Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Coordination complexes[CoCl2(en)2]Cldichlorobis(en)cobalt(III) chlorideCoClClNNNNtrans-CoClNNClNNcis-CoClClNNNNCoClNNClNNsameenantiomersCoordination complexesNa[FeCl4]sodiumtetrachloroferrate(III)coordination number 4tetrahedralsquare planarFeClClClCl(rare)no geometric isomersoptical isomers[Pt(NH3)2Cl2]diamminedichloroplatinum(II)PtClClNH3NH3PtClClNH3H3Ncistransno optical isomersBondinglocalized electron model octahedrald 2sp3square planar dsp2tetrahedral sp3linear sppredicts shapesdoes not predict colorsmagnetic propertiesCrystal Field ModelCrystal Field Modeldz2dx2-y2dxydyzdxzelectrostatic repulsion ligand lone pair e-d-orbital electronscrystal field splittingcolorscolors400 nm430 nm490 nm560 nm580 nm620 nm800 nmE = hc= hdz2dx2-y2dxydyzdxz[Ti(H2O)6]3+t2gegh510 nmredspectrochemical seriesCN-> NO2-> en> NH3> H2O> F-> OH-> Cl-> Br-> I-strong fieldlarge weak fieldsmall as charge increases,  increasest2gegt2gegspectrochemical seriesCN-> NO2-> en> NH3> H2O> F-> OH-> Cl-> Br-> I-strong fieldlarge weak fieldsmall [Zn(en)3]2+colorlessSc3+d10d0high spin d5weakly coloredcolorslow spin high spincolorscoordination number = 4dz2dx2-y2dxydyzdxztet = tetrahedral49octalways high spinsquare planardxzdyzdz2dxydx2-y2colorscoordination number = 2 lineardz2dyzdxzligands along z-axisdx2-y2dxymagnetic propertiescompounds with unpaired e- paramagneticGuoy balancespectrochemical seriesCN-> NO2-> en > NH3> H2O > F-> OH-> Cl-> Br-> I-strong fieldlarge weak fieldsmall [Fe(CN)6]4-[Fe(H2O)6]2+egt2gegt2gdiamagnetic paramagneticmagnetic propertiescompounds with unpaired e- paramagneticGuoy balancespectrochemical seriesCN-> NO2-> en > NH3> H2O > F-> OH-> Cl-> Br-> I-strong fieldlarge weak fieldsmall for ≤ 5 unpaired e- (BM) = n(n+2)[Fe(H2O)6]2+egt2gµ = √24µ = 4.90Coordination Complexesmineralanimalvegetableyesyesyes20 QuestionsFe2++ O2strong field- O2weak fieldred