Multinuclear NMR and X-ray diffraction study of pentacoordinated siloxane structures derived of pyridine diols

Elizabeth Gómez; Zulema Hernández; Cecilio Alvarez-Toledano; Rubén A. Toscano; Víctor Santes; Pankaj Sharma

doi:10.1016/S0022-328X(01)01471-1

Multinuclear NMR and X-ray diffraction study of pentacoordinated siloxane structures derived of pyridine diols

Elizabeth Gómez, Zulema Hernández, Cecilio Alvarez-Toledano, Rubén A. Toscano, Víctor Santes, Pankaj Sharma

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

17 Scopus citations

Abstract

Synthesis and characterization of hypervalent pentacoordinated organosilicon complexes obtained from the reaction of disubstituted pyridine ligands with dichlorodiphenylsilane, dichloromethylphenylsilane and bis(dimethylamino)dimethylsilane are reported. The monomeric complexes obtained were characterized by mass spectrometry and multinuclear NMR spectroscopy; additionally their structures were established by X-ray diffraction analysis. The structural parameters indicated Si-N interaction with pentacoordinated geometries displaced towards trigonal bipyramid (TBP); the ²⁹ Si-NMR data for these compounds are in agreement with the presence of N → Si bond. In addition to a variable temperature ¹H-NMR study was carried out showing a dynamic behavior for these compounds.

Original language	English
Pages (from-to)	280-287
Number of pages	8
Journal	Journal of Organometallic Chemistry
Volume	648
Issue number	1-2
DOIs	https://doi.org/10.1016/S0022-328X(01)01471-1
State	Published - 1 Apr 2002
Externally published	Yes

Keywords

Hypervalency
Pentacoordinated
Pyridinediols
Si-NMR
Siloxane
X-ray diffraction

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10.1016/S0022-328X(01)01471-1

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@article{c46cf6b056384adf9b87d9c29e75e179,

title = "Multinuclear NMR and X-ray diffraction study of pentacoordinated siloxane structures derived of pyridine diols",

abstract = "Synthesis and characterization of hypervalent pentacoordinated organosilicon complexes obtained from the reaction of disubstituted pyridine ligands with dichlorodiphenylsilane, dichloromethylphenylsilane and bis(dimethylamino)dimethylsilane are reported. The monomeric complexes obtained were characterized by mass spectrometry and multinuclear NMR spectroscopy; additionally their structures were established by X-ray diffraction analysis. The structural parameters indicated Si-N interaction with pentacoordinated geometries displaced towards trigonal bipyramid (TBP); the 29 Si-NMR data for these compounds are in agreement with the presence of N → Si bond. In addition to a variable temperature 1H-NMR study was carried out showing a dynamic behavior for these compounds.",

keywords = "Hypervalency, Pentacoordinated, Pyridinediols, Si-NMR, Siloxane, X-ray diffraction",

author = "Elizabeth G{\'o}mez and Zulema Hern{\'a}ndez and Cecilio Alvarez-Toledano and Toscano, {Rub{\'e}n A.} and V{\'i}ctor Santes and Pankaj Sharma",

note = "Funding Information: Financial support from CONACyT is grateful acknowledged. We thank M. en C. Francisco Javier P{\'e}rez Flores for recording mass spectrometry.",

year = "2002",

month = apr,

day = "1",

doi = "10.1016/S0022-328X(01)01471-1",

language = "Ingl{\'e}s",

volume = "648",

pages = "280--287",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

number = "1-2",

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TY - JOUR

T1 - Multinuclear NMR and X-ray diffraction study of pentacoordinated siloxane structures derived of pyridine diols

AU - Gómez, Elizabeth

AU - Hernández, Zulema

AU - Alvarez-Toledano, Cecilio

AU - Toscano, Rubén A.

AU - Santes, Víctor

AU - Sharma, Pankaj

N1 - Funding Information: Financial support from CONACyT is grateful acknowledged. We thank M. en C. Francisco Javier Pérez Flores for recording mass spectrometry.

PY - 2002/4/1

Y1 - 2002/4/1

N2 - Synthesis and characterization of hypervalent pentacoordinated organosilicon complexes obtained from the reaction of disubstituted pyridine ligands with dichlorodiphenylsilane, dichloromethylphenylsilane and bis(dimethylamino)dimethylsilane are reported. The monomeric complexes obtained were characterized by mass spectrometry and multinuclear NMR spectroscopy; additionally their structures were established by X-ray diffraction analysis. The structural parameters indicated Si-N interaction with pentacoordinated geometries displaced towards trigonal bipyramid (TBP); the 29 Si-NMR data for these compounds are in agreement with the presence of N → Si bond. In addition to a variable temperature 1H-NMR study was carried out showing a dynamic behavior for these compounds.

AB - Synthesis and characterization of hypervalent pentacoordinated organosilicon complexes obtained from the reaction of disubstituted pyridine ligands with dichlorodiphenylsilane, dichloromethylphenylsilane and bis(dimethylamino)dimethylsilane are reported. The monomeric complexes obtained were characterized by mass spectrometry and multinuclear NMR spectroscopy; additionally their structures were established by X-ray diffraction analysis. The structural parameters indicated Si-N interaction with pentacoordinated geometries displaced towards trigonal bipyramid (TBP); the 29 Si-NMR data for these compounds are in agreement with the presence of N → Si bond. In addition to a variable temperature 1H-NMR study was carried out showing a dynamic behavior for these compounds.

KW - Hypervalency

KW - Pentacoordinated

KW - Pyridinediols

KW - Si-NMR

KW - Siloxane

KW - X-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=0036533273&partnerID=8YFLogxK

U2 - 10.1016/S0022-328X(01)01471-1

DO - 10.1016/S0022-328X(01)01471-1

M3 - Artículo

SN - 0022-328X

VL - 648

SP - 280

EP - 287

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 1-2

ER -

Multinuclear NMR and X-ray diffraction study of pentacoordinated siloxane structures derived of pyridine diols

Abstract

Keywords

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