无机化学无机化学英文PPT (12).ppt

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1、1.Definition of CFSEThe total energy drop value produced when one d electron move from unsplited d-orbits to splited d-orbits.Crystal Field Stabilization Energy(CFSE)2.Calculation of CFSECFSE=(-4n1+6n2)Dq+(m1-m2)PCFSE=n1Et2g+n2Eeg+(m1-m2)P =n1(-4Dq)+n2(6Dq)+(m1-m2)P =(-4n1+6n2)Dq+(m1-m2)PCalculation

2、 Results:CFSE of Octahedral FieldWavelength and color of visible light absorbed by matterWavelength of absorbed light nmWavenumber of absorbed lightcm-1Colour of absorbed visible light Colour of matter400435435480480490490500500560560580580595595605605750250002300023000208002080020400204002000020000

3、179001790017200172001680016800165001650013333PurpleBlueGreen-blueBluish-greenGreenYellow-greenYellowOrangeRedYellow-greenYellowOrangeRedPurplish-redPurpleBlueGreen-blueBluish-greene.g.:Discussing colour of Ti(H2O)63 The electron configuration of Ti3+is 3d1 and filling pattern is(d)1(d)0.Under the ir

4、radiation of natural light,the electron absorb part of visible light with energy equal to O,and the electron arrangement becomes(d)0(d)1 after d electron jumping.Because the electron transition mainly absorbs green visible light,Ti(H2O)63+is violet red.visible lightDiscussing colour of Mn(H2O)62 The

5、 electron configuration of Mn2+is 3d5.H2O.As a ligand,belongs to a weak field,and d electron filling pattern is(d)3(d)2.When the electrons absorb the bluish-green light from natural light,the d-d transition occurs,and the d electron arrangement becomes(d)2(d)3,so Mn(H2O)62 appears pink.Due to parallel spin of five d electrons of Mn2+,the electron transition probability is small,which makes color of Mn(H2O)62 light pink.visible light