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Titolo:
Synthesis and characterisation of a series of ruthenium scorpionate complexes with B-H center dot center dot center dot M agostic nteractions. Crystal structure of [RuH(kappa(2)-N,BH Tp(Tn))(PMe3)(cod)] (Tp(Tn) = hydrotris[3-(2-thienyl)pyrazol-1-yl]borate)
Autore:
Caballero, A; Gomez-de la Torre, F; Jalon, FA; Manzano, BR; Rodriguez, AM; Trofimenko, S; Sigalas, MP;
Indirizzi:
Univ Castilla La Mancha, Fac Quim, Dept Quim Inorgan Organ & Bioquim, E-13071 Ciudad Real, Spain Univ Castilla La Mancha Ciudad Real Spain E-13071 071 Ciudad Real, Spain Escuela Tecn Super Ingn Ind, Ciudad Real 13071, Spain Escuela Tecn Super Ingn Ind Ciudad Real Spain 13071 ad Real 13071, Spain Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA Univ Delaware Newark DE USA 19716 pt Chem & Biochem, Newark, DE 19716 USA Aristotelian Univ Salonika, Dept Chem, Lab Appl Quantum Chem, GR-54006 Salonika, Greece Aristotelian Univ Salonika Salonika Greece GR-54006 006 Salonika, Greece
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
fascicolo: 4, , anno: 2001,
pagine: 427 - 433
SICI:
1472-7773(2001):4<427:SACOAS>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
EFFECTIVE CORE POTENTIALS; MOLECULAR CALCULATIONS; REACTIVITY; CHEMISTRY; LIGAND; RU;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Jalon, FA Univ Castilla La Mancha, Fac Quim, Dept Quim Inorgan Organ & Bioquim, AvdaCamilo Jose Cela 10, E-13071 Ciudad Real, Spain Univ Castilla La Mancha Avda Camilo Jose Cela 10 Ciudad Real Spain E-13071
Citazione:
A. Caballero et al., "Synthesis and characterisation of a series of ruthenium scorpionate complexes with B-H center dot center dot center dot M agostic nteractions. Crystal structure of [RuH(kappa(2)-N,BH Tp(Tn))(PMe3)(cod)] (Tp(Tn) = hydrotris[3-(2-thienyl)pyrazol-1-yl]borate)", J CHEM S DA, (4), 2001, pp. 427-433

Abstract

A series of monohydrides of Ru-II of formula RuH(Tp(R))(cod) 1-3 have beensynthesized from the reaction of [RuH(NH2NMe2)(3)(cod)]BPh4 with the corresponding Tp(R) ligand {hydrotris(7-methylindazol-2-yl)borate, Tp(Bo,7Me), 1; hydrotris[3-(2-thienyl)pyrazol-1-yl]borate, Tp(Tn), 2; tris[3-(2,4-dimethoxyphenyl)pyrazol-1-yl]hydroborate, Tp(2)((2,4(OMe))Ph), 3}. In these compounds the Tp ligand is kappa (3) N,N',BH coordinated with a B-H . . . Ru agostic interaction. Reactions of 1 and 2 with two-electron donor ligands, L=PMe3, PMe2Ph and CN-t-Bu, led to the formation of complexes of formula RuH(Tp(R))(L)(cod) (Tp(R)=Tp(Bo,7Me), L=PMe3 4, PMe2Ph 5 or CN-t-Bu 6; Tp(R)=Tp(Tn), L=PMe3 7, PMe2Ph 8 or CN-t-Bu, 9). In this new series the incoming ligands replace one of the coordinated pyrazole rings instead of the stated B-H . . . Ru interaction which remains and consequently the Tp(R) ligands arekappa (2) N,BH coordinated. The molecular structure of 7 was determined byan X-ray diffraction study. The ruthenium atom has a distorted octahedral environment with the ligand Tp(Tn) coordinated through only one pyrazole ring and an agostic B-H group. The two hydrides are in a mutually trans disposition with an angle of 166 degrees. The Ru . . .H distance is 2.07(5) and Ru-H-terminal 1.33(5) Angstrom. The molecular structure of the model complex [RuH(kappa (2)-N,BH-Tp)(PH3)(H2C=CH2)(2)] has been optimised with the aidof ab initio calculations in order to compare the structural parameters with those of the experimentally determined structure.

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Documento generato il 09/04/20 alle ore 19:56:33