISOMER TO THE THERMODYNAMIC (RS,SR)-DIASTEREOISOMER OF THE PRODUCT [(ETA-5-C5H5)FE(CO)(PPH3)(C(H)OCH2CH2CME2)] [J].
AYSCOUGH, AP ;
DAVIES, SG .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1986, (22) :1648-1649
[2]   Synthesis and structure of organoantimony (V) cyclometallates: transannular interactions and the barrier to cyclisation [J].
Barucki, H ;
Coles, SJ ;
Costello, JF ;
Hursthouse, MB .
JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2001, 622 (1-2) :265-273
[3]   Characterising secondary bonding interactions within triaryl organoantimony(V) and organobismuth(V) complexes [J].
Barucki, H ;
Coles, SJ ;
Costello, JF ;
Gelbrich, T ;
Hursthouse, MB .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 2000, (14) :2319-2325
[4]   A CONFORMATIONAL-ANALYSIS OF TRANSITION-METAL ETA-1-ACYL COMPLEXES - STERIC INTERACTIONS AND STEREOELECTRONIC EFFECTS [J].
BLACKBURN, BK ;
DAVIES, SG ;
SUTTON, KH ;
WHITTAKER, M .
CHEMICAL SOCIETY REVIEWS, 1988, 17 (02) :147-179
[5]   The conformational analysis of phosphine ligands in organometallic complexes. Part 1. Triphenylphosphine coordinated to an achiral metal centre [J].
Costello, JF ;
Davies, SG .
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1998, (07) :1683-1689
[6]   The conformational analysis of phosphine ligands in organometallic complexes. Part 2. Triphenylphosphine coordinated to achiral and prochiral octahedral metal centres [J].
Costello, JF ;
Davies, SG ;
McNally, D .
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1999, (03) :465-473
[7]   Intramolecular and supramolecular geometry of coordinated PPh3 [J].
Dance, I ;
Scudder, M .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 2000, (10) :1579-1585
[8]  
DAVIES SG, 1989, STEREOCHEMISTRY ORGA, V3, P141
[9]   Chiroptical molecular switches [J].
Feringa, BL ;
van Delden, RA ;
Koumura, N ;
Geertsema, EM .
CHEMICAL REVIEWS, 2000, 100 (05) :1789-1816
[10]   STRUCTURAL SYSTEMATICS .5. CONFORMATION AND BONDING IN THE CHIRAL METAL-COMPLEXES [M(ETA-5-C5R5)(XO)Z(PPH3)] [J].
GARNER, SE ;
ORPEN, AG .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1993, (04) :533-541