SYNTHESIS, STRUCTURE AND THERMAL PROPERTIES OF GERMANIUM(IV), TIN(IV) COMPLEXES WITH RS-MANDELIC ACID
Germanium(IV) and tin(IV) coordination compounds [Ge(Mand)2(H2O)2]∙2H2O (1), (H3O) [Ge(OH)(Mand)2] (2), [Sn(Mand)(HMand)2] 5Н2О (3) were synthesized for the first time with the RS-mandelic acid. Thermogravimetric analysis of 1-3 shows, that compounds are crystalohydrates. Thermal destruction of 1 an...
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Odessa I. I. Mechnikov National University
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doaj-c87a238e41564f59977f7a2622b7bdac2020-11-24T23:26:38ZengOdessa I. I. Mechnikov National University Vìsnik Odesʹkogo Nacìonalʹnogo Unìversitetu: Hìmìâ2304-09472414-59632018-05-01232(66)182610.18524/2304-0947.2018.2(66).132036132036SYNTHESIS, STRUCTURE AND THERMAL PROPERTIES OF GERMANIUM(IV), TIN(IV) COMPLEXES WITH RS-MANDELIC ACIDE. E. Martsinko0E. A. Chebanenko1I. I. Seifullina2Одеський національний університет імені І. І. Мечникова, кафедра загальної хімії та полімерівОдеський національний університет імені І. І. Мечникова, кафедра загальної хімії та полімерівОдеський національний університет імені І. І. Мечникова, кафедра загальної хімії та полімерівGermanium(IV) and tin(IV) coordination compounds [Ge(Mand)2(H2O)2]∙2H2O (1), (H3O) [Ge(OH)(Mand)2] (2), [Sn(Mand)(HMand)2] 5Н2О (3) were synthesized for the first time with the RS-mandelic acid. Thermogravimetric analysis of 1-3 shows, that compounds are crystalohydrates. Thermal destruction of 1 and 2 is gradational. In the thermal interval 80-160°С an endothermic effect with the maximum at 140°С and weight loss, which corresponds to two molecules of crystalline water, is observed. At 160-220°С two more water molecules are deleted from the inner sphere of the complex. On the thermogram of 2 in the thermal interval 140-240°С the first endoeffect with the weight loss of two water molecules, that are bonded more fixedly, then crystalline ones, is observed. In contrast with 1 and 2, during the heating of 3 in the thermal interval of 80-170°С, an endothermic effect, which is followed by elimination of 5 crystalline water molecules, is observed. Disappearing of ν(С=О) = 1716 сm-1 absorption band and presence of νas(СОО–) = 1690 сm-1 in 1 (pic. 2.4 б), νas(СОО–) = 1688 сm-1, νs(СОО–) = 1323 сm-1 in 2 and νas(СОО–) = 1654 сm-1, νs(СОО–) =1322 сm-1 in 3 shows the presence of bonding between carboxyl group and germanium (tin) in 1-3. The bonding between hydroxyl group and metals is confirmed by presence of ν(С-О) absorption band at 1064 сm-1. Herewith in the spectra of complexes 1 and 2 deformation vibrations С-ОН are absent, and in spectrum of 3 they are presented at 1494 сm-1. The bonding is also confirmed by presence of valence vibrations bands of the Ge-O bond equal 744 сm-1 in 1 and 737 сm-1 in 2, and in the spectrum of 3 by presence of ν(Sn-О) = 567 сm-1. In the spectrum of 2 the clear absorption band at 834 сm-1, which corresponds to the deformation vibrations of Ge-O-H-group, is found. Consequently, germanium is presented in the compound in the hydrolyzed form. The schemes of structures are presented.http://heraldchem.onu.edu.ua/article/view/132036германійстанумRS-мигдальна кислотакоординаційні сполуки |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
E. E. Martsinko E. A. Chebanenko I. I. Seifullina |
spellingShingle |
E. E. Martsinko E. A. Chebanenko I. I. Seifullina SYNTHESIS, STRUCTURE AND THERMAL PROPERTIES OF GERMANIUM(IV), TIN(IV) COMPLEXES WITH RS-MANDELIC ACID Vìsnik Odesʹkogo Nacìonalʹnogo Unìversitetu: Hìmìâ германій станум RS-мигдальна кислота координаційні сполуки |
author_facet |
E. E. Martsinko E. A. Chebanenko I. I. Seifullina |
author_sort |
E. E. Martsinko |
title |
SYNTHESIS, STRUCTURE AND THERMAL PROPERTIES OF GERMANIUM(IV), TIN(IV) COMPLEXES WITH RS-MANDELIC ACID |
title_short |
SYNTHESIS, STRUCTURE AND THERMAL PROPERTIES OF GERMANIUM(IV), TIN(IV) COMPLEXES WITH RS-MANDELIC ACID |
title_full |
SYNTHESIS, STRUCTURE AND THERMAL PROPERTIES OF GERMANIUM(IV), TIN(IV) COMPLEXES WITH RS-MANDELIC ACID |
title_fullStr |
SYNTHESIS, STRUCTURE AND THERMAL PROPERTIES OF GERMANIUM(IV), TIN(IV) COMPLEXES WITH RS-MANDELIC ACID |
title_full_unstemmed |
SYNTHESIS, STRUCTURE AND THERMAL PROPERTIES OF GERMANIUM(IV), TIN(IV) COMPLEXES WITH RS-MANDELIC ACID |
title_sort |
synthesis, structure and thermal properties of germanium(iv), tin(iv) complexes with rs-mandelic acid |
publisher |
Odessa I. I. Mechnikov National University |
series |
Vìsnik Odesʹkogo Nacìonalʹnogo Unìversitetu: Hìmìâ |
issn |
2304-0947 2414-5963 |
publishDate |
2018-05-01 |
description |
Germanium(IV) and tin(IV) coordination compounds [Ge(Mand)2(H2O)2]∙2H2O (1), (H3O) [Ge(OH)(Mand)2] (2), [Sn(Mand)(HMand)2] 5Н2О (3) were synthesized for the first time with the RS-mandelic acid. Thermogravimetric analysis of 1-3 shows, that compounds are crystalohydrates. Thermal destruction of 1 and 2 is gradational. In the thermal interval 80-160°С an endothermic effect with the maximum at 140°С and weight loss, which corresponds to two molecules of crystalline water, is observed. At 160-220°С two more water molecules are deleted from the inner sphere of the complex. On the thermogram of 2 in the thermal interval 140-240°С the first endoeffect with the weight loss of two water molecules, that are bonded more fixedly, then crystalline ones, is observed. In contrast with 1 and 2, during the heating of 3 in the thermal interval of 80-170°С, an endothermic effect, which is followed by elimination of 5 crystalline water molecules, is observed. Disappearing of ν(С=О) = 1716 сm-1 absorption band and presence of νas(СОО–) = 1690 сm-1 in 1 (pic. 2.4 б), νas(СОО–) = 1688 сm-1, νs(СОО–) = 1323 сm-1 in 2 and νas(СОО–) = 1654 сm-1, νs(СОО–) =1322 сm-1 in 3 shows the presence of bonding between carboxyl group and germanium (tin) in 1-3. The bonding between hydroxyl group and metals is confirmed by presence of ν(С-О) absorption band at 1064 сm-1. Herewith in the spectra of complexes 1 and 2 deformation vibrations С-ОН are absent, and in spectrum of 3 they are presented at 1494 сm-1. The bonding is also confirmed by presence of valence vibrations bands of the Ge-O bond equal 744 сm-1 in 1 and 737 сm-1 in 2, and in the spectrum of 3 by presence of ν(Sn-О) = 567 сm-1. In the spectrum of 2 the clear absorption band at 834 сm-1, which corresponds to the deformation vibrations of Ge-O-H-group, is found. Consequently, germanium is presented in the compound in the hydrolyzed form. The schemes of structures are presented. |
topic |
германій станум RS-мигдальна кислота координаційні сполуки |
url |
http://heraldchem.onu.edu.ua/article/view/132036 |
work_keys_str_mv |
AT eemartsinko synthesisstructureandthermalpropertiesofgermaniumivtinivcomplexeswithrsmandelicacid AT eachebanenko synthesisstructureandthermalpropertiesofgermaniumivtinivcomplexeswithrsmandelicacid AT iiseifullina synthesisstructureandthermalpropertiesofgermaniumivtinivcomplexeswithrsmandelicacid |
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