ISOMERIZATION IN RHENIUM(V) COMPLEXES. THE ISOLATION AND CHARACTERIZATION OF<i>CIS</i>AND<i>TRANS</i>ISOMERS OF RHENIUM(V) COMPLEXES WITH DERIVATIVES OF 2-AMINO-1-CYCLOPENTENE-1-DITHIOCARBOXYLIC ACID

Gerber, Thomas; Kemp, H. J.; Preez, J. G. H. Du

doi:10.1080/00958979408024275

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…Para identificação de complexos do tipo [(R 3 P) 2 PtX 2 ] a magnitude da constante de acoplamento platina-fósforo no espectro de RMN 31 P{ 1 H} é uma indicação da geometria 51,52 . Os complexos cis apresentam tipicamente 1 A combinação das técnicas de absorção na região do infravermelho e ressonância magnética multinuclear, por exemplo, tem sido constantemente usada na tentativa de se determinar as geometrias dos mais diversos isômeros, podendo-se citar trabalhos realizados por Nelson e Krassowski 20,55 com complexos de rutênio contendo monofosfinas. Quando soluções de RuCl 3 .3H 2 O em 2-metoxietanol são refluxadas sob monóxido de carbono e uma monofosfina é adicionada, complexos do tipo [RuCl 2 (CO) 2 P 2 ] são prontamente formados.…”

Section: Algumas Técnicas Usadas Na Elucidação De Estruturas De Isômeunclassified

“…O fenômeno do isomerismo cis-trans em química inorgânica é capaz de ilustrar, em termos de número de exemplos conhecidos, o progresso da química inorgânica sintética. De fato, desde os estudos realizados por Werner no início deste século até os nossos dias, uma gama enorme de trabalhos envolvendo este tipo de isômeros vem sendo mencionada na literatura [1][2][3][4][5][6][7] .…”

Section: Introductionunclassified

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Isomerismo cis-trans: de Werner aos nossos dias

Queiroz¹,

Batista²

1998

Quím. Nova

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Recebido em 17/9/96; aceito em 17/9/97 CIS-TRANS ISOMERISM: FROM WERNER TO THE PRESENT DAYS: In coordination chemistry the study of geometrical isomerization and reactivity of specific isomers is a topic of major importance. The preparation of specific isomers often requires considerable complexity, and it is important to acquire a sense of what is involved in studying isomerism in laboratory. If it is difficult sometimes to prepare pure isomers, it is not easier to understand the mechanisms of isomerization reactions since studies on this subject have shown conflicting results and diferent interpretations on the same system have been reported in the literature. Although cis-trans isomerism in octahedral metal complexes is a common occurrence, there are relatively few studies reporting how these isomerizations occur. This paper gives an overview on cis-trans isomerization processes and identification of these species.

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Section: Algumas Técnicas Usadas Na Elucidação De Estruturas De Isômeunclassified

Section: Introductionunclassified

Isomerismo cis-trans: de Werner aos nossos dias

Queiroz¹,

Batista²

1998

Quím. Nova

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An oxorhenium(V) Schiff-base complex: Synthesis, characterisation, structure, spectroscopic and electrochemical aspects

Majumder

Bhattacharya

Naskar

et al. 2013

Inorganica Chimica Acta

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Substitution of nitrido by the oxo group in reactions of [ReNCl₂(PPh₃)₂] with multidentate N,O^–-donor chelates. Crystal structure of [ReOCl₂(PPh₃)(HL)][H₂L = 2,6-bis(hydroxymethyl)pyridine]

Gerber¹,

Bruwer²,

Bandoli³

et al. 1995

J. Chem. Soc., Dalton Trans.

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The complex [ReNCI,( PPh,),] reacts with the potentially bidentate 8-hydroxyquinoline (Hquin) and N-phenylsalicylideneimine (Hpsal), and potentially terdentate ligands di-2-pyridyl ketone and 2,6-bis( hydroxymethy1)pyridine (H,L) to form the products [ReOCl(quin),], [ReOCI,( PPh,) -(psal)], [ReOCI,{(C,H,N),C(O) (OH)}] and cis-[ReOCI,(PPh,)(HL)], respectively. The first three products are identical t o those isolated earlier by the reactions of trans-[ ReOCI,( PPh,),] with these ligands, while in the latter product the H L -ligand acts as a bidentate N.0--donor, spanning one axial (0trans to Re=O) and one equatorial co-ordination site. These reactions present an alternative synthetic route t o monooxorhenium(v) complexes. The complex cis-[ ReOCI,( PPh,) ( H L)] crystallizes in the orthorhombic space group P2,2,2, with cell parameters a = 10.01 9(3), b = 12.457(6), c = 19.53(1) A , U = 2436.5 A,, Z = 4, R = 0.059 and R' = 0.074 for 1330 reflections with F, > 40(F0).

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ISOMERIZATION IN RHENIUM(V) COMPLEXES. THE ISOLATION AND CHARACTERIZATION OFCISANDTRANSISOMERS OF RHENIUM(V) COMPLEXES WITH DERIVATIVES OF 2-AMINO-1-CYCLOPENTENE-1-DITHIOCARBOXYLIC ACID

Cited by 4 publications

References 9 publications

Isomerismo cis-trans: de Werner aos nossos dias

Isomerismo cis-trans: de Werner aos nossos dias

An oxorhenium(V) Schiff-base complex: Synthesis, characterisation, structure, spectroscopic and electrochemical aspects

Substitution of nitrido by the oxo group in reactions of [ReNCl₂(PPh₃)₂] with multidentate N,O^–-donor chelates. Crystal structure of [ReOCl₂(PPh₃)(HL)][H₂L = 2,6-bis(hydroxymethyl)pyridine]

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ISOMERIZATION IN RHENIUM(V) COMPLEXES. THE ISOLATION AND CHARACTERIZATION OFCISANDTRANSISOMERS OF RHENIUM(V) COMPLEXES WITH DERIVATIVES OF 2-AMINO-1-CYCLOPENTENE-1-DITHIOCARBOXYLIC ACID

Cited by 4 publications

References 9 publications

Isomerismo cis-trans: de Werner aos nossos dias

Isomerismo cis-trans: de Werner aos nossos dias

An oxorhenium(V) Schiff-base complex: Synthesis, characterisation, structure, spectroscopic and electrochemical aspects

Substitution of nitrido by the oxo group in reactions of [ReNCl2(PPh3)2] with multidentate N,O–-donor chelates. Crystal structure of [ReOCl2(PPh3)(HL)][H2L = 2,6-bis(hydroxymethyl)pyridine]

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Substitution of nitrido by the oxo group in reactions of [ReNCl₂(PPh₃)₂] with multidentate N,O^–-donor chelates. Crystal structure of [ReOCl₂(PPh₃)(HL)][H₂L = 2,6-bis(hydroxymethyl)pyridine]