Sains Ma1aysiana 25(3): 61-67 (1996)                                                                           Sains Fizis dan Gunaan/

                                                                                                                                   Physical and Applied Sciences

Kajian ke Atas Kompleks Trifenilfosfinoargentum(I)

(A study on triphenylphosphinosilver(I) complexes)

Abdul Hamid Othman, Ibrahim Baba

Yang Farina Abdul Aziz & Norman Awang

Jabatan Kimia, Universiti Kebangsaan Malaysia

43600 UKM Bangi Selangor D.E. Malaysia

ABSTRAK

Beberapa kompleks trifenilfosfinoargentum telah disintesis, iaitu bis [asetatotrifenilfosfinargentum (I)], I, laktatotris (trifenilfosfin) argentum (I), II dietanolditiokarbamatobis (trifenilfosfin) argentum (I), III dan metiletanolditiokarbamatobis (trifenilfosfin) argentum (I), IV. Selain daripada pencirian dengan kaedqh spektroskopi, struktur kompleks I-III telah ditentukan dengan kaedah pembelauan sinar-X hablur tunggal. Kompleks asetat terhablur sebagai dimer dengan argentum menunjukkan geomertri 4-koordinat, sementara kompleks laktat adalah monomer dengan argentum berkoordinatan lima. Dalam kompleks dietanolditiokarbamat argentum berkoordinatan empat dengan panjang ikatan   Ag - S, 2.6822 (13) dan 2.5991 (12) Å menunjukkan dua mod pengikatan yang berbeza dengan ditiokarbamat.

ABSTRACT

Several triphenylphosphinosilver (I) complexes, viz. bis [acetatotriphenylphosphineargentum (I)], I, lactatotris (triphenylphosphine) argentum (I), II, N, N-diethanoldithiocarbamatobis (triphenylphosphine) silver (I), III, and N­ethanol, N-methyldithiocarbamatobis (triphenylphosphine) silver (I), IV, have been prepared. Apart from characterization by spectroscopic methods, the structures of I-III, have been characterised by single-crystal x-ray diffraction methods. I crystallized as a dimer with a 4-coordinate geometry around the silver atom, while the lactate complex is a monomer with a five-coordinate silver atom. In the four-coordinate complex III, the Ag - S bond distances are 2.6822 (13) and 2.5991 (12) Å indicating different modes of bonding to the dithiocarbamate ligands.

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