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Coordination Compound

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43 views24 pages

Coordination Compound

Class notes
Copyright
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Types of Bond. __ rr @ Covalent Bond (ahasin e738) @_ Coordinate Bond (lone Pais clonote) 7 @ Tonic Bond _(tranzfes of efectron) __ O- bilock metals — > negatve jong ox anion — eo nett) molecules a a ___>_Coordinate bond at te 2 cooxclina Hon compound 2M tamin By, Ceoordinat es -compound of Ca bal) a nine 2k ( Tron. a. E > Chitoste phy 0 s Mg) [1 Cooaidination Compound ax Comptexes : > These Comtains —a_centsia’ metnd ian Zusnnounded by a number of Oppo8it changed _long~ or pyeurtrad ‘molecules: most than ita narmo4 wotency. => The oppositely aoa long _or_peustrad molecules ‘ore 20 Ca ted or Nigand (2) Werner's “Theory. of Coondination compounds. i ‘Primary valence & Secandany volence ar ao feo, reso = wecorsary vasence [co (AH) ¢] CQ, t Povimary vadence. = 42 * Prin valence = axidoHan no. Secondayy Volence = coasidinatian N0- (06. of Higands attached cto. “Centras metal * Co +s xo = +2 - Co=t2 coardination gphexa or entity igus [cone (WH5)5 *GI— counter jon. CoXé) + 5X0 = +1 Gar et | Co = F2] = Potimany valence Secondary olome = +6 The main postulates of Wwesinest'g Theory OF t= _@ The coandination compounds shows two ty pes a tinkage (or valency ) Prrimasty, 8 3 cond ary, eines a ta ? Vobenay ans generally Waniadble ond ane f ts jong a Aancedt Po negitive feaca (ur), ] Cot Ha —> feacg PR re |The 2econdany Volaney ane non. lonigabte i The secondary Valen 1s equal Jo the WF ——A9.0f_ggative! tang ox neurtrad Mmoalecutes | ottached™ +0 control mitel atom Also, -Knoiwn 4 caasidinatHan Alumber asi 7 @ the _ions_4si0up s_attached to central rete adem nk different sbatial —Asinange metal Which _clepends upon ee Dow of, Ai goting acto Max coozdina+tion —o.0- Spatial asstangements ant alao called * a Py ayhedna. abe nasty Valen, 1& non dinectional and — “ eee a9 vetency clirectonak cohich detesmine® the at%uclure complex. > ix_iganda, oppsioachear then ’ pata ct pescctbies ig_generallly formed. bo fs3 [eo WHY] eo SMganda_oppsiaches— tae any sia tneteat aerucime lagen —— aa Tetmahedsiad ~ Squa sus Planer Somé_Imbostont— Tema related — rdinoHon Compound oo 8p heve / —_— counter ion a [Entity — a bs et Wye} ea Z (oe Wig), |? oo pe feor 0, (ans)5} ____Coardinasion Gntity [sphere 2 Cotionic Compiex _(4ve) [Co Convey Put cmrisye 2" d 2 Amianic _comptex Eve) a jag Ga),) , [Fe ea%)s) Oxalate jon coo pO % > New+tnal Comdex — (coca, (NW 45)3] [Pt ca, Wrs),] fe jong pes mode the ollowin a aon ests Bcical atari Soution. = = — - Ha) 5 | C9> (. a = [coct cams] — = => Totek ie Ss a bei Cag funy] ce: —Totad ions= 2 e @ [P+ co, (Hs) ) eo + Tototions = 4 c © [Co wre] ce, : TotoQ jong = 4 _ PO [ed cam),] (0ech] : Total jong = 9 > : i Tatas fena.of ions = 1 + 20. of counter ions | ; ‘ spitated foes mals, Wyieate la thisencees Ay alo, 0B (C000, (atts), ]C_: coor.no =_é (OL[Pd crity),] chy: coor. no = 4 ce Mi {Ha0),}C, 2 coor. no =_¢ @ _[P¢ o,} Seip Coons No = 6 Ou (Nik) ,| 2 Coon. No= 4 —Centsia9_ atom ast_ion:~ The ( ion a1 atom _to_eohich a_no. of neitrah Motec ules hed In coordination, 13 called centras o4om, Be, Ligands t- The Newtsial molecules Hea attached to central atom _in r C60xdInation entity la called Aigan iL, ae : = [Pt co twin). conta atom = Pa Coeds en ty. os Ligand2 = co, NH, Sansa nae s ll dand -——A Jigand 18 oun_adom_om ecute os Yin which i&8 Capobse of _ donating a_baix seed SA ot aceamia Satan > Types of tigand aan Ot 4 —on the bagia of no.— @__Unidentate ox Mohodentate tigand .— _Liganda__tahich_con—caasidinase wwith céntsial cam by single donor atom Eye C-, F Ba; 1, Had Any pH A Coe Ganboay)), Alo (uits10ayl) On? Cydsoxide)_,_Ca— Gyastida_ton) Nb; (hits lon), 02" @xide) 7 Acetate ion (CH; C00), etc @_Bidentate Ligand. The diqand wshich have two donor atoms cto fost caondinate band coith cents al F metal atom —azion. Bgi- COS oy 0,0, (oxalate lor) MH CH, =ClHy — AH, CEthan=|,2- diamine) £5 Ethylene a pe Patydentate wHigands. Tesi dentate ox Gisiidentase) | Thute donoy atoms. z _Teknadenstate: Foun (dominy atoms, =i Pentad en tote: Five donsy atoms _Hexodentote + 3 jx donos atoms. — Donor atom [Phpreviation —Bidentate Ligands Ox. Te toiahentate Ligand. Taienth 5 Tetsia amins Mw talen CH, = CHa = WH ! I ~wH CH 1 ve CH, CH, - NH, Wis Ethytene Diamins ae Tetsiacetateion ERTA Not O C607 on hoo ae =CH,- CH, -V. CNHs CH <007 Homoteptic Hetenoleptic complexes. ti exeaz- If athe centsial asia ee cone et do athe zame type of igands » the complexes asx Known as homoteptic. ic complexes: Tf the central Habe 14 oe aghad if different tyb« of LU ands_:the complexes formed aris known oA hotenotcpHc. en [Co (nH), 8 [coct, (NHy)q} hohotep tie Heterolephic @ Coosidinasion oO ] Coasidinaton- “Pod y hadi Sela aaa yO. gtu centts10 9 @ “Chedation 8 “Denticity — ae _When a _didentote- oro palydenstabe Lee 1g ses 18 eno Gx more donor aetna alo bind the 2ame és nla the apatiad id attached to ths Lo tem On _ @ ATstidentote _) Ambidert Li which. metal atom Fa donor_xitex as called ambidenk sig dz, “Centnol metad_odum or loo paraming ee cute called chat et The no. of chelat incom as ating £3 :- [Pt ct, (en)] —@ Didentohe cholaton (wo dames atom) Pepe. Soi em aie 0 Find athe coosidination See ee | @ [rs _co, (en)] 3 coon nigel ag wee Ka Ys _cooxd, no = 4 oe: @_ [fe (ed+o)]- 2) edd. nolaie ote @. _k [Fe (c,0,' faa no Sa hiae) oe @. [ee (en)y] oe 3 cond. no = fies ey asi Find the HexldaHien— if. contra enctad odors tS, a > @ Eo & axidation no = Of een on 2 > oxidation n0. of Co = Bf oe F275 Oxidation 20 ae een via Gocsidination. Com pound) 6- ‘Alaming of cation dg_dene- fise followed — anion Sf the Com plex ia_newatrad, naming iz _ done _in- oo ong word. l 6 Aaming Ligands by ie pivat in.alpbabetical as jbo naa oxida tion- ‘number aa ee inet sa eee aa epee ces. —_ (nitro onium) — ti nu; {ipa 0,t a to nium) * Newt a2 Ligands axe pared @ CH AH, — Cmethyamine With CH, CHa AH, (ethane =L rt iaesinele * Thasie axe few exceptions | in nang — newtsiad_ Ba 4,0 Gqua) _|@Q_en- (ethane -.2- ~diammine)— @)_N4; Cammine Bee (pystidine)_(ey) —_— wy) ® @ @_pvo_(witsioay) PH phosphine) PIS: (casibary) (Cotte)g? CTatiphenyt — CS (thio casibany, A) cr aa (en) — 2 ~ [es cd, (WH. = ont cobalt Ha : = O. ca et a au = fee ded cobalt (ay -ohdoride a i - | Fr : ae x fy: saftey 3 sion r-(0) shal 32 TUPAC. is i eee “ ee ()_ [Pec Woz) (ovHs)y} 80, Tetsaamminechtoxida nitsito -V- platimurn (v) Sulphate O [Cock We.) Wes),] Fatiaraine Taxriammins dichlorldo nitsite -Ay-cobale (2) A EEE i Ses clea a a tenatc © [euttad, fonda} $0 ae | Tetroammine diaaqua cappex: (IE) Sulphate ee —— eee oe pe eecacna rt totiphany phosphine _chstomiurm (0) Liga d_swbeat —j— Ligand campQex | Se es —4- trig pe €- fe mkige bis =(ethant -l.2-diammine) boi& -(2 thane ~ 1,2 - diammine) __ dmg” + dim aximacte (deg), +- bis ime thyd gayoximata) 6 [Co Ba, (en), | Balam Pea _=> Suche oe : “(Sn)__=! Stan tate Mercury (H9) = Mexcurrate @—k,[Fe ),} Potassium Hexacyanofesrsiate (az) +a Ke Fp ct. Pota2gilum um tedsiachlonidemenctdiate (I) ® ee teeeaiee Sodium teks1aca% be bony Cobaltate. et ’ 41.07 (i _ ee Sajal ak = ; —__ tetsiaammins Bilves (2) dicyanidoasgentate @ Fa _ [co ltts).]- fertem)<] _—hexaammias Leobalt (ar) hax acyan ida chavomate ( (139) alta BE] Tomer ae Two_or mare compounds having 2a.me_mo Masa ox formula but diffest _atouctux asistange ments Of atoms. —_—— = Tgomerxs— bi hs Structural Deomer a Stereoisomers mM — _—$_—__—_—_ > Greamotrical Tx ortexs i é is trad ; G@)_onisaton Leomexs— (ig creesy apHcal Taomexs [Ea Bor tnys] 50,8 [C0 50, Lor), pein irs Be (won g] 50g SSE AESIES cs Bs (nn Co Ba (A/Hs)¢} 504. af Fan s = BQ, (Wt) 5] BX | ads cf tovisationg [ey So, (WH3)¢} + -Bx @ ydorade “Teomexs fe Sodvaste Leomexa. [cx 1,0) Cl, Tex 6 -H120)5}-Cte H,0 bee CB, (H2)g} ca.2H, 6 @ ConsidinadionTaomentiam. [xu [x4] = [4 42) [Xb] [Co (Wita)e] [Cr-Lor)} 8 {co (cn) [Cx (h<} | _@_ Geometsicad lsomexa. | ee Ligands sch ir a fee cee te oe eb posite djacent -to-cach_othex = Compound.) ci Ice lends) a Greomedoricad Laomer& “axa not hourn “hy: Complexes “calth, coordination pumber 243 ever On i al S uo _-planer (HA: x, MAX) % deal Con, x, MAS “Limitation of werner '£ theday += O a do. ond cestolin_motols foo Coordinate caordinatimn —campounds hove seh assronge nents Rs o-difinite © Optical Lsomerxd > Laevoriatatoxy [0- poor (= Dexeaitniony fe fee a — 2 Misvian ima is not aupex ion oaibl cto €ach thts Seon a8 sie ae — ~~ _y “a —e _ => ” = = a oe ” & ae a > » Se ee Soe Taplin thearieemrrdo hi -QNetince Bond oe one fs atal_ field thea oho a faabeehine, — ast b ital eg (MoT) _&. Ligand fied co i mre @ Valence Bond theery (VET) _ -Tetrahedral a i Squaseeplonasy ak : Tetigonad bipysamidad octohedxal Octahedxa Bde dda haat pede 2 dl inner _oxbitad cpr pada: oxbital x Complex Sum \ dener Ligand = oe oxygen dere si 7 Bits Sel" 6 caste Big ne ee aN a Diaragastic tows bia (a) é a wm_y = Jn inia = JoeaD =o RmM — O (coFey faictihedbal_abi pe sped? WFL Go_: [fr] 34°45? ene In Co: {Ar} 34‘ fe ti) EEE) feo: (Ax). 34° Ia eT) ba Bey ere} atic oaledal eS PTT = oh suk evita comptes) (hish api) ap eahor spd } oe *) | @—(wien)™ ri 5 ee a ether yo mio a oe ee i ee eet Signa — oudest asbital complex — eolbg ees pis Zia ene) 1 reer ele ‘Dl 4 = fet) = sis on ; G|- E| " Pte = PRRRRPPRPRR " Exception i= [cu (ats) asCu_[ex) ad’as) O™ oe EE OO Soo —Leuwrs),) fae) 20° minim Eel Tete SX — fester | Gm Spl Seer (e_maserial i Ss ee ere a (pn es ee dal? dt; Ad ddd" d* at —_innen_osbital ieee Walser ashital ae ee ph noe PTAC EEE i ee SAL lav inbelnat) — dsp evordt =4) (s9u0%10 pbhager pest but es 2 eee pariceca kia ee asa (Cound ne i i DD ee ey” Ey | Hi = 2) (Gcfocnal) Li Highspin _* Sp* (coord no =4) (tetra hidra P Parramagrotic ee eee eee | mare PRRPRPRPRPRRFA

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