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General Chemistry (Continued)

by: Stephania Powlowski

General Chemistry (Continued) CHEM 1415

Stephania Powlowski
GPA 3.53

Michael Abraham

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Michael Abraham
Class Notes
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This 9 page Class Notes was uploaded by Stephania Powlowski on Monday October 26, 2015. The Class Notes belongs to CHEM 1415 at University of Oklahoma taught by Michael Abraham in Fall. Since its upload, it has received 82 views. For similar materials see /class/229276/chem-1415-university-of-oklahoma in Chemistry and Biochemistry at University of Oklahoma.


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Date Created: 10/26/15
Lecture Notes CHEM1415 Unit 8 Sp 2011 M R Abraham Unit VIII Coordination Chemistry Chapter 22 amp6 Periodic Table Transition Elements amp d Electrons Transition Element Properties gt one oxidation state found Sc exception cations are found in complex ions colored cations magnetic properties d Electrons large of bonding sites octet rule violated 81 Determine the electronic con gurations of transition metals and metal ions Readings 69 Electron Con gurations amp Transition Elements Multiple Electron Atom One El ectrou Atom Electron Con gurations 29cu 5 7 l 7777 27C0 3 iii 26Fe Lecture Notes CHEM1415 Unit 8 Sp 2011 M R Abraham Electron Con guration of Mn amp Mn2 lst Transition Series Note all have Ar core electronic Mn 1522522p63523p64523d5 con g where Ar15225 22p 635 23p 6 22 23 24 25 Or 1522522p63523p63d5452 2180 T1 V Cr Mn 4323d1 4323d2 4523c 4s13d5 4523c 2 2 2 6 2 6 5 Mn is 2s 2p 3s 3p 3d 2616 27C0 28Ni 29Cu 30211 4sz3d6 4sz3d7 4s23d8 4sl3d10 4523a Coordination Compounds Complexes 82 Recognize and identify coordination compounds and M L their components f Readings 221 TransitionMetal Ion Ligand LewisAcid 7 Lewis Base lt H26 lt an lt en ltIN02 lt Example 83 Determine oxidation number CMNHQCHCIZ ngt C0NH3CI2 2C1 C l coordlnatlon number orb1tals used 021 6111 Cuiz 3 1n bondlng and geometry of the characterization central metal atom in coordination Oxidation compounds and complexes coordination 2 4 amp 6 Readlngs 221 Geometry linear tetrahedral sq planar octahedral Hybrid Orbitals sp sp3 dspzvdzsp3 Lecture Notes CHEM1415 Unit 8 Sp 2011 M R Abraham Examples Ox Crd Geo Orb CuNH3Cl 1 2 linear sp Amminechlorocopperl 2 3 CKNHQJ N093 3 6 ma d SP 84 Descrlbe the bonding effects HexaamminechromiumHI Nitrate 0f polydentate ligands K3 FeCN5CO 2 6 octa dzsp3 R 22 1 Potassium Carbonylpentacyanoferratell ea lngs 39 ZnNH32C12 2 4 tetra sp3 DiamminedichlorozincH Pten2 Cl2 2 4 sq plnr dsp2 BisethylenediamineplatinumH Chloride Polydentate Ligands Polydentate Ligands 5 6 w CCHz CHrC 1 t 9 Nquot I x Oxa a e u 3 0 2 CiC CHzCHz CHziRIO Q 9 C C i EDTA 0 2 O Nomenclature for Coord Cmpds Name compounds as salts cation before anion 85 Given their formulas name Name ligands before metal ions in alphabetical order COO rdination compounds and not including prefixes Opposite in writing 1 d Name anion ligands with an quotoquot suffix comp eXeS an V39V3939 eg uoro chloro cyano hydroxo Readings 2 2391 Name neutral ligands with molecular name exceptions H20 aqua NH3 ammine CO carbonyl NO nitrosyl Lecture Notes CHEM1415 Unit 8 Sp 2011 M R Abraham Nomenclature for Coord Cmpds Examples Number of ligands indicated by Greek pre x mend di tn39 tetra penta amp hexa Give the correct name for each of the following bis tris tetrakis pentakis amp hexakis coordination compounds or complex ions Oxidation state of metal ion in parentheses in Roman 6L CdNHMCHCIZ numeral If complex ion is negative add ate to name of metal sometimes Latinnames are used C C0CNRSCNj2 Fe ferme Aga1genate Cu cupmte Au aurate Pb plumbate Sn stannate b Feen2N02 2O4 d K2CoCNFSCNj e K3FGCN5 Examples Give the correct chemical formula for each of the 86 Recognize describe and following coordination compounds or complex ions Identify structural Isomers a triamminebromoplatinumH chloride coordination amp linkage and b potassium hexa uorocobaltateIII stereoisomers geometrical and 0 tIiSethylenediami e ickel l optical of coordination complexes d diaquadicarbonylnitritonitrosylvanadiumH Readings 22 2 e tetraamminebromohydroxomanganeseVH sulfate Isomers Coordination Isomers Isomers same formula but different properties 1 Structural different atoms bonded A Coordination Isomers crNH3SSO4Br and CrNH 35BrSO4 B Linkage Isomers II Stereoisomerism same bonds different arrangement Coen3Crox3 and Cren3Coox3 A Geometrical cistrans Isomers B Optical Isomers Lecture Notes CHEM1415 Unit 8 Sp 2011 M R Abraham Linkage Isomers a Geometrical Isomers QM 0 C1 NH 3 C1 C1 r quotNO O 0 Pt 1 Pt 0 H3N C H3N NH3 trans eis nitro nitrito Geometrical Isomers Optical Isomers Nonsuperimposable minor images Cl Cl left hand right hand 39 39 39 39 NHS 39 39 39 39 Chiral species HSN quotNHS HSN C1 Enantiomeis C1 NH3 dextrorotatory d rotates to right levorotatory l rotates to left 1rans eis Detect by rotation of plane polarized light green Violet P1 P 1 39 d L39 h Br 3116 0 arlze 1g t Optical Isomers l H S NH3 Light irlzmg source Sample tube with k solytion of optically A193 07 actlve substance 60 3 quot32er I on l quot i 39a lequotl 39 il au ileas manage in only one plane g r39ze i u39mn Lecture Notes CHEM1415 Unit 8 Sp 2011 M R Abraham Optical Isomers Optical Isomers in Medicine CH3O NCH3 NCH3 HO dextro 0 0 2060 COdeme 0r levo 0 0 2630 methorphan Example Quiz Does CoNH3Bren22 exhibit geometrical isomerism optical isomerism Trans Isomers Cis Isomers 87 Explain spin state and the magnetic and color properties of transition elements Readings 223 Lecture Notes CHEM1415 Unit 8 Sp 2011 M R Abraham 88 Relate and predict electronic structure eld strength A spin state and magnetic and color pmpertles 0f coordmanon properties of coordination COmPlexeS in OCtahedral complexes based on ligand strength tetrahedral and square planar Readings 22 3 environments Readings 223 89 Relate and predict electronic structure eld strength A spin state and magnetic and color Crystal Field Theory amp d Orbitals d orbitals z dxr dd Splitting amp Octahedral Complexes 1 Orbnais z 1 Orbnaks z dxz dy E 99 A1 free with metal ligands Octahedral amp Tetrahedral Splitting Other Splitting Patterns Linear Square Planar Octahedral Tetrahedral dZ2 7 dX2y2 7 7 d 2 d 2 2 z xy 7 7 7 dXy dXZ dyZ dxz g dyz 7 dxy 7 7 dzz dX2y2 7 7d ampd 2 2 7 dZ2 XV X39V 7 7 d amp d 7 7 dXy dXZ dyZ xz yz Co3 in Strong vs Weak Field Co3 is a 3d6 ion 9 largeA eg 4 4 smaHA t29 1 4 4 t29 4 4 4 Strong Field Weak Field Large A Small A Low Spin High Spin 6 C0CN6339 6g C0C163 Lecture Notes CHEM1415 Unit 8 Sp 2011 M R Abraham Co3 in Strong vs Weak Field 9 largeA eg 4 l smaHA t2g 4 7 417 t2g 4quot 4 4 egg C0CN6339 egg C0C16339 diamagnetic paramagnetic Induced magnetic properties determined by of unpaired electrons Field Strength Metals amp Ligands increasing strength gt ltF E lt H2O lt NH3 lt en lt NOz lt Metal Charge 1 lt 2 lt 3 Magnetic Properties Apparatus NaCl H20 Magnetic Properties Magnetic Properties I2 FeCN6439 CoNH363 2 Mnlll Lecture Notes CHEM1415 Unit 8 Sp 2011 M R Abraham Color Color in Vanadium 5 to 2 7 7 47 7 7 7 IA Energy of light absorbed A AE hcA hV Observed color determined by light not absorbed Observed color of absorbed color


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