INIS Repository Search - Search Results

[en] Some Moessbauer spectroscopy studied on the series of tris (2-pyridinalimine) and tris (2-pydilketoimine) -iron (II) complexes are discussed. Drastic modifications are expected in the Moessbauer spectra for these complexes than in the tris (diimine) iron (II) complexes due to the greater proximity of the substituents to the iron atom. The fact that the different radicals are bonded to the imino nitrogen suggested that these compounds could be more suitable for systematic studies

Primary Subject

CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY (A1300)

Source

Aug 1977; 15 p

Record Type

Report

Report Number

CBPF--A0033/77

Country of publication

Brazil

Descriptors (DEI)

BONDING, IRON COMPLEXES, ISOMER SHIFT, MOESSBAUER EFFECT, PYRIDINES, QUADRUPOLE MOMENTS, ULTRALOW TEMPERATURE

Descriptors (DEC)

AZINES, COMPLEXES, FABRICATION, HETEROCYCLIC COMPOUNDS, JOINING, ORGANIC COMPOUNDS, ORGANIC NITROGEN COMPOUNDS, TRANSITION ELEMENT COMPLEXES

Reference NumberReference Number

9364105

INIS VolumeINIS Volume

INIS IssueINIS Issue

Metadata
Citation
Export

META

Kinetic studies of reactions occuring inside zeolitic cavities: substitution of sup(12)Co in Mo(sup(12)Co) sub(6)-Na sub(56)Y by PMe sub(3) and sup(13)Co

Pastore, H.O.; Vichi, E.J.S.; Ozin, G.A.; Oezkar, S.; Poe, A.J.1991

Metadata
Citation
Export

AbstractAbstract

[en] Published in summary form only

Original Title

Estudos cineticos de racoes no interior de cavidades zeoliticas: substituicao de sup(12)CO em mo( sup(12)CO) sub(6)-Na sub(56)Y por PMe sub(3) e sup(13)CO

Primary Subject

INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY (B1210)

Secondary Subject

INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY (B1120)

Source

14. Annual Meeting of the Brazilian Chemical Society; Caxambu, MG (Brazil); 15-18 May 1991

Record Type

Journal Article

Literature Type

Conference

Journal

Quimica Nova; ISSN 0100-4042;

; CODEN QUNOD; v. 14(2,suppl.); p. 158

Country of publication

Brazil

Descriptors (DEI)

CARBONYLS, INFRARED SPECTRA, ISOTOPIC EXCHANGE, MOLYBDENUM COMPOUNDS, NUCLEAR MAGNETIC RESONANCE, REACTION KINETICS, ZEOLITES

Descriptors (DEC)

INORGANIC ION EXCHANGERS, ION EXCHANGE MATERIALS, KINETICS, MAGNETIC RESONANCE, MATERIALS, MINERALS, RESONANCE, SILICATE MINERALS, SPECTRA, TRANSITION ELEMENT COMPOUNDS

LanguageLanguage

Portuguese

Reference NumberReference Number

22079769

INIS VolumeINIS Volume

INIS IssueINIS Issue

Metadata
Citation
Export

META

Moessbauer study of (Benzylideneacetone) Fe(Co)₂L complexes with L=CO, phosphines and phosphites

Vichi, E.J.S.; Stein, E.
Proceedings of the 1. Latin-American Conference on Applications of the Moessbauer Effect1988

Metadata
Citation
Export

AbstractAbstract

[en] It is established that in iron complexes, both ligand-L-> Fe bonding and Fe -> L back bonding increase the s electron density at the iron nucleus (1), with a consequent decrease in the isomer shift (δ) obtained from the Moessbauer spectrum. Through θ-bonding, electrons are transferred from the ligand to the proper iron orbitals which have, at least, partial 4s character. Through Π-back bonding, d electrons of the metal are transferred to the proper orbitals of the ligand, decreasing the shielding of the metal 3s electrons. So, δ measures the effect of (θ+Π) bonding on s electron density at the iron nucleus. The quadrupole splitting (ΔE_q), which is related to the electric field gradient at the iron nucleus and involves only d or p electrons, measures the effect of (θ-Π) bonding. Here, the results of a Moessbauer spectroscopy study on title complexes are reported. (author)

Primary Subject

CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY (A1310)

Source

Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil); Minas Gerais Univ., Belo Horizonte, MG (Brazil); Sao Paulo Univ., SP (Brazil); 445 p; 1988; p. 302-308; 1. Latin-American Conference on Applications of the Moessbauer Effect; Rio de Janeiro, RJ (Brazil); 31 Oct - 4 Nov 1988; Available from the Library of the Comissao Nacional de Energia Nuclear, RJ, Brazil

Record Type

Miscellaneous

Literature Type

Conference

Country of publication

Brazil

Descriptors (DEI)

IRON COMPOUNDS, ISOMER SHIFT, MOESSBAUER EFFECT, PHOSPHINES, PHOSPHOROUS ACID

Descriptors (DEC)

HYDROGEN COMPOUNDS, INORGANIC ACIDS, INORGANIC COMPOUNDS, OXYGEN COMPOUNDS, PHOSPHORUS COMPOUNDS, TRANSITION ELEMENT COMPOUNDS

Reference NumberReference Number

22013564

INIS VolumeINIS Volume

INIS IssueINIS Issue

Metadata
Citation
Export

META

Characterization of zeolitic ferrosilicate by electron paramagnetic resonance (E.P.R.)

Gomes, P.C.B.; Stein, E.; Vichi, E.J.S.; Silva, E.C. da; Gandra, F.G.1988

Metadata
Citation
Export

AbstractAbstract

[en] Published in summary form only

Original Title

Caracterizacao de ferrosilicato zeolitico por ressonancia paramagnetica eletronica (R.P.E.)

Primary Subject

INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY (B1110)

Source

40. Annual Meeting of the Brazilian Society for the Advancement of Science; Sao Paulo, SP (Brazil); 10-16 Jul 1988

Record Type

Journal Article

Literature Type

Conference

Journal

Ciencia e Cultura. Suplemento; ISSN 0102-2474;

; CODEN RRACD; v. 40(7); p. 470

Country of publication

Brazil

Descriptors (DEI)

ELECTRON SPIN RESONANCE, INFRARED SPECTRA, ION EXCHANGE, IRON SILICATES, IRON SULFATES, SILICA GEL, X-RAY DIFFRACTION, ZEOLITES

Descriptors (DEC)

ADSORBENTS, COHERENT SCATTERING, DIFFRACTION, INORGANIC ION EXCHANGERS, ION EXCHANGE MATERIALS, IRON COMPOUNDS, MAGNETIC RESONANCE, MATERIALS, MINERALS, OXYGEN COMPOUNDS, RESONANCE, SCATTERING, SILICATE MINERALS, SILICATES, SILICON COMPOUNDS, SPECTRA, SULFATES, SULFUR COMPOUNDS, TRANSITION ELEMENT COMPOUNDS

LanguageLanguage

Portuguese

Reference NumberReference Number

19091519

INIS VolumeINIS Volume

INIS IssueINIS Issue

Metadata
Citation
Export

META

Characterization of Cr(III) and Cr(IV) in crystalline zeolites silicates

Nakamura, O.; Vargas, H.; Pastore, H.O.; Mambrim, J.S.T.; Vichi, E.J.S.
Proceedings of the 14. National Meeting on Condensed Matter Physics1991

Metadata
Citation
Export

AbstractAbstract

[en] Published in summary form only

Original Title

Caracterizacao de Cr(III) e Cr(IV) em silicatos zeoliticos cristalinos

Primary Subject

CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY (G6100)

Source

Sociedade Brasileira de Fisica, Sao Paulo, SP (Brazil); 212 p; 1991; p. 203; 14. National Meeting on Condensed Matter Physics; Caxambu, MG (Brazil); 7-11 May 1991

Record Type

Miscellaneous

Literature Type

Conference

Report Number

INIS-BR--2923

Country of publication

Brazil

Descriptors (DEI)

CALCINATION, CHROMIUM, CRYSTAL STRUCTURE, MAGNETIC RESONANCE, OXIDATION, PHOTOACOUSTIC SPECTROSCOPY, SILICATES, ZEOLITES

Descriptors (DEC)

CHEMICAL REACTIONS, DECOMPOSITION, ELEMENTS, INORGANIC ION EXCHANGERS, ION EXCHANGE MATERIALS, MATERIALS, METALS, MINERALS, OXYGEN COMPOUNDS, PYROLYSIS, RESONANCE, SILICATE MINERALS, SILICON COMPOUNDS, SPECTROSCOPY, TRANSITION ELEMENTS

LanguageLanguage

Portuguese

Reference NumberReference Number

23056386

INIS VolumeINIS Volume

INIS IssueINIS Issue

Metadata
Citation
Export

À	Á	Â	Ã	Ä	Å	Ā	Æ
Ç	È	É	Ê	Ë	Ē	Ì	Í
Î	Ï	Ī	Ð	Ñ	Ò	Ó	Ô
Õ	Ö	Ø	Ō	Œ	Š	Ù	Ú
Û	Ü	Ū	Ý	Ÿ	Ȳ	Þ	à
á	â	ã	ä	å	ā	æ	ç
è	é	ê	ë	ē	ì	í	î
ï	ī	ð	ñ	ò	ó	ô	õ
ö	ø	ō	œ	š	ù	ú	û
ü	ū	ý	þ	ÿ	ȳ	Č	č
Ď	ď	ě	Ĺ	ľ	Ň	ň	Ř
ř	Ť	ť	ů	Ž	ž

À	Á	Â	Ã	Ä	Å	Ā	Æ
Ç	È	É	Ê	Ë	Ē	Ì	Í
Î	Ï	Ī	Ð	Ñ	Ò	Ó	Ô
Õ	Ö	Ø	Ō	Œ	Š	Ù	Ú
Û	Ü	Ū	Ý	Ÿ	Ȳ	Þ	à
á	â	ã	ä	å	ā	æ	ç
è	é	ê	ë	ē	ì	í	î
ï	ī	ð	ñ	ò	ó	ô	õ
ö	ø	ō	œ	š	ù	ú	û
ü	ū	ý	þ	ÿ	ȳ	Č	č
Ď	ď	ě	Ĺ	ľ	Ň	ň	Ř
ř	Ť	ť	ů	Ž	ž

À	Á	Â	Ã	Ä	Å	Ā	Æ
Ç	È	É	Ê	Ë	Ē	Ì	Í
Î	Ï	Ī	Ð	Ñ	Ò	Ó	Ô
Õ	Ö	Ø	Ō	Œ	Š	Ù	Ú
Û	Ü	Ū	Ý	Ÿ	Ȳ	Þ	à
á	â	ã	ä	å	ā	æ	ç
è	é	ê	ë	ē	ì	í	î
ï	ī	ð	ñ	ò	ó	ô	õ
ö	ø	ō	œ	š	ù	ú	û
ü	ū	ý	þ	ÿ	ȳ	Č	č
Ď	ď	ě	Ĺ	ľ	Ň	ň	Ř
ř	Ť	ť	ů	Ž	ž

À	Á	Â	Ã	Ä	Å	Ā	Æ
Ç	È	É	Ê	Ë	Ē	Ì	Í
Î	Ï	Ī	Ð	Ñ	Ò	Ó	Ô
Õ	Ö	Ø	Ō	Œ	Š	Ù	Ú
Û	Ü	Ū	Ý	Ÿ	Ȳ	Þ	à
á	â	ã	ä	å	ā	æ	ç
è	é	ê	ë	ē	ì	í	î
ï	ī	ð	ñ	ò	ó	ô	õ
ö	ø	ō	œ	š	ù	ú	û
ü	ū	ý	þ	ÿ	ȳ	Č	č
Ď	ď	ě	Ĺ	ľ	Ň	ň	Ř
ř	Ť	ť	ů	Ž	ž