Crystallography Lecture Notes PDF
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Uploaded by AttentiveSacramento1253
Dr. wafaa soliman
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Summary
This document is a lecture on crystallography, detailing different crystal systems like orthorhombic, tetragonal, monoclinic, and triclinic, along with a discussion of their elements of symmetry and crystal forms. Key topics covered include crystallographic elements and the relations between axes (a,b,c).
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Crystallography Prepared by: Dr. wafaa soliman For second year chemistry branch 1- Orthorhombic system Elements of symmetry Axis: 3 (a,b,c) 3 Planes: 3m Center: +ve Crystalographic elements ( a ≠ b ≠ c ),( α = β = δ = 90 ). Crystal forms 1- Basal pinacoid..…(001) 2F 2- Side pinacoid..…...
Crystallography Prepared by: Dr. wafaa soliman For second year chemistry branch 1- Orthorhombic system Elements of symmetry Axis: 3 (a,b,c) 3 Planes: 3m Center: +ve Crystalographic elements ( a ≠ b ≠ c ),( α = β = δ = 90 ). Crystal forms 1- Basal pinacoid..…(001) 2F 2- Side pinacoid..…(010) 2F 3- Front pinacoid..…(100) 2F 4- Orthorhombic prism..…(hk0) 4F 5- a- dome..…(0kL) 4F 6- b- dome..……(h0L) 4F 7- Orthorhombic bipyramid…..…(hkL) 8F 2- Tetragonal system Elements of symmetry Axis: 5 ( 1c , 2a,b , 2ب ) ينا لمحاور Planes: 5m Center: + ve. Crystalographic elements ( a = b ≠ c ),( α = β = δ = 90 ) Crystal forms 1- Basal pinacoid..…(00L) 2F 2- Tetragonal prism first order….(hh0) 4F 3- Tetragonal prism second order….(h00) 4F 4- Ditetragonal prism………(hk0) 8F 5- Tetragonal bipyramid first order…….(hhL) 8F 6- Tetragonal bipyramid second order….(h0L) 8F 7- Ditetragonal bipyramid ……….…….(hkL) 16F 3- Monoclinic system Elements of symmetry Axis:1b Planes: 1m Center: + ve Crystalographic elements ( a ≠ b ≠ c ) ,( α = δ = 90 ≠ β > 90 ) Crystal forms 1- Basal pinacoid…(001) 2F 2- Side pinacoid…..(010) 2F 3- Front pinacoid…..(100) 2F 4- hemi b-dome.....(h0L) 2F 5-Monoclinic prism….(hk0) 4F 6- a-dome..…..(0kL) 4F 7- hemi-bipyramid…(hkL) 4F 4- Triclinic system Elements of symmetry Axis: no axes Planes: no planes. Center: + ve Crystalographic elements ( a ≠ b ≠ c ) ,( α ≠ β ≠ δ ≠ 90 ) Crystal forms 1- Basal pinacoid……(001) 2F 2- Side pinacoid…….(010) 2F 3- Front pinacoid….(100) 2F 4- hemi prism…...(hk0) 2F 5- hemi a-dome..(0kL) 2F 6- hemi b-dome.....(h0L) 2F 7- quarter bipyramid..(hkL) 2F
