Synthesis and characterization of gold(III) complexes with alkyldiamine ligands

Bassem A. Al-Maythalony; Mohamed I.M. Wazeer; Anvarhusein A. Isab

doi:10.1016/j.ica.2009.02.009

Synthesis and characterization of gold(III) complexes with alkyldiamine ligands

Bassem A. Al-Maythalony, Mohamed I.M. Wazeer, Anvarhusein A. Isab^*

^*Corresponding author for this work

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

14 Scopus citations

Abstract

A series of gold(III) metalacycle of five-, six- and seven-membered ring was prepared by reacting Auric acid (HAuCl₄ · 3H₂O) with 1 equiv. unsubstituted ethylenediamine (en), propylene diamine (pn) and butylenediamine (bn) ligands and with some N-mono-substituted as well as N,N′-disubstituted ethylenediamine ligands. The general formula of these complexes is [Au(alkyldiamine)Cl₂]Cl. These complexes are characterized by melting point and elemental analysis, while structural analysis was done by spectroscopic techniques such as UV-Vis, Far-IR, IR spectroscopy, ¹H and ¹³C solution as well as ¹³C and ¹⁵ N solid-state NMR. The solid-state ¹⁵ N NMR shows that the chemical shift difference between free and bound ligand decreases as bn > pn > en, indicating stronger Au-N bond for bn complex compared to pn and en. UV-Vis shows relative stability of the Au(III) complexes of unsubstituted ethylenediamine with respect to N,N′-di-substituted ethylenediamine. Far-IR data show the six-membered metalacycle gold(III) alkanediamine complexes to be more stable. Spectroscopic data are evaluated by comparisons with calculated data of the built and optimized structure by gaussian03 at the RB3LYP level with LanL2DZ bases set.

Original language	English
Pages (from-to)	3109-3113
Number of pages	5
Journal	Inorganica Chimica Acta
Volume	362
Issue number	9
DOIs	https://doi.org/10.1016/j.ica.2009.02.009
State	Published - 1 Jul 2009

Bibliographical note

Funding Information:
This research was supported by the KFUPM Research Committee under Project No. CY/GOLD/374 (IN070374).

Keywords

C and N CP MAS NMR
Computational analysis
Far-IR
Gold(III) ethylenediamine complexes
Solution NMR

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.ica.2009.02.009

Cite this

@article{d1c82be2ad2f446c8e60ae3b96901e21,

title = "Synthesis and characterization of gold(III) complexes with alkyldiamine ligands",

abstract = "A series of gold(III) metalacycle of five-, six- and seven-membered ring was prepared by reacting Auric acid (HAuCl4 · 3H2O) with 1 equiv. unsubstituted ethylenediamine (en), propylene diamine (pn) and butylenediamine (bn) ligands and with some N-mono-substituted as well as N,N′-disubstituted ethylenediamine ligands. The general formula of these complexes is [Au(alkyldiamine)Cl2]Cl. These complexes are characterized by melting point and elemental analysis, while structural analysis was done by spectroscopic techniques such as UV-Vis, Far-IR, IR spectroscopy, 1H and 13C solution as well as 13C and 15 N solid-state NMR. The solid-state 15 N NMR shows that the chemical shift difference between free and bound ligand decreases as bn > pn > en, indicating stronger Au-N bond for bn complex compared to pn and en. UV-Vis shows relative stability of the Au(III) complexes of unsubstituted ethylenediamine with respect to N,N′-di-substituted ethylenediamine. Far-IR data show the six-membered metalacycle gold(III) alkanediamine complexes to be more stable. Spectroscopic data are evaluated by comparisons with calculated data of the built and optimized structure by gaussian03 at the RB3LYP level with LanL2DZ bases set.",

keywords = "C and N CP MAS NMR, Computational analysis, Far-IR, Gold(III) ethylenediamine complexes, Solution NMR",

author = "Al-Maythalony, \{Bassem A.\} and Wazeer, \{Mohamed I.M.\} and Isab, \{Anvarhusein A.\}",

note = "Funding Information: This research was supported by the KFUPM Research Committee under Project No. CY/GOLD/374 (IN070374). ",

year = "2009",

month = jul,

day = "1",

doi = "10.1016/j.ica.2009.02.009",

language = "English",

volume = "362",

pages = "3109--3113",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

number = "9",

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TY - JOUR

T1 - Synthesis and characterization of gold(III) complexes with alkyldiamine ligands

AU - Al-Maythalony, Bassem A.

AU - Wazeer, Mohamed I.M.

AU - Isab, Anvarhusein A.

N1 - Funding Information: This research was supported by the KFUPM Research Committee under Project No. CY/GOLD/374 (IN070374).

PY - 2009/7/1

Y1 - 2009/7/1

N2 - A series of gold(III) metalacycle of five-, six- and seven-membered ring was prepared by reacting Auric acid (HAuCl4 · 3H2O) with 1 equiv. unsubstituted ethylenediamine (en), propylene diamine (pn) and butylenediamine (bn) ligands and with some N-mono-substituted as well as N,N′-disubstituted ethylenediamine ligands. The general formula of these complexes is [Au(alkyldiamine)Cl2]Cl. These complexes are characterized by melting point and elemental analysis, while structural analysis was done by spectroscopic techniques such as UV-Vis, Far-IR, IR spectroscopy, 1H and 13C solution as well as 13C and 15 N solid-state NMR. The solid-state 15 N NMR shows that the chemical shift difference between free and bound ligand decreases as bn > pn > en, indicating stronger Au-N bond for bn complex compared to pn and en. UV-Vis shows relative stability of the Au(III) complexes of unsubstituted ethylenediamine with respect to N,N′-di-substituted ethylenediamine. Far-IR data show the six-membered metalacycle gold(III) alkanediamine complexes to be more stable. Spectroscopic data are evaluated by comparisons with calculated data of the built and optimized structure by gaussian03 at the RB3LYP level with LanL2DZ bases set.

AB - A series of gold(III) metalacycle of five-, six- and seven-membered ring was prepared by reacting Auric acid (HAuCl4 · 3H2O) with 1 equiv. unsubstituted ethylenediamine (en), propylene diamine (pn) and butylenediamine (bn) ligands and with some N-mono-substituted as well as N,N′-disubstituted ethylenediamine ligands. The general formula of these complexes is [Au(alkyldiamine)Cl2]Cl. These complexes are characterized by melting point and elemental analysis, while structural analysis was done by spectroscopic techniques such as UV-Vis, Far-IR, IR spectroscopy, 1H and 13C solution as well as 13C and 15 N solid-state NMR. The solid-state 15 N NMR shows that the chemical shift difference between free and bound ligand decreases as bn > pn > en, indicating stronger Au-N bond for bn complex compared to pn and en. UV-Vis shows relative stability of the Au(III) complexes of unsubstituted ethylenediamine with respect to N,N′-di-substituted ethylenediamine. Far-IR data show the six-membered metalacycle gold(III) alkanediamine complexes to be more stable. Spectroscopic data are evaluated by comparisons with calculated data of the built and optimized structure by gaussian03 at the RB3LYP level with LanL2DZ bases set.

KW - C and N CP MAS NMR

KW - Computational analysis

KW - Far-IR

KW - Gold(III) ethylenediamine complexes

KW - Solution NMR

UR - https://www.scopus.com/pages/publications/67349202858

U2 - 10.1016/j.ica.2009.02.009

DO - 10.1016/j.ica.2009.02.009

M3 - Article

AN - SCOPUS:67349202858

SN - 0020-1693

VL - 362

SP - 3109

EP - 3113

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

IS - 9

ER -

Synthesis and characterization of gold(III) complexes with alkyldiamine ligands

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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