Synthesis and characterization of aluminum ethyl-(S)-lactate complexes and VT NMR studies of [Bu2iAl((S)-(-)-μ2-OC(H)(Me)C(O)OEt))] 2

Bao Tsan Ko; Fa Cherng Wang; Yih Lu Sun; Chia Her Lin; Chu Chieh Lin; Chen Yuan Kuo

doi:10.1016/S0277-5387(98)00236-8

Synthesis and characterization of aluminum ethyl-(S)-lactate complexes and VT NMR studies of [Bu₂ⁱAl((S)-(-)-μ₂-OC(H)(Me)C(O)OEt))] ₂

Bao Tsan Ko, Fa Cherng Wang, Yih Lu Sun, Chia Her Lin, Chu Chieh Lin^*, Chen Yuan Kuo

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The reactions of ethyl-(S)-(-)-lactate with R₃Al in diethyl ether yield the pentacoordinated complexes [R₂Al((S)-(-)-μ₂-OC(H)(Me)C(O)OEt))]₂ (1: R=Me; 2: R=Et; 3: R=Buⁱ). These compounds have been characterized by spectroscopic studies as wells as crystallographic method. These structures show dimeric features containing unusual 5.4.5-fused rings with an Al₂O₂ core and the ester group bonded to Al through the CO. VT NMR studies of compound 3 suggest that the weak (CO)→M dative bond may undergo dissociation in solution, giving rise to the equilibrium with a four-coordinate species among two five-coordinate species at ambient temperature.

Original language	English
Pages (from-to)	4257-4264
Number of pages	8
Journal	Polyhedron
Volume	17
Issue number	23-24
DOIs	https://doi.org/10.1016/S0277-5387(98)00236-8
Publication status	Published - 1998 Nov 13
Externally published	Yes

Keywords

Alkoxide
Aluminum
Ethyl-(S)-lactate
Fluxional

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/S0277-5387(98)00236-8

Cite this

@article{b62e0f5b03b941249803efc5212b7a54,

title = "Synthesis and characterization of aluminum ethyl-(S)-lactate complexes and VT NMR studies of [Bu2iAl((S)-(-)-μ2-OC(H)(Me)C(O)OEt))] 2",

abstract = "The reactions of ethyl-(S)-(-)-lactate with R3Al in diethyl ether yield the pentacoordinated complexes [R2Al((S)-(-)-μ2-OC(H)(Me)C(O)OEt))]2 (1: R=Me; 2: R=Et; 3: R=Bui). These compounds have been characterized by spectroscopic studies as wells as crystallographic method. These structures show dimeric features containing unusual 5.4.5-fused rings with an Al2O2 core and the ester group bonded to Al through the CO. VT NMR studies of compound 3 suggest that the weak (CO)→M dative bond may undergo dissociation in solution, giving rise to the equilibrium with a four-coordinate species among two five-coordinate species at ambient temperature.",

keywords = "Alkoxide, Aluminum, Ethyl-(S)-lactate, Fluxional",

author = "Ko, {Bao Tsan} and Wang, {Fa Cherng} and Sun, {Yih Lu} and Lin, {Chia Her} and Lin, {Chu Chieh} and Kuo, {Chen Yuan}",

note = "Funding Information: —Financial support from the National Science Council of the Republic of China is gratefully acknowledged.",

year = "1998",

month = nov,

day = "13",

doi = "10.1016/S0277-5387(98)00236-8",

language = "English",

volume = "17",

pages = "4257--4264",

journal = "Polyhedron",

issn = "0277-5387",

publisher = "Elsevier Limited",

number = "23-24",

}

TY - JOUR

T1 - Synthesis and characterization of aluminum ethyl-(S)-lactate complexes and VT NMR studies of [Bu2iAl((S)-(-)-μ2-OC(H)(Me)C(O)OEt))] 2

AU - Ko, Bao Tsan

AU - Wang, Fa Cherng

AU - Sun, Yih Lu

AU - Lin, Chia Her

AU - Lin, Chu Chieh

AU - Kuo, Chen Yuan

N1 - Funding Information: —Financial support from the National Science Council of the Republic of China is gratefully acknowledged.

PY - 1998/11/13

Y1 - 1998/11/13

N2 - The reactions of ethyl-(S)-(-)-lactate with R3Al in diethyl ether yield the pentacoordinated complexes [R2Al((S)-(-)-μ2-OC(H)(Me)C(O)OEt))]2 (1: R=Me; 2: R=Et; 3: R=Bui). These compounds have been characterized by spectroscopic studies as wells as crystallographic method. These structures show dimeric features containing unusual 5.4.5-fused rings with an Al2O2 core and the ester group bonded to Al through the CO. VT NMR studies of compound 3 suggest that the weak (CO)→M dative bond may undergo dissociation in solution, giving rise to the equilibrium with a four-coordinate species among two five-coordinate species at ambient temperature.

AB - The reactions of ethyl-(S)-(-)-lactate with R3Al in diethyl ether yield the pentacoordinated complexes [R2Al((S)-(-)-μ2-OC(H)(Me)C(O)OEt))]2 (1: R=Me; 2: R=Et; 3: R=Bui). These compounds have been characterized by spectroscopic studies as wells as crystallographic method. These structures show dimeric features containing unusual 5.4.5-fused rings with an Al2O2 core and the ester group bonded to Al through the CO. VT NMR studies of compound 3 suggest that the weak (CO)→M dative bond may undergo dissociation in solution, giving rise to the equilibrium with a four-coordinate species among two five-coordinate species at ambient temperature.

KW - Alkoxide

KW - Aluminum

KW - Ethyl-(S)-lactate

KW - Fluxional

UR - http://www.scopus.com/inward/record.url?scp=0008309351&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0008309351&partnerID=8YFLogxK

U2 - 10.1016/S0277-5387(98)00236-8

DO - 10.1016/S0277-5387(98)00236-8

M3 - Article

AN - SCOPUS:0008309351

SN - 0277-5387

VL - 17

SP - 4257

EP - 4264

JO - Polyhedron

JF - Polyhedron

IS - 23-24

ER -