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PREPARATION AND CRYSTAL STRUCTURE OF CaCl .[OC(NH ) ] | ||
Journal of Sciences, Islamic Republic of Iran | ||
مقاله 5، دوره 3، شماره 2، اسفند 1992 اصل مقاله (183.37 K) | ||
چکیده | ||
Calcium dichloride tetra urea was prepared by the reaction of calcium chloride with urea in aqueous solution. The crystals are monoclinic, a= 7.633, b= 12.45 1, c= 8.118 ?,? = 113.17, Z = 4, space group P 2,/a. The crystal structure was determined by single crystal X-ray methods and refined to R= 0.041. The calcium atoms are coordinated to four oxygen atoms of urea and to two chloride ions. The coordination polyhedra are distorted octahedral | ||
عنوان مقاله [English] | ||
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چکیده [English] | ||
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