CHEM2090-LECT7 - log “1130! W?! F‘lrvtafflfiseol by...

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Unformatted text preview: log “1130! W?! F‘lrvtafflfiseol by Lewis in Willa 'QQme v}: wifk H16 alechm-n POUW‘ bonol (faking 'Wwd’ Cid-ems bond in moiecuies by sharing £lec+rons A -- 8 “Hana padre? e'fl Single banal A: B -—-’ +No Pairs o? e" 0100le b000, Ag 3 ‘9 Hnree “ " " +r‘iPIe. bond ifs) EleCH‘cbnsan‘chd' don"? banal cur-e lone Pairs omol 1e.me +0 one cad-om. Oc+e+ Rule - Each 03mm £n a molecule, ACquires e‘edrons \oy San‘mS ‘Hnem in bonds un+i| each 'od-om has 8'6,” surrounalmg E+ (cal-e1) Vodence. orbH—ais ¥vr n=2 has Q5 52?), 25‘ 2’92 anal 190+ Re" in eat}? orbikfl) finch eleci'ron Cont-‘SUF‘AHOO is [Me] or a S'Rub‘e, con-CCSUPOA'FOI’). “Works 5854 fior perfocl :2 element Camel H) _ | taste 9:”: Hydrogen valence orbiqu LewES S+roc3m£as D Sum Hue build Vadence, eledmns ofi a.“ mama-add one a” ¥or every hef hegochve charge, sub+mc+ One (lo? each he+ PosiHve charge, ‘ 9.) NrH'e olowh ad'oms , elechroPosich in can hit“) such W1ec+r0wfie3q+iv€ on 'Hmé. ouhflej hyolragens ads-,0 filfidfieflsfind +0 be +ePMEnoL‘ fl Banal od-oms And add [one pair‘s +0 an) SodiS£y H16 ode’r cw? eadw ockam b) minimize grin/pal chM‘SE a) ne’r necboddve, charge, shoulol be on an etecmnegmh‘ve. Ox‘rbm , he+ pcslh‘ve, churaa on cm ciec+ropo::4}—{ve. GUI-om Formal‘ Charge: 2 Valence ox a given Odom in Q molecde mxnus +\«afi= :91?- lane pod? eieflrrons minus 0S1 boflclihci) 3') W Same Q5 :‘1‘5 0; bonds Emrnple‘. BE: Cox‘cuioJ-e fib¥ m!ence e,— doeb Mg. 8 aon‘fi—rieri—cs 3 l F " 7 *4 =42 +1 =32? ‘7 .- 4! Equs "F' Tom: 32 e," o‘ '4 to ‘ ‘E Baffin has OCB‘i’ ‘90de («5/ F how pi“ in lone, pairs amgncl F: COuh+ filo? eledrons ass‘asned +0 BE: in we Lewis $+TUC+ur€ +0 be Sure i-‘r equaJs 39. 6— (£310? mleme 6.) EC. gale. PH 7 - (0 —fl = O 7* ¢ “Since- .prc'nh ("gem tone "'F paipe‘ bfind B —> 3 - L1 = —I E) has 4M9, hecb. fiof‘mai Charge, H1903?» H PS More gleckbposHive b/c f+ howl +0 have %6 may Qar‘rrml‘ charge once Rules flaw: were mfisfl‘ea’ .— NO3 hi’rm’fe m— N—» 5 0‘9 39196: = '36" nccjfihmaea I = I 0‘ niapcco)(o valeting-0:9:Qqe 'fi) €- _lr //v{'d _‘ field) (a {C}; I "(9 L96.- £ '-I Hombde F600) 5 --| Liprtlmbcnds ‘H 6.0. ‘ Bond ode-FC— (Bu/erase nurhber‘ o?- elec-ir‘of) pours ' beheefl o’l a'bms in ex molecule "Corr‘ela’rts w‘flh bond Wenglh omcl bond lengfifi 8.0. T Bond Sh‘enfi'i'h Banal [ency’h if r— 1—- 1 /7 B_C)l : ‘0“ FvB—F I I F $0? nfirasre f; 06) 06 ea I, I ,Nxo 6*? //v.‘: H N3 90 a 30 O— 0/7 oé. +hese cure resonance s+r~uc¥ure3 gar ni+m+e I The. Bank lenS-Fhf, are +he fame -For every /V‘O' 8‘15 be 01- 4'2 res name B on__ 2 a OSiF'Ufhre l .l ' ‘ NR qfi o¥ reSor‘tmce Sfiucfim‘lg 0' to All L’AI 30.7-19.4' I+| “ Ll 3 3 1..- 3011 SO; hi flu W (S is habéah-Egpergeal a) "Abms €11 Per-Pad 3 or higher‘ can mol ‘rheir‘ oc+e+$ SC") +‘he,\/ can accommodotfe >Lfe— Fairs wexpomd JAme oc+e+ 1b minEmu‘ze flormal chug: SOHQ‘ F Lew3s S‘h‘oc-A—ure will aimc$+ always be, wit": 67 w Oxyaeh will almosf always be Ldrl‘i’ki'n as gone-+330 :b:EEC.=—l H I we ‘ '- r—tc. co~4=+2 5/ o I 9.. ‘ :9”?—§§39 9,5034! :0 we.) 50 £or 801:" +0 heui'rali‘ae SUI-PUFS pea-{Hue charge and neu+mlize CL Qew 0? HM: par-ma) charges W» jg... Qr-S—b: B.o,=_’.3>__ l “9 9.) No+ Pm-Hm #flmer/QQUQOIO Abbe! Prize wmner Cross ~CouPl;n<5 {:‘or‘ moddhfi C~C bonoLS Paton”; NQSESM} "'9 R—X + Ri-‘Zh—Xcm SHUZUki ac“: X_Zn ’x eck L PA R —>< + R’-—e(oR)3 __3 R_ R: SEW,” 50+ was Boron Now back +0 our reguiw\y scheduled class miem‘almrtlm mkrfil: aflh‘ons‘.6$= . 13 Expansion of: Oc+e+ Rule: och:va are larger Qréem‘col 3 or ‘afSEf 5‘6men+§>, This allows ‘1‘an expansion “it: happen gr; :3: ,F/v Ec‘6'r>:o .. EC. 5 :O =E-S~——Er ‘3 / *‘7‘ a) I Y‘COmF‘E‘hg Oc+e+ if}; no hrma‘ Charges 501’ 3 BE n‘fdtBL/rfic'cjg has no Compie+e oc-lef‘. 7771‘s “ o lends +0 [+5 map-Hva +0 womfin5 ano-Phef‘ [one pad!" NHS Hflh {Webf‘litnl wf‘ (possibiy comm?) «cram ammercolypgunJ) I 5'” he Pmr ‘ H bunoneF possibb Leigh‘s S-I-Tochare 0-; Big !_ J, if: 6" E55662“ ovexui Tram! chmge Is 7 (,9 :f—éé‘“'F.C.(B3=—I O,wh.‘ck1‘s corracfr but F—téy .I‘VWL; H no+ H16 domr‘hcde-Cofih '0}: p H " *Hne, k‘B’hN e‘amegxh‘sre, F Hus ck {Mai-Hue. F. C. 3) Odd number a? awakens ‘I‘emove acid 6- draw Lewq‘s s’rr-uchue “acid back 6' +0 mfnl‘mfze EC; 61) -- AF.C.(k>)=O A/ H e“ W=O 0 g )o - now add back 6— +0 mim‘mi‘ze tCqu = N l' ._ EC' go? 103" XV *0 f“ “10m I ’ ion Ec'a’ib Kip'c’é’fio gpradid'i'ng Shapes Fran-n Lewis S+ruc+vres VSEPR ‘ Valence Shell Eieohron Pair Repulsfon went). I) gléoi-rons {n lone pair: (LP) or banal-‘03 pafr‘S (by) 0h5+FIbU+C Themselves in $530.56 +0 mt‘na‘mn‘ze. repulsiont 3.) Shape I‘s based On a “base 5+r~m~;{ww.=:Ir which I‘s ole’rermined by #16 number 0? elec+ron Brow/0S An eiecr-H‘Dfi gram)? 1‘5 a) lone pod!" b) bond # single , doubla orwwe each Courfi' as I (Bled—nan 3) [one yaks are no+ vfsualfzeot 5%) repulsion LIL-LR > LP*-8P> BP-—BP b}: c“ in LP are cu“)! loamlheol on cenh‘al odom whereas 6— in BP are par‘h‘qlly localized on Hue, banalims Odom if? I’rro " 431L13— O (13%;; I AXQE 61 AXBE Si VSEPR Ax; I AXE' leg Axg Axef i80° Sbgpfi Han linear X914“: X +r;‘5°”“' C1 4:130" x /\.../\X a, Uh!“ "3 //A\ X x._./ X < 130° I [‘06ch _ (on! mong :0 Ha! Molecule.) X l a a was .2 ’r *‘N ‘ x Xfigggl wedge shows Odom coming ou-‘r of: panic, +rf3anol Pyramfahf ‘I" +e erheolml <IO‘1.5’° a ‘15 ‘ xd'lx < Io X frismol bipymmfalfiixfxcl/Amxz 1:20;: x bl- 90")! x F— (Mkscd X (moms I X;A__: 535+ bpo‘l- LP 0“ ectuii'bn‘n,‘ I355, I glecfmn Grcwg Q VSEPR S—bm X qofim (a o AX, DC‘bhedm‘ X\'>X 0% [33 (a A “5 x/ l“>< " X k . (f x I Axse square wow Mix x a AXL’Ez Square Fianaf‘ ’(‘T/x x/f‘x 0' mm Problem 33+ 69 ~ Due. lO/IS by 52% S£+ 5 " >CMLI I‘S WCM‘HW Sef q >q/f3 I‘s wor+h IOPH. W Pre}.‘m — mean. Gilda/Ho (61903—9 B came/e s’fol. Olav. 13/110 Hash <17/no (82:90) < Make a. plan Beadiine Qbr Reg“.qu reques+10c+z>ber [5% 8X) :C'; #1; o£ valence e.— -—" 3Q e— , TodincCI) mofi ..C"‘I:° Clecfroposfh've. a. I r- )_ ,, \ e) r.C.(C| -O :4} "I — 91:0 0 I \.. Hair): 7 :C‘l: ‘13.. ‘ ‘o 11: O“: e‘efln'on STDUPS: “'9 base Shape. F5 oc+cxkealra| pu+ [one Pairs on abe Fashions Cl / .L<c| Square planar 023842. 2N3“- a No wdence c" Fm‘l‘m' aha-(3C5 /. 9‘2.» 69"” “*9 a ..@ Mowmfg e: :N =wN-:_—_ N; :NE—‘E-gu-fi/y.’ 6-9:!kvfl/VENV: wigs“ I300 Sk‘t‘b‘t Egg; N=/v--—4v: e—e w—N 24/ 63' ’t—f "' U GD ‘ L10 mo“ 3 awn-95 mun! LerfiruJ ado-h True bonol angle fififljt’oqo so fine above Lewis. swag-fares J ’r smack befiuaUErafjeg +9 363 h‘ue w5+mc+ure A403? wn¥flbu+§n05 €33rruc+vre§ % OLFa {hos-e wf+h [80° bond angle Ammanme Di'c Humid ffi“) chromi‘r—imm oxjole CF20? “.9 CFO-€03 + r T Nu; Cr-of‘ *3 0 7‘ 1% '3 +¢ ...
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This note was uploaded on 03/01/2011 for the course CHEM 2090 taught by Professor Zax,d during the Winter '07 term at Cornell University (Engineering School).

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CHEM2090-LECT7 - log “1130! W?! F‘lrvtafflfiseol by...

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