The lethality of inorganic arsenic(As)and the threat it poses have made the development of efficient As detection systems a vital necessity.This research work demonstrates a sensing layer made of hydrous ferric oxide(...The lethality of inorganic arsenic(As)and the threat it poses have made the development of efficient As detection systems a vital necessity.This research work demonstrates a sensing layer made of hydrous ferric oxide(Fe_(2)H_(2)O_(4))to detect As(Ⅲ)and As(Ⅴ)ions in a surface plasmon resonance system.The sensor conceptualizes on the strength of Fe_(2)H_(2)O_(4) to absorb As ions and the interaction of plasmon resonance towards the changes occurring on the sensing layer.Detection sensitivity values for As(Ⅲ)and As(Ⅴ)were 1.083°·ppb^(–1) and 0.922°·ppb^(-1),respectively,while the limit of detection for both ions was 0.6 ppb.These findings support the feasibility and potential of the sensor configuration towards paving future advancement in As detection systems.展开更多
The title compounds(Me_2SiSiMe_2)(η-RC_3H_3)Fe(CO)(μ-CO)_2(R:H(1a),Me(1b))were prepared by heating a solution of RC_(?)H_4(Me_2SiSiMe_2)C_5H_4R and Fe(CO)_5 in xylene at reflux.(1a)and(1b)can convert into their isom...The title compounds(Me_2SiSiMe_2)(η-RC_3H_3)Fe(CO)(μ-CO)_2(R:H(1a),Me(1b))were prepared by heating a solution of RC_(?)H_4(Me_2SiSiMe_2)C_5H_4R and Fe(CO)_5 in xylene at reflux.(1a)and(1b)can convert into their isomers Me_2Si(η-RC_3H_3)Fe(CO)_2(?)2(R:H(2a), Me(2b))under the reaction conditions.The crystal and molecular structures of(1a),(2a) and(2b)were determined by X-ray diffraction.展开更多
The variable-temperature magnetic properties of the two phenoxybridged di-iron complexes(Et4N)2[Fe2(o-OC6H4S)4](1) and (Et4N)2[Fe2(o-OC6H4S)2(o-OC6H4SH)2] (2) with o-mercaptophenol ligand are reported. The J values ob...The variable-temperature magnetic properties of the two phenoxybridged di-iron complexes(Et4N)2[Fe2(o-OC6H4S)4](1) and (Et4N)2[Fe2(o-OC6H4S)2(o-OC6H4SH)2] (2) with o-mercaptophenol ligand are reported. The J values obtained show weak antiferromagnetic interactions of the iron atoms in both complexes. The spin states are S=5/2 and S=1 for the Fe(Ⅲ) and Fe(Ⅱ) ions in (1) and (2), respectively. The crystal structure of (2) is also presented.展开更多
基金funded by Ministry of Higher Education MalaysiaFundamental Research Grant Scheme(Grant No.FRGS/2/2014/TK03/UPM/01/1)+1 种基金the King Saud University,Kingdom of Saudi ArabiaResearchers Supporting Project(Grant No.RSP-2021/336).
文摘The lethality of inorganic arsenic(As)and the threat it poses have made the development of efficient As detection systems a vital necessity.This research work demonstrates a sensing layer made of hydrous ferric oxide(Fe_(2)H_(2)O_(4))to detect As(Ⅲ)and As(Ⅴ)ions in a surface plasmon resonance system.The sensor conceptualizes on the strength of Fe_(2)H_(2)O_(4) to absorb As ions and the interaction of plasmon resonance towards the changes occurring on the sensing layer.Detection sensitivity values for As(Ⅲ)and As(Ⅴ)were 1.083°·ppb^(–1) and 0.922°·ppb^(-1),respectively,while the limit of detection for both ions was 0.6 ppb.These findings support the feasibility and potential of the sensor configuration towards paving future advancement in As detection systems.
文摘The title compounds(Me_2SiSiMe_2)(η-RC_3H_3)Fe(CO)(μ-CO)_2(R:H(1a),Me(1b))were prepared by heating a solution of RC_(?)H_4(Me_2SiSiMe_2)C_5H_4R and Fe(CO)_5 in xylene at reflux.(1a)and(1b)can convert into their isomers Me_2Si(η-RC_3H_3)Fe(CO)_2(?)2(R:H(2a), Me(2b))under the reaction conditions.The crystal and molecular structures of(1a),(2a) and(2b)were determined by X-ray diffraction.
文摘The variable-temperature magnetic properties of the two phenoxybridged di-iron complexes(Et4N)2[Fe2(o-OC6H4S)4](1) and (Et4N)2[Fe2(o-OC6H4S)2(o-OC6H4SH)2] (2) with o-mercaptophenol ligand are reported. The J values obtained show weak antiferromagnetic interactions of the iron atoms in both complexes. The spin states are S=5/2 and S=1 for the Fe(Ⅲ) and Fe(Ⅱ) ions in (1) and (2), respectively. The crystal structure of (2) is also presented.
