scholarly journals SYNTHESIS AND CHARACTERIZATION OF COMPLEX DIAQUADIHYDANTOIN NICKEL(II) SULFAT MONOHIDRAT)

2016 ◽  
Vol 10 (2) ◽  
pp. 137
Author(s):  
Sentot Budi Rahardjo ◽  
Surya Dewi Marliyana ◽  
Nur Asih Siwi Wulandari
Keyword(s):  
Thermal Analysis ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Functional Group ◽  
Synthesis And Characterization ◽  
Infra Red ◽  
Thermal Analyser ◽  
Differential Thermal Analyser

<p>The purpose of the research is to find out the synthesis, formula and characteristic of complex of Nickel(II) with hydantoin (hyd). Complex of nickel(II) with  hydantoin  have been synthesized in 1 : 1 mole ratio of metal to ligan in methanol.The formula of  complex which are predicted from analysis of % Ni in complex by Atomic Absorption Spectroscopy (AAS) is Ni(hyd)<sub>2</sub>(H<sub>2</sub>O)<sub>3</sub>.SO<sub>4</sub>.  Ratio  of  cation  and  anion  of  complex  is  measured  by conductivitymeter  correspond to 1: 1.  The thermal analysis  is determined  by Differential Thermal  Analyser  (DTA)  indicate  that  complex  contain  some  hydrate,  thus  possibility formula  of  complex  is  [Ni(hyd)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]SO<sub>4</sub>.H<sub>2</sub>O (Diaquadihydantoinnikel(II) sulfat monohidrat).  Data  of  infra  red  spectra  show  a  shift  of  N-H  group  and  tertier  N  group 138 absorption  and  indicate  this  functional  group  coordinated  to  the  center  ion.  Magnetic Suscepbility measurement show that the complex is paramagnetic with μ<sub>eff</sub>  = 3.2  BM. The UV-Vis spectra appear do to 2 transition peak on  λ  =  740 nm (13,513 cm<sup>-1</sup>) and  405 nm (24,691 cm<sup>-1</sup>).  The peak indicate that structure of complex is octahedral with transition <sup>3</sup>A<sub>2g</sub>→ <sup>3</sup>T<sub>1g</sub>(P)(ν<sub>2</sub>) andtransition <sup>3</sup>A<sub>2g</sub>  → <sup>3</sup>T<sub>1g</sub>(F)(ν<sub>3</sub>). One peak which  is  not appear is transition <sup>3</sup>A<sub>2g</sub> → <sup>3</sup>T<sub>2g</sub> (F)(ν<sub>1</sub>) which also estimate of 10 Dq (Δ<sub>0</sub>) is 103.615 kJ mol<sup>-1</sup>.</p>

scholarly journals SYNTHESIS AND CHARACTERIZATION OF COMPLEX DIAQUADIHYDANTOIN NICKEL(II) SULFAT MONOHIDRAT)

2016 ◽  
Vol 10 (2) ◽  
pp. 137
Author(s):  
Sentot Budi Rahardjo ◽  
Surya Dewi Marliyana ◽  
Nur Asih Siwi Wulandari
Keyword(s):  
Thermal Analysis ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Functional Group ◽  
Synthesis And Characterization ◽  
Infra Red ◽  
Thermal Analyser ◽  
Differential Thermal Analyser

<p>The purpose of the research is to find out the synthesis, formula and characteristic of complex of Nickel(II) with hydantoin (hyd). Complex of nickel(II) with  hydantoin  have been synthesized in 1 : 1 mole ratio of metal to ligan in methanol.The formula of  complex which are predicted from analysis of % Ni in complex by Atomic Absorption Spectroscopy (AAS) is Ni(hyd)<sub>2</sub>(H<sub>2</sub>O)<sub>3</sub>.SO<sub>4</sub>.  Ratio  of  cation  and  anion  of  complex  is  measured  by conductivitymeter  correspond to 1: 1.  The thermal analysis  is determined  by Differential Thermal  Analyser  (DTA)  indicate  that  complex  contain  some  hydrate,  thus  possibility formula  of  complex  is  [Ni(hyd)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]SO<sub>4</sub>.H<sub>2</sub>O (Diaquadihydantoinnikel(II) sulfat monohidrat).  Data  of  infra  red  spectra  show  a  shift  of  N-H  group  and  tertier  N  group 138 absorption  and  indicate  this  functional  group  coordinated  to  the  center  ion.  Magnetic Suscepbility measurement show that the complex is paramagnetic with μ<sub>eff</sub>  = 3.2  BM. The UV-Vis spectra appear do to 2 transition peak on  λ  =  740 nm (13,513 cm<sup>-1</sup>) and  405 nm (24,691 cm<sup>-1</sup>).  The peak indicate that structure of complex is octahedral with transition <sup>3</sup>A<sub>2g</sub>→ <sup>3</sup>T<sub>1g</sub>(P)(ν<sub>2</sub>) andtransition <sup>3</sup>A<sub>2g</sub>  → <sup>3</sup>T<sub>1g</sub>(F)(ν<sub>3</sub>). One peak which  is  not appear is transition <sup>3</sup>A<sub>2g</sub> → <sup>3</sup>T<sub>2g</sub> (F)(ν<sub>1</sub>) which also estimate of 10 Dq (Δ<sub>0</sub>) is 103.615 kJ mol<sup>-1</sup>.</p>

scholarly journals SYNTHESIS AND CHARACTERIZATION OF TRIAQUATRISULFISOKSAZOL COBALT(II)SULPHATE.nHYDRATE COMPLEX

2010 ◽  
Vol 6 (3) ◽  
pp. 275-279
Author(s):  
Sentot Budi Rahardjo ◽  
Abu Masykur ◽  
Melin Puspitaningrum
Keyword(s):  
Thermal Analysis ◽  
Magnetic Susceptibility ◽  
Electric Conductivity ◽  
Synthesis And Characterization ◽  
Cyclic Voltammograms ◽  
Infra Red

Complex of cobalt(II) with sulfisoxazole (slfs) has been synthesized in 1 : 4 mole ratio of metal to ligands in methanol, the complex formula is [Co(slfs)3(H2O)3]SO4.nH2O. The electric conductivity of the complex in methanol correspond to 1:1 electrolyte. The thermal analysis indicates that complex contain some hydrates. Magnetic Susceptibility measurements show that the complex is paramagnetic with µeff = 4,60(9) BM. Infra red spectra indicates that the primary N-H group coordinated to the center ion, it is signed by a shift of primary N-H group absorption. UV-Vis spectrum appears one peak at λ= 515,5 nm (19.342 cm-1) due to transition peak of 4T1g (F) → 4T2g (P) (ν3) overlay to transition peak of 4T1g(F) → 4A2g(F) (ν2). The value of 10 Dq (Δo) that corresponds to transition 4T1g → 4T2g (n1) is 95,29 kJ.mol-1. Cyclic voltammograms have revealed quasi reversible. The complex probably is octahedral.   Keywords: cobalt(II), sulfisoxazole, complex, paramagnetic, octahedral

Characterization of a high-pressure microdischarge using diode laser atomic absorption spectroscopy

2002 ◽  
Vol 11 (4) ◽  
pp. 476-483 ◽  
Author(s):  
C Penache ◽  
M Miclea ◽  
A Br uning-Demian ◽  
O Hohn ◽  
S Sch ssler ◽  
...  
Keyword(s):  
High Pressure ◽  
Atomic Absorption ◽  
Diode Laser ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy

scholarly journals Pengaruh Variasi Jenis Pelarut pada Rendemen Sintesis Senyawa Kompleks Bis-Asetilasetonatodiaquonikel(II)

2015 ◽  
Vol 18 (1) ◽  
pp. 29-33
Author(s):  
Novia Mintari ◽  
Suhartana Suhartana ◽  
Sriatun Sriatun
Keyword(s):  
Fourier Transform ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Infra Red ◽  
Ft Ir

Sintesis Senyawa Kompleks Bis-Asetilasetonatodiaquonikel(II)  telah dilakukan. Penelitian ini bertujuan untuk untuk mensintesis senyawa kompleks bis-asetilasetonatodiaquonikel(II) ([Ni(acac)2(H2O)2]) dengan menggunakan pelarut metanol, etanol dan aseton serta membandingkan pengaruh pelarut yang digunakan terhadap hasil sintesis senyawa kompleks. Senyawa kompleks [Ni(acac)2(H2O)2] dibuat dengan memodifikasi metode Pawlikowski dengan perbandingan mol ion pusat dengan ligan adalah 1:3. Karakterisasi senyawa kompleks dilakukan menggunakan Fourier Transform-Infra Red (FT-IR), Atomic Absorption Spectroscopy (AAS), dan Spektrofotometer UV-Vis. Hasil FTIR menunjukkan adanya gugus O pada asetil aseton yang terkoordinasi pada ion pusat Ni2+ membentuk kompleks [Ni(acac)2(H2O)2]. Spektra UV-Vis menghasilkan serapan maksimum untuk kompleks [Ni(acac)2(H2O)2] dalam pelarut metanol pada panjang gelombang 294,5 nm, dengan energi transisi sebesar 406,72 KJmol-1, dan rendemen 19,26%. Kompleks [Ni(acac)2(H2O)2] dalam pelarut etanol memiliki panjang gelombang maksimum pada 294,5 nm, dengan energi transisi sebesar 406,72 KJmol-1, dan rendemen 18,69%. Sedangkan kompleks [Ni(acac)2(H2O)2] dalam pelarut aseton mempunyai panjang gelombang maksimum pada 293 nm, dengan energi transisi sebesar 408,80 KJmol-1, dan rendemen 16,99%.

scholarly journals Efek Komposisi Bioadsorben α-Keratin/Alginat Terhadap Kapasitas Adsorpsi Logam Berat Besi (Fe)

2018 ◽  
Vol 14 (2) ◽  
pp. 323
Author(s):  
Elsa Ninda Karlinda Putri ◽  
Syahna Febrianastuti ◽  
Easy Vicky Maylinda ◽  
Ganjar Fadillah ◽  
Candra Purnawan
Keyword(s):  
Electron Microscopy ◽  
Heavy Metal ◽  
Scanning Electron Microscopy ◽  
Fourier Transform ◽  
Atomic Absorption ◽  
Adsorption Capacity ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Infra Red ◽  
Scanning Electron

<p>Penelitian terkait pengaruh komposisi α-keratin/alginat terhadap kapasitas adsorpsi logam berat besi (Fe) telah dilakukan. Penelitian ini bertujuan untuk mengetahui karakter dan optimasi adsorpsi dari bioadsroben komposit α-keratin/alginat terhadap daya serap logam berat Fe dalam larutan air. Proses preparasi bioadsorben α-keratin/alginat dilakukan dengan metode enkapsulasi pada larutan CaCl<sub>2</sub> 2% (b/v). Karakterisasi bioadsorben dilakukan menggunakan <em>Fourier Transform Infra-Red</em> (FTIR),<em> Scanning Electron Microscopy</em> (SEM)<em> </em>dan proses adsorbsi dilakukan dengan metode<em> batch</em>. Hasil karakterisasi IR pada komposit α-keratin/alginat menunjukkan terdapatnya serapan pada bilangan gelombang 1140-820,75 cm<sup>-1 </sup>yang merupakan reduksi gugus <em>mannuronate</em> dari alginat. Hal ini menunjukan bahwa alginat telah terikat secara kimia dengan α-keratin. Adsorpsi logam Fe (3 ppm) dalam larutan dilakukan dengan variasi komposisi α-keratin:alginat secara berturut-turut sebagai berikut 1:1; 1:2; 1:3; 2:1 dan 3:1 (b/b). Hasil pengukuran menggunakan <em>Atomic Absorption Spectroscopy</em> (AAS) dengan metode kurva kalibrasi standar menunjukkan komposisi optimum penyerapan logam Fe (3 ppm) adalah 1:2 dengan kapasitas adsorpsi sebesar 205,64 mg/g. Hasil karakterisasi SEM pada komposit α-keratin:alginat komposisi 1:2 (b/b) yang memberikan kemampuan adsorpsi yang terbesar menunjukkan bahwa permukaan rambut manusia tidak tertutup secara menyeluruh sehingga gugus aktif dan celah-celah kecil pada komposit dapat berperan dalam proses adsorpsi logam berat besi (Fe).</p><p><strong>The </strong><strong>Effect </strong><strong>o</strong><strong>f α-Keratin</strong><strong>/</strong><strong>Alginate Bioadsorbent Composition </strong><strong>on</strong><strong> </strong><strong>the </strong><strong>Adsorption Capacity </strong><strong>o</strong><strong>f Heavy Metal </strong><strong>of Iron </strong><strong>(Fe)</strong><strong>.</strong> A study of the influence of α-keratin-alginate composition on the heavy metal adsorption of Fe has been performed. The research aims to determinate the character and adsorption optimation of α-keratin/alginate composite for Fe adsorption in aqueous solution. The preparation α-keratin/alginate composite was conducted by encapsulation method in CaCl<sub>2 </sub>2% solution. The characterization of bioadsorbent was performed by Fourier Transform Infra-Red (FTIR), Scanning Electron Microscopy (SEM) and adsorption process was conducted by batch method. The FTIR result on α-keratin/alginate shows that adsorption at wavenumber of 1140-820.75 cm<sup>-1</sup> which indicates the reduction of mannuronate group from alginate. This suggests that alginate was chemically bound with α-keratin. The adsorption of Fe (3 ppm) in the solution was carried out with variation of composition α-keratin:alginate of 1:1; 1:2; 1:3; 2:1; and 3:1 (w/w). The measurement using AAS (atomic absorption spectroscopy)<em> </em>with standar calibration curve method showed that optimum composition of Fe (3 ppm) adsorption was 1:2 (w/w) with adsorption capacity of 205.64 mg/g.  The SEM result on α-keratin/alginate 1:2 (w/w) which had the greatest adsorption capability shows that the surface of human hair was not completely closed thus the active groups and pores can play a role in the process of adsorption of heavy metal iron (Fe).</p>

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