Synthesis, Characterization, and Reaction Studies of Pd(II) Tripeptide Complexes

The aqueous synthesis of Pd(II) complexes with alkylated tripeptides led to the hydrolysis of the peptides at low pH values and mixtures of complexed peptides were formed. A non-aqueous synthetic route allowed the formation and isolation of single products and their characterization. Pd(II) complexe...
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Autor*in:	Lindsey J. Monger [verfasserIn] Dmitrii Razinkov [verfasserIn] Ragnar Bjornsson [verfasserIn] Sigridur G. Suman [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	Pd(II) tripeptide AspAlaGly β-AspAlaGly TrpAlaGly DFT

Übergeordnetes Werk:	In: Molecules - MDPI AG, 2003, 26(2021), 17, p 5169
Übergeordnetes Werk:	volume:26 ; year:2021 ; number:17, p 5169

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/molecules26175169

Katalog-ID:	DOAJ055873472

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language	English
source	In Molecules 26(2021), 17, p 5169 volume:26 year:2021 number:17, p 5169
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topic_facet	Pd(II) tripeptide AspAlaGly β-AspAlaGly TrpAlaGly DFT Organic chemistry
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authorswithroles_txt_mv	Lindsey J. Monger @@aut@@ Dmitrii Razinkov @@aut@@ Ragnar Bjornsson @@aut@@ Sigridur G. Suman @@aut@@
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callnumber-first	Q - Science
author	Lindsey J. Monger
spellingShingle	Lindsey J. Monger misc QD241-441 misc Pd(II) misc tripeptide misc AspAlaGly misc β-AspAlaGly misc TrpAlaGly misc DFT misc Organic chemistry Synthesis, Characterization, and Reaction Studies of Pd(II) Tripeptide Complexes
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topic_title	QD241-441 Synthesis, Characterization, and Reaction Studies of Pd(II) Tripeptide Complexes Pd(II) tripeptide AspAlaGly β-AspAlaGly TrpAlaGly DFT
topic	misc QD241-441 misc Pd(II) misc tripeptide misc AspAlaGly misc β-AspAlaGly misc TrpAlaGly misc DFT misc Organic chemistry
topic_unstemmed	misc QD241-441 misc Pd(II) misc tripeptide misc AspAlaGly misc β-AspAlaGly misc TrpAlaGly misc DFT misc Organic chemistry
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title	Synthesis, Characterization, and Reaction Studies of Pd(II) Tripeptide Complexes
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title_full	Synthesis, Characterization, and Reaction Studies of Pd(II) Tripeptide Complexes
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author_browse	Lindsey J. Monger Dmitrii Razinkov Ragnar Bjornsson Sigridur G. Suman
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title_sort	synthesis, characterization, and reaction studies of pd(ii) tripeptide complexes
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title_auth	Synthesis, Characterization, and Reaction Studies of Pd(II) Tripeptide Complexes
abstract	The aqueous synthesis of Pd(II) complexes with alkylated tripeptides led to the hydrolysis of the peptides at low pH values and mixtures of complexed peptides were formed. A non-aqueous synthetic route allowed the formation and isolation of single products and their characterization. Pd(II) complexes with α-Asp(OR)AlaGly(OR), β-Asp(OR)AlaGly(OR), and TrpAlaGly(OR) (R = H or alkyl) as tri and tetradentate chelates were characterized. The tridentate coordination mode was accompanied by a fourth monodentate ligand that was shown to participate in both ligand exchange reactions and a direct removal to form the tetradentate coordination mode. The tetradentate coordination revealed a rare a hemi labile carbonyl goup coordination mode to Pd(II). Reactivity with small molecules such as ethylene, acids, formate, and episulfide was investigated. Under acidic conditions and in the presence of ethylene; acetaldehyde was formed. The Pd(II) is a soft Lewis acid and thiophilic and the complexes abstract sulfur from episulfide at apparent modest catalytic rates. The complexes adopt a square planar geometry according to a spectroscopic analysis and DFT calculations that were employed to evaluate the most energetically favorable coordination geometry and compared with the observed infrared and NMR data.
abstractGer	The aqueous synthesis of Pd(II) complexes with alkylated tripeptides led to the hydrolysis of the peptides at low pH values and mixtures of complexed peptides were formed. A non-aqueous synthetic route allowed the formation and isolation of single products and their characterization. Pd(II) complexes with α-Asp(OR)AlaGly(OR), β-Asp(OR)AlaGly(OR), and TrpAlaGly(OR) (R = H or alkyl) as tri and tetradentate chelates were characterized. The tridentate coordination mode was accompanied by a fourth monodentate ligand that was shown to participate in both ligand exchange reactions and a direct removal to form the tetradentate coordination mode. The tetradentate coordination revealed a rare a hemi labile carbonyl goup coordination mode to Pd(II). Reactivity with small molecules such as ethylene, acids, formate, and episulfide was investigated. Under acidic conditions and in the presence of ethylene; acetaldehyde was formed. The Pd(II) is a soft Lewis acid and thiophilic and the complexes abstract sulfur from episulfide at apparent modest catalytic rates. The complexes adopt a square planar geometry according to a spectroscopic analysis and DFT calculations that were employed to evaluate the most energetically favorable coordination geometry and compared with the observed infrared and NMR data.
abstract_unstemmed	The aqueous synthesis of Pd(II) complexes with alkylated tripeptides led to the hydrolysis of the peptides at low pH values and mixtures of complexed peptides were formed. A non-aqueous synthetic route allowed the formation and isolation of single products and their characterization. Pd(II) complexes with α-Asp(OR)AlaGly(OR), β-Asp(OR)AlaGly(OR), and TrpAlaGly(OR) (R = H or alkyl) as tri and tetradentate chelates were characterized. The tridentate coordination mode was accompanied by a fourth monodentate ligand that was shown to participate in both ligand exchange reactions and a direct removal to form the tetradentate coordination mode. The tetradentate coordination revealed a rare a hemi labile carbonyl goup coordination mode to Pd(II). Reactivity with small molecules such as ethylene, acids, formate, and episulfide was investigated. Under acidic conditions and in the presence of ethylene; acetaldehyde was formed. The Pd(II) is a soft Lewis acid and thiophilic and the complexes abstract sulfur from episulfide at apparent modest catalytic rates. The complexes adopt a square planar geometry according to a spectroscopic analysis and DFT calculations that were employed to evaluate the most energetically favorable coordination geometry and compared with the observed infrared and NMR data.
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title_short	Synthesis, Characterization, and Reaction Studies of Pd(II) Tripeptide Complexes
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Synthesis, Characterization, and Reaction Studies of Pd(II) Tripeptide Complexes

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