Sains Malaysiana 33(1): 157-166 (2004)                                                      Sains Fizis dan Gunaan/

Physical and Applied Sciences

Penyediaan dan Kajian Spektroskopi Sebatian Organostanum (IV)

dengan Asid Dikarboksilik

(Preparation of spectroscopy study on organistannum (IV)

compound with dicarboxylic acids)

Yip Faa Win, Yang Farina, Ibrahim Baba & Abdul Hamid Othman

Pusat Pengajian Sains Kimia dan Teknologi Makanan

Fakulti Sains dan Teknologi

Universiti Kebangsaan Malaysia

43600 UKM Bangi, Selangor D.E., Malaysia

ABSTRAK

Kompleks organostanum(lV) terbitan asid dikarboksilik telah disintesis menggunakan trifenilstanum(lV) hidroksida (Ph₃SnOH) sebagai reaktan. Kompleks dihasilkan melalui tindak balas di antara trifenilstanum(IV) hidroksida dengan asid dikarboksilik (asid malonik, suksinik, glutarik dan adipik) menggunakan alat radas Dean and Stark dalam pelarut yang sesuai pada suhu refluks. Kompleks yang disintesis dicirikan melalui analisis unsur C, H dan Sn, kaedah spektroskopi seperti inframerah dan resonans magnet nukleus (RMN ¹H, ¹³C). Penentuan struktur trifenilstanum(IV) suksinat, 2 menunjukkan bahawa setiap anion dikarboksilat membentuk ikatan secara monodentat kepada dua moieti trifenilstanum(lV). Geometri sekitar atom stanum menghampiri tetrahedron. Data spektroskopi semua kompleks yang terhasil hampir serupa dan secara umum boleh disimpulkan semua kompleks mempunyai struktur yang sama dengan 2.

ABSTRACT

Organostannum(IV) complexes derived from dicarboxylic acids have been successfully synthesised from triphenylstannum(IV) hydroxide (Ph₃SnOH). The complexes were obtained by refluxing Ph₃SnOH and the respective dicarboxylic acids (malonic, succinic, glutaric and adipic acids) using a Dean and Stark apparatus in the appropriate solvent. The free ligands and complexes were characterised by C, Hand Sn elemental analysis and spectroscopic methods such as infrared and nuclear magnetic resonance (¹H, ¹³C NMR). Structure determination of triphenylstannum(IV) succinate, 2, showed that each dicarboxylate anion was bonded monodentatically to two triphenylstannum(IV) moieties. The geometry surrounding each stannum atom is close to a tetrahedron. Spectroscopic data obtained for all complexes were found to be similar and thus it may be concluded that all complexes have the same structure as 2.

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