Submitted on: 26 October 2011.
Revised on: 24 November 2011.
Accepted on: 18 December 2011.
___________________Journal of Saudi Chemical Society
Submitted on: 25 December 2022.
Revised on: 08 March 2023.
Accepted on: 18 April 2023.
___________________Journal of Saudi Chemical Society
http://reply.papertrans.cn/2/192/19191/19191-13.png
http://reply.papertrans.cn/2/192/19191/19191-14.png
Submitted on: 27 June 1999.
Revised on: 01 October 1999.
Accepted on: 16 October 1999.
___________________Journal of Saudi Chemical Society
Submitted on: 03 November 2002.
Revised on: 18 January 2003.
Accepted on: 17 February 2003.
___________________Journal of Saudi Chemical Society
Submitted on: 30 April 2007.
Revised on: 06 July 2007.
Accepted on: 17 July 2007.
___________________Journal of Saudi Chemical Society
Submitted on: 17 July 1998.
Revised on: 22 October 1998.
Accepted on: 26 November 1998.
___________________Journal of Saudi Chemical Society
http://reply.papertrans.cn/2/192/19191/19191-19.png
http://reply.papertrans.cn/2/192/19191/19191-20.png