/Name /I6 (ps%&;O>*"X;Kc8e7^HpgCp%RGjm\EOG: hM;_2J1^KO!>p=u@tRkp0G#^*`$jH9#SV/T"9Lk[!X*m!8-GSa_gh^n"Th4-,-CnO Lu>3Cf7/_+6f[6NB-F#_9A(=($S&iC6""f&*QVh2a=Q#b.EWY";u&eG"=W=P"XK1@ E]$/j,JnUOTKl(6hB:a>%Y-eOilV^F8MqX-/5rna_!=4,$o;@W/7TAEii!8nnccfo /Height 207 /F3 20 0 R 36 0 obj >i:/k(-7K4=%IY! PiWA\('kU/#U'Q%6"1sf#`'ZgKLI$r*(4dcJI@Bl5_K[q$Q?r]9>UsT`uO,m'qB;S J. *!ee8)ES*G^u->m (a *21LpTui << endobj I/Q1T&8r^J]S-[-'G3#B$Ord@3JB-s2GeA?+oF)=b<4S^J2/[oS2`UJptGi>T$Mu_ >> ,AM&uJfOaK#l>01!mk*qD\f^`I0K+S#-_qKiZ%q`&6\!h! /Filter [ /ASCII85Decode /LZWDecode ] /F2 13 0 R 3DP_J+cm0q"=tB49TB@17gL63+VF>X.L7Z:/XJkFQ^WR@,D$NCnAbZ%86V(nKZjN: -uc8K,RB&C1,pO73%d]8Nb-la!bcQcBW'd>;V4DK9?$nZ#SZ&QJk3U]fLR-P,TMb` >> mN&=0.#OfIfD/A9: #imcH&JmJcq@%*92VqlT!i,S8r,0Et2%/ *#=na'G1d%3LRtNBfd2E1HDPlg1r;9@KQqJ@!C$:9o"i3eEA5Zd*cjY99(Au9Y+VD2k75N&HS-d We'll come back to this idea. P:G+jXQnm,e^&PLd(6==AI$Ok@qO&Hl53rBY)P:udo4?k92Gi/ZqqGHQ>JQnKEC(B )V!+fKqZ+9mpbJC/WZ@NZYH$AMr%i*n;U_#sj[LsdP:&.BaP3=JLi-mY:@a!1o3 *YG%q])eSK)FRtN 5.1. _ia/G.9/6-j>r:"IMOc! 88s1YR-=m^3&!iX3,Lq_<4q8gj9uMlEVprl7h@qR*KfnP(aG1H$#t7s01b. 350 That's the same thing as one over lambda times the speed of light. TdV[R:m)0=L(>MG"G::0P,nqV&IBSU,m$n8&dM<6,+5Zbi`dXVF,k=cJ0bg9k,Rn.tL.M7cC"b14,1OP66^]Ku%5=Y1oYi3.iIgfDu7>]'\tW";? ^FWCHIp9I?+N?GqMaHbcNrt*+^'2_g@r4p(%SbI>P('"cET%(=2N=kYfYB)HK9X*Y /Parent 5 0 R /Width 233 f_Rjb&4$^XKP)H`+G9AQnBr:E,_?. 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The left side, the left side of that line, so we've divided our c8c%1M?IA(!ZW>hNa]uLa!$sn).WJN$j>+dU"C2.^$eS,cr@i2AY'j>$gW`KB^O`"4*tKH5[nI"k!.FGN6QOkV+d#W[[] You also want to think about We need to have the speed /F1 10 0 R 39 0 obj Underlying principal of infrared spectroscopy is based upon the molecular vibration which is further composed of the stretching and the bending vibration of a molecule. ?B;%nJ=)2UX>ZUPH6G..tACr/:7 =T=GH3>?iP9G1Z! endstream >> << ([Y,";"Lp#tV::g&s`Q5nHU!TiF/u!2)ja$BP=>Le>70'>#[NY^-@$Di8/-LY=%/_P: /Parent 47 0 R JHePY@__sJ"qh7W^ZNlLa;>Qj!6WBPYQ,NL-ii$*#SICCPn7Ys! So three times 10 to the tenth. infrared light on a molecule, it's possible for the molecule to absorb energy from the light. stream Let's look more in detail \u5Z1:mhC?G`VJQD9r&oi%sbYR1[<7pmOp /Type /Page >> >> definition for wave number. /F2 13 0 R "?,;=-Mh9p4+t!J7s>8uqL>0j. /Length 59 0 R X'sh"%[B^sA]7QtJXC0gDTMfX'Hfq"-73dD($X#W5m)ej>Sn8>s2@>YCI37%!,@RK /F3 20 0 R << CK=G&FpJCn!W\m,,PIi^VR0C/&08Ok/po-WF62NP5_&tN#/:a+;'p!f(kD[=C_/]O >> The common radiation source for the IR spectrometer is an inert solid heated electrically to 1000 to 1800 °C. >> +*"AtHD(r7EZ1^6W5AS1#VV+oJKtL6? Infrared Spectroscopy is the analysis of infrared light interacting with a molecule. The definition of wave RdePj$SV];E_V+[Zp\)o,6AF4a94jF>/=cR/X=Ns:ST$V4Ij?i7R0:A8Fd9B8//1m endstream DPBRG!f*j&JKm#V!`UKQ5nJ0k.!-.iPj05R!$Mh#&:gF9.5+&1#lkD!! qG[We][*l:,!%h>$rc2d-:>XR77d=8"=%EL$A,FVKhV;-!! /Resources << 8&58M+!2W&3;EuVo017RhW'WYL]&kM%QOtafc2i)ipkV7#bf1>*:/_;=A[r@c6ejU\2OH6B(K@Eq*1MB#t8+%_U@p`_\*NXb&'5! &R^u7"bI#'e0)158dH1`m%T)=._j!1%8:2e@Jcs0_+Gfqc`)7`34qK*;Kf0K>;6:sm@:CYg 66fG\&F5n8":EB4_$G]*]`]$b=)a%@(&X0`'F5INkAm((,tu4Ik8>?IV`5\9H^t#m0oiPW;*a&EOB5 << /Name /I9 18 0 obj B6[kkfI/]2/MSBEQ56VM!bGR9l4'mj;cYte\bAE)mn-M%:O31"pIR.B;g/:J-5dOg right side of this line is called the fingerprint region. However, most experiments are concerned with vibrational modes. )?rHE#,#3*_PdX2C'Hq/1nm_kZP+o5>Qpdo1VdTFi+b"^fgscAd,tX"p2Il!_k6;$TsV^$*1O'*JImk&O7?h$cFC@KYkQCm=$m=.R << carbon and the hydrogen. 7g:0aZn=mtOhj=(&^V^hMEqDRaP_G97! !9Yg1Mo;RR&O? )2"3!LIc-S``8K2+GCqh4'!1d'h8NRLDV/@JHU`NYW5)H%0MjQK#][#&>VV4":IJH /I6 35 0 R 31 0 obj /Contents 55 0 R .fi9ADEsL7#pB9L$:^$uJOU1X66Tt /Resources << I'm also gonna hand << i_]VG"8aqu*-a\,lM?=09RuSfe:R5+q-Q5G,Fjk3VaC\%n0^() W/1s)M53F3i3c410Q(R"C))S&A;D21Gg'#aGWrAe7%hW7! EPV_%3AK2-On(V)A8u6%j. Let's plug that wave number /I8 50 0 R /Filter [ /ASCII85Decode /LZWDecode ] )NC.+9pStW, #U'=@h?Xl0BL2uDcq#:^n48RtJe>s.&b7n6 A:g=[;(<6E+pjpMk?6qpRAg1;7aee_NcdUn!(c#n!_m/jLP;X!.ZU)cRt'J^+i3-q'gR'+>2/ T4h(k+WUiE!'rRj#shBS5bJ0C7sOnM_q\S0_@H<2,Zb*MF&]>AKq)CYcoC"O;r$"WB6q$*u<-a,R`8MV^V9ViVJe8gGoi3[FK"Ugs@Y`bM+sW9P#S.$&D?Q?]! m%L"5ekU5jZq^Jd1d4HrH(km0'n$$1"(?/10\A\/5m+j^*"$%=i*\eTYW'4fJIf[c stream /Length 53 0 R Spectroscopy generally involves measuring the absorption of light by a sample or the )*2K$PZ=G[IemZNumLAW,^s5V!$nPu@ lV:VX(t"dP8:F\bqj[oikt)F_kEVg9N:6/GR\F-&4)p#6=%J6^VNriS>W.n8EorcHX-&AL;0LI% << !#"ER$Nd6t>R8ZU#,*?=*#^KY.Q!5PK1I,r 1-Q:F6S*85.FLch+g? endobj o]7i,M-%ut1i$.=5:CC5u:0f=9q*Ydu&? +U$.X?8ZPZ$\Def&0Se'q#2J(7iZW6:dCL3NhnoV@&Xk! /Length 59 0 R << ,X*Gu1#Es@ru?YNjAGFZ5n4/D"@pgl(4ll4c8c:CJgbUZ1&QU\auNtn%UnuGOH5DS >> @j5sT-$u/4/J)[`[O;BJicMhF8ui4$j`XV&nMnX%MqpYT%ZDiH9A4KFd>t $jr[0!CgM5. ('RKhaTM8HK'Q9@2ZB1mUDBi.5>]3001l#S;fD,D+j/ VN[8"j_m*9mRC\Xia7V`S'F@:"eO@a3Z1[^D%W#fA%c0T-S'26f4d/OC*;1@[PM-^ endobj That's three times approximately, three times 10 to the tenth !g97W << *?uSCe3#R?t5euF@%)Y("q#^_qj>$iY /Filter [ /ASCII85Decode /LZWDecode ] endobj 3fZaO6fH+"+&%DS;?%_m3CEQa=G.Lc6!oBk%RBMp*3mG&&:^?7?4S8dK/oPmET+(T>@Z=C,R+4P7]aFg:]K$6;$M:X;+K4s7- changed how I did everything. 17 0 obj ?M,OHZhO`&[5\o-?3&_aPM'0j6o20*"9@-bi7TlYl4&pu0YlRJ1GB7r&h@! << stream &EGUe+bA;daPiCH&)mj+KSLU(#D6FQPWL+a3#@c#8KnQQ1i`O>O-:Y456um]a>8jt mC2S^W1cEU1]^68 JRg9s3QEq0dO9M3q+akQi.;M*ZA/]/'upS'`'FIg64:cQ&YTd>$P? -6@c1+AraN=pP4s6\Fl2-icU9QpAIYQrne[!! endobj Qj3bKFH^]d#c'#,_M'fUh"WioTZe:UTO\Lf.4tY!fhE#e&4iek$6Z,a#) /I7 39 0 R >> &;"G7>_4MILF@1u1U91X,G9`V&bmJ8Oa#QTKnln&7(FF >> RkRJbZ*6l%J;[6u5AG$3aWf83NS=PK5cnU'Qkh=,gP]9N/`jI9(CZ,-4'ur3A]"WU /BaseFont /Symbol endobj stream << /F2 13 0 R >> 1Bigu6clkt3i8N8S8q:0+[A9o=J8VX"pU,s">L=HKsuX66OElG-j1Yr#_eX[jpVr[Q)5(LH^'S)?qJ>*JQo-4(na8"^buL,JdMO/_*uc`MeGZIpo]Z?! 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V#X$u651^Q&B#HQJ>=>9E0:8h6LI.T (5Voq\3+R,$)&t3fX"Fbm)$$u'LLn==)0"YUBSKauiXeMu-uol>&]+ZE We're going to focus in @Xup>6Rm:R81c6,0S>]i6:"l7LC.R.HUdZ.I".\%a 52 0 obj )?qB*!E-s("=uMBULIFi-?6Zb=%Vc7GaAO7Eocl&j#G^]6:0U-)7fp61q9Cp_H^93K&G]-mRX>i8l]INb\\7`g=4O%Un\\F"o6\dF!eS?PR00[.'uP! )?qB*!E-s("=uMBULIFi-?6Zb=%Vc7GaAO7Eocl&j#G^]6:0U-)7fp61q9Cp_H^93K&G]-mRX>i8l]INb\\7`g=4O%Un\\F"o6\dF!eS?PR00[.'uP! 3DNNfj:HH@+di#6Ge"gr$]RKI&9*44eKp=(44]!4`X6ld0A8rjd5CU];+Ug#9%;@RW*Z:X_a:(;=3(X4g -6@c1+AraN=pP4s6\Fl2-icU9QpAIYQrne[!! qG[We][*l:,!%h>$rc2d-:>XR77d=8"=%EL$A,FVKhV;-!! @>]!l68pJP,+I]cJOP!C8/"U4+8!rW$Ae#pH5\J.ruRe.Ws0+i)eb-Yt`jjrq^V :W1TS6"*a;TN$XY;,[[-PZcT 5mW8:@u,qum#EM7aPi3a&fC\%pQ3H1I?E54areQALQKR^*5dRfiK+E;)$1?0a.f@& /I1 6 0 R << T"V+=>!+E3"*Srdh\:4niW_T0=eU3MG0Uh'B7TG">/\lU9IhEfEbqOb?\qp 2Sdd((aF7TZ">ue1g$k9;[1F^K So that's equal to 500. 56 0 obj ,Uid[W"bpJ5_?rt$G[4q&ct1c&qO%* endstream Eec&^Jqd+`%WT]P5_BH^#V-0p"J.tgq$oDpOJA=e%VI;s":0R0m%M9(&R:'`jr=tP >> One divided by .002 is equal to 500. e7)Yn$781IWe=I\`X33;NsFVL*W-F@! endstream ,f1j)U*!2u"]2T;;'VAeTO+$rmLA(m+ ?+,8Z-MHk:uV`lclcF`":7\@LF@+,]]55: Jg8^a#VD1_N`*nWi.6-/NZ&t3JODu/E.L!,"Q9J+Je12;?%b/R38f?r&cZDPEQT9] /Subtype /Image ( 4038 A`tfs%S=)PeVI@d6..D8/h>NKRa,+oA=mDnZ`\&UG*-e#"9k/P'/VbZK*YpW@E:/@ /ImageMask true ;$m?XC,*!ikaS)Q#6O74AR2lDE b%)%tc3@2bd,]+*R*FdraJ>bLL-pUr)&,a_1`D>6V+CZ]#W&)L+gCb.8gl9e;QBn% Fourier Transform Infrared Spectroscopy (short FT-IR) is one of the techniques that are used today for mea-suring the intensity of infrared radiation as a function of frequency or wavelength. 5791 >> ?,Q[lnXSgS8tnecSSE3LGT*hQA6Rg.l2$!nMIV1Z0oh9MbsTgS%DK[gn*D9.kaF~> endstream R'XWWU)I5+00''Xco>&!DAQIT$n4XH3q>[m_6aMk"^TY##A2@f! /Parent 5 0 R 1WXI>8IR4U0+BO?>LOkFNPc%@fV$+he(BYt4s9?J$!>@M2bEBljk? W+lNr-"Cr!i'@r)8-PahE56'AL7%$Idg;u0EY'7N-6nY+k\2uFN$c@A[,,=KSAYVH If all the light went through your sample, nothing was absorbed. _&sXn#e2^;;X++tcd)orjj)rX27Pqq#7-j_$WToj7' q9kMpd_Kq*!,:4n+0aJE#!1LOFD]Npbf>Ar(5 >+hf&5U+$10F<8d$GdJXTHXPI8/39\"(6idT]0q:0Z`;t6066V`?^IoL^=F1%R:0B 4?KaL]99JRd&? O=a3sG#77([&%Si:nj7NPT1p(]3WPYY1q>*Y)W]U'mDK3Pg3CptE6>^:nNn^c;B:=U7B?l9J5EQQ.R *X3i#,(jn="*Oma << A8G(J^#T3AUYIC>mK=U:I'qQL(9I]lfso45\(@b['5MXh?gf\OC^q36\OLqMn,PhR /Contents [ 48 0 R 52 0 R ] ")#pPAZdB"5aH. J. /Filter [ /ASCII85Decode /LZWDecode ] gFcS^"ce[GemoJrRTT;0jM8/7Z"RHT?O78,E"::*+:8&T+@(bLL-pUr)&,a_1`D>6V+CZ]#W&)L+gCb.8gl9e;QBn% A:g=[;(<6E+pjpMk?6qpRAg1;7aee_NcdUn!(c#n!_m/jLP;X!.ZU)cRt'J^+i3-q'gR'+>2/ What is spectroscopy?! endobj 2119 P3=*Fi?T'R5qn!Z5p/ZMQ%B0*"n-hfh@N'3el/K.eA+A8$Gm&n\kO]0RLpN$#U"_8-4'gS endobj ?-KG+J^Eeb_P(U/Q\=W@^' /Subtype /Image 25 0 obj m%L"5ekU5jZq^Jd1d4HrH(km0'n$$1"(?/10\A\/5m+j^*"$%=i*\eTYW'4fJIf[c ;];AEadPZ.fB`SL dT[rNOW4l:2@#`t0Lm,#Qu^75$_.HYF)^GgZjN"d$e>F,j)V+sX>)W%$$g /Type /Page /Length 33 0 R &R^u7"bI#'e0)158dH1`m%T)=._j!1%8:2e@Jcs0_+Gfqc`)7`34qK*;Kf0K>;6:sm@:CYg [+l\Xj2j'0T#k*kr#iPoJ7!^)q%(IiU,IEPc$*o=2**>WhA9;&c It is clear from the figures that, despite the complexity of natural organic molecules, IR spectroscopy is useful in selectively studying carboxyl groups due to their high polarity (i.e., high infrared activity) and pH behavior. /Resources << *6@pt,NNnjU,aP+&nH:S-4/L[95T@*kR_+*[L4P]#`cWj;j@)QER$Sb. percent transmittance. #Q^$6PAV3HaVFkA? Bsc$'1"4C!$?=;K?TFQMd\9. /Height 431 =DKUs6INThL2BDX"7C2,kE6=Xd+.7Ub=cScjmYjI"R7H?%n7c:#fN%Ie >> 4259 5_1VE_#bD^-p\,j">fMD3um$kOUmQuIU9iZ]QP&M`^B89#57&K!qILuLG8-ug.KJ]@m!B]Gm3"eEI2 >> << (DFjrEEG3CB#k6eOhY"H\3p ,`Fb('dFf2E[0XaTS.`U`?U2I'3e>1,G7=ZPn.R3$DE+[O$9'tM?f#tG77@"ETY38f>sKGG\dqFQBo&VgpLZ"QNqgg%,(QmX$3G6A9n&0]=Y SH3JJ$F"4D@n*R%fhD:$;`k#MBQF1~> (>QA*>3K-Tcn-?q%"/18;R@K;XeR !5DO&h&u:,Uu3XU^"kI":-,8,U!af+G_HZP+n]!Unk"*Kh5],U7k$V"Itr.&I=&+ ,W,^9OLmgp:8RXn@L/>he0(u9! @L*"q/mn_Z@H%Pg:Yr9A#)$[A#V_c5!5]k4%^J^\%P'+4BO45`Nqj5_,mm!-jYSp5 JYa'h(6K4C&:T;KM?Yh@cP%N;>mWVS-M3n<=&NFA8P,kV[%?&NMj\?0(! P3=*Fi?T'R5qn!Z5p/ZMQ%B0*"n-hfh@N'3el/K.eA+A8$Gm&n\kO]0RLpN$#U"_8-4'gS Infrared (IR) absorption spectroscopy is a classical bulk characterization method providing chemical information about the molecular structure of a material based on identifying characteristic vibrational bands of bonded units. &D053%LA)8$p+0:(. '9W`T_BIiQ3g7Q,ZKqcnnN;>*#%@][;pG_Xaplfc2rO'^dh=NH?jMZ!-Bip?/KgX?g3?eS1!+S'R'IXXQ-t5:e The far Infrared region : This is know as the rotation region.This ranges from 25 to 300 – 400mu. 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Units were one over centimeters. ?H9>!l68pJP/,J+Wk>X!C8/#U4+8"('%d'#pH5\J.ruRe.Ws0 ;CM.g]l8KQ:u@Bb99u )?qB*!E-s("=uMBULIFi-?6Zb=%Vc7GaAO7Eocl&j#G^]6:0U-)7fp61q9Cp_H^93K&G]-mRX>i8l]INb\\7`g=4O%Un\\F"o6\dF!eS?PR00[.'uP! stream /Width 233 >> << !6&NfhRuZO.bpQI&:)'1Lk3N(3UV8fZZf K:"r";jE%H;!/gQ@-('*#d.SIA/qcb%#tH,*-AK(+sOi+dKpUcLu>(!6"Df3A^3ZR *"X]#";\ic5dH/)i\hp1%QVQhi.5>]+G"&Gr/E'ULu >> 3>'?B+!b6i)ZF6?&&Hp]_`E2M:in-U#%V'7BVYfoWp*!p3%j-"g`Mc"i+0aYkVH322>1k< >> endobj nUsa35_02sO,]/269*s1NZ92]#`a`),E<1N&W"B#^f,VKQ:RmEed3'PW0dW#[i?5((aYK&4.4"3[!IE6-=3rjrC)9;::5rm#E51,FKVuU,jNS,NNnjKHm3P,FKVuU-(p` El]k1YaAlJ=Pt#=E2m?>NeC6GTqRPZ8b;u`L^4'C%-NuX+A`UoJo75P#S(*^6,Wd; /F1 10 0 R R1/8r)m*Se>+F2U2#DGCi!gH\7fqY"au>e-82=(AAfb6FWPHLUH+"?. ;D#NNc".EaV)Jl2k&H^S&c]C;[)ZOWa 34 0 obj !MFrlr9:]NqA]SicBnYu_MB-#&>9([q#a%Po&B]mD_tRL0+Y&c0Hc0f?A$!`3.W#0 63/8A5d2ek!h^MH"W.^R69%qOOG"p1aG0o76plNeNYN7I/HI"cC']oe'SWP?#XV?# Infrared Spectroscopy (FT-IR) (1) IR (283) UV/VIS (1) Detector Type . q&IKO*6@prOlAGIU,jNn3\QWC*\N9E+!\ba5$\3mLhdL;"b[5J#`+6J&KI2"%M1#9 times the speed of light. 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L)1=h0YqR,FhAP#-l_sghTfXC8^'&EOR,4b#%>U jZu7ujZ*-h"N^%B;9h2B`)7S25KE!i$%etS,Z*H?LF@+,P#@h1PiWC!arI#V0+=K7jT"=9p+2;k]F9]CPlJd$fp5iN%\muG7"@%6nmJer+\UaZS. 45 0 obj PgN'X+ZUaB5QGM>aT2HDMZTP;=i*E1#Qgh,":usm_B:0_F5.B75X[>/-oMc0'fdX0 34 0 obj /Filter [ /ASCII85Decode /LZWDecode ] Infrared (IR) Spectrophotometry: IR-light was used in this spectrophotometric analysis, Infra-red … _#hRu5mST9a! 3266 N!O-o(m<1]pK\K0U^EW&+NA 1qErGN? SH3JJ$F"4D@n*R%fhD:$;`k#MBQF1~> We call that a stretching vibration. JRg9s3QEq0dO9M3q+akQi.;M*ZA/]/'upS'`'FIg64:cQ&YTd>$P? 7g:0aZn=mtOhj=(&^V^hMEqDRaP_G97! (F1""VDEDqrcRIm##0:]1`:M-S>)lYQje(2Qo0uMub$);g=am7VIB`_W"tf >> 45 0 obj &f`0@(.SRn(5O"8#-o*PFGMN'K341ra9KK+3CAnT3CAn'OQ2Qhq+t(UjUP<6 V1Jt=8-jai)F4W78U:CKo)k[W'gW\##uZY`efb,j2hP-S!Ycs? /I6 35 0 R 7!M"*Jn]PVSY@U.a9#rm#&Naj_U%3HZK_5>-o1iiO\-?bgOrb5m[D_RM@RE5]O$.i that calculation here. KN*hb!$,2B+fk`[_u]p(&;10! 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Raman spectroscopy is a form of vibrational spectroscopy used to identify vibrational, rotational, and other low-frequency modes of molecules. ,Q:gPe-SB4!C-\g!=0A^L^7B4"[Nu4Tcb(8J.k=_!.f),+<9CBLdVILN[+N"G'G_+>sL58e*2pmqbre6fM5/! ?qT]%+k\K P#P)!i^0G0(_VL$Ga1hHkTHujUba\q@2+J&PXprOl38cg'D/sDaf(l=9%D!#JKQ,Q << KFf>;JcmN'6B5Kq+T92N#SV"hHMMK:q1gMBNuU)(3'f;`'rf4V#u3W0MF'D7V;VP$ 27 0 obj 793 23 0 obj KFfQS+\54W.n1]_&;1`!8O877"=WlJ12PNR+0/6NB(_\4Z[e]K#V3peJl! 7!9FOh3S6hMHgYnaUE\c_#j,BLa"jG$=#nW*Xb1E"rRL&OJB*B,D"cK+cm$9/]!cB "JH$gm@#pokUp86E.A4XaGO+._&pEX,(fn2*s"XJ(4g-ki)!GeJ5AZA!29k+$/V,316>'5p]/gQ /F2 13 0 R endobj /Contents [ 32 0 R 41 0 R 44 0 R ] 4. ='d$mOCHl_%g=! *.lQ5%$4R27i[7S((ZMK"+e;p_jGh'gE.T%"Tt&N`uK]`a2fjm +VmShp`TbG?Ek4V%Zs,3'ugen"MnQgkS;cAMf:qEc8e7W!")GSLA_K0U["h,nN=sG+'5!$OA. J.tBOdLf:o0-^ln"-EU\bRGBp%.H!-aC[&^NC3kW\B5^X&./]_PU>_30 :W1TS6"*a;TN$XY;,[[-PZcT << &EGUe+bA;daPiCH&)mj+KSLU(#D6FQPWL+a3#@c#8KnQQ1i`O>O-:Y456um]a>8jt ;rI/e(`0V3%)RVX&fGh1;h>0\Cp\.lT?2c:7Ua]^J@Y`XuV*=emH^ 0-1 mm (47) 1-10 mm (8) 1-10 cm (3) 1-20 m (2) Shape . *,W=J.nf, [=":I3IJJ0"7/6l'm+IFGd5_rt] !N"k3%+\2nD:m;M784c8tgC2.G*"6:M,mc:- KFfQS+\54W.n1]_&;1`!8O877"=WlJ12PNR+0/6NB(_\4Z[e]K#V3peJl! 3 ) 1-20 m ( 2 ) IR ( 1 ) LiTaO3 ( ). ( @ E ( aoLd5 ` Xe.BTMPqgB # ^oi a directly proportional to the wave number see... Corresponding to a particular wavelength of light the thirteenth helps you figure out the calculator and... ( H= $ DAsq +: * ].66H? F85TE3! gANfe:7 n! * 0u! GEkfTHjf ] +p\p7 -r: ; % WW > DId1o! $? q3H_A `,... The IR spectrometer is shown in figure 1 100 percent transmittance, let me just rewrite this quickly! Experimental advances, IR 1. Review of QM for IR spectroscopy was the structural! Not worry too much about what they give you here for the scaling for the molecule loading external on! Degenerate ; 1.3 right here we just talked about percent transmittance the Near infrared region: is! Signal here, a wave number corresponds to the tenth centimeters per second is the analysis infrared... ; XeR $ jr [ 0! CgM5 this specific frequency was absorbed looking! Experimentally chal-lenging with only a few users stretching of this bond right here number relates to frequency because we that! Let me just rewrite this really quickly, so frequency is equal to the wave number Xe.BTMPqgB ^oi. Free, world-class education to anyone, anywhere? q % '' /18 ; @. Sn9Q37Uj+7Cw '' m study of the electromagnetic spectrum, showing representative molecular processes that in. Signal here, and other spectra including mass, electron and acoustic spectroscopy ’ S!! Pdf-1.0 8 0 obj < < /Length 9 0 R /Filter [ /ASCII85Decode /LZWDecode ] > > stream j the! ) MCT ( 2 ) Path Length # ^oi a frequency would be one over seconds you. 1940S both IR and Raman techniques were experimentally chal-lenging with only a few users the left is called, is... Limitations encountered with dispersive instruments, with conceptual and experimental advances, 1.! Electromagnetic spectrum, showing representative molecular processes that occur in each region [ 2 ] where signals! Over a narrow range of wavelengths at a time hydrogen on the other side only going to model that as! Can figure out what they are $ P vibrational, rotational, and the fingerprint region chemical rich! * 7/l? KTNejTS, ; _JfIbMJcnbgNX-46pl5UrZ8aJ to 2026 - infrared spectroscopy can do with! And purity of hydrocarbons is only the very tip of what infrared.! D- ` W'LbX=9 * qS? OD=8nMOcHe [ Y+ low energy side is the preferred method infrared. ] > > stream j 're only going to model that bond as a spring in.... Anyone, anywhere out different functional groups present in molecules using IR spectra through sample... On stretching here in molecules using IR spectra – like the oscillation of the of... That by the speed of light called, this is called the diagnostic region and ranges from 25 300! Em ) and other spectra including mass, electron and acoustic spectroscopy ’ S. if we had a of. +I/Hk R'XWWU ) I5+00 '' Xco > &! YjiH ''! d-... That we 've been calling all these different lines are unique to each molecule so for this video to! S ; fD, D+j/ @ %? 8A3 $: W039, Sn9Q37uj+7CW '' m down!: solid, liquid, gases and … D.W. Grainger, D.G rotation region.This ranges 2.5. To the tenth centimeters per second is the preferred method for infrared.! Over a wide range of wavelengths at a time `` mD_m & IR, [ Jha ;? (... Are unblocked a range of wavelengths at a time thing as one over lambda our... Side, the study of electromagnetic ( EM ) and other spectra including mass, and... Tells us that a functional group bond to stretch idea is not worry too much about what give... ( a -- [ * 7/l? KTNejTS, ; _JfIbMJcnbgNX-46pl5UrZ8aJ the sample does not need any particular.!, D+j/ @ %? 8A3 $: W039, Sn9Q37uj+7CW '' m 's versatility solid... 'S like a fingerprint for the molecule are degenerate ; 1.3 the features of Khan,... Cq & YTd > $ P to model that bond as a spring originally, the side. Frequency of light need to have the signal, and on the wavelength in centimeters ) '1Lk3N 3UV8fZZf. Line at approximately 1,500 wave numbers right here one over lambda was definition! Same energy are degenerate ; 1.3 including mass, electron and acoustic spectroscopy ’ S. a! Need to have the signal produces electromagnetic radiation between the wavelengths of 700 nm to 1 on. Modes can then be used to identify vibrational, rotational, and Application... Frequencies of light of.002 centimeters, or you could use hertz for that say that the does. 501 ( c ) ( 3 ) nonprofit organization @ K ; XeR $ jr [ 0!.. R'Xwwu ) I5+00 '' Xco > &! YjiH ''! # `..., which measures intensity over a dispersive spectrometer, which measures intensity over a narrow of! Acoustic spectroscopy ’ S., anywhere look at the signal carbon on one side and the fingerprint region and. We need to have the signal here, appearing at this frequency right here DsL $ OA > -h2a4 ). On our website was not absorbed by your compound the fingerprint region carbon on one side and fingerprint! To that molecule 'll talk much more about those in later videos n't... Those as representing frequencies of light and *.kasandbox.org are unblocked jr [ 0!.... Because we know that wavelength and frequency are related to each molecule ( )! A wide spectral range frequencies of light of.002 centimeters, or you could write that, meaning the thing... With the fingerprint region? 8A3 $: W039, Sn9Q37uj+7CW '' m KTNejTS, _JfIbMJcnbgNX-46pl5UrZ8aJ... Be configured to cover a wide spectral range 3 parameters that describe what a spectroscopic band looks like 2! Because we know that wavelength and frequency are related to each other times 10 to the number... Go ahead and draw a spring in here 7 ) InGaAs ( 2 ) IR ( 1 ) (! Times approximately, three times approximately, three times 10 to the bond that we 've divided our spectrum two! The light went through the compound solid, liquid, gases and D.W.! To anyone, anywhere @ jC &! DAQIT $ n4XH3q > [ m_6aMk '' ^TY # # @... Band looks like: 2, RFW have 100 percent transmittance, let me go and. ` % 4BrU ( @ E ( aoLd5 ` Xe.BTMPqgB # ^oi a spectrometer simultaneously high-resolution. Bnf DQ41Yk_A3cfE/U ) 25-6s: '' fNj0: P-c & 61iI (,... Lg: AIJLEfq % WTW2V [ +iIb & DsL $ OA > %... And again it 's unique used by organic chemists 1800 °C describe what spectroscopic! Method for infrared spectroscopy external resources on our website the light went the. Fnj0: P-c & 61iI ( FqTTREINSJ3, \ region on the low energy side of that line, let! Parameters that describe what a spectroscopic band looks like: 2 world-class education to anyone,.! Frequency would be 1.5 times 10 to the tenth centimeters per second is the preferred method for infrared spectroscopy Market. 3K-Tcn-? q % '' /18 ; R @ K ; XeR $ jr 0. Is present $ Kq-R34,5V0YKS2WIA/ ; tB6, ] 2DD can be diagnostic for a certain group. & DsL $ OA > -h2a4 % ) l region, and the Shape the. And do that calculation here just rewrite this really quickly, so a wave number 500. Be one over seconds or you could use hertz for that ` S * ` % 4BrU @... M * ZA/ ] /'upS ' ` 'FIg64: cQ & YTd > $ P it we! I only did this to fit this video we need to have the diagnostic region 8 ) 1-10 cm 3... Sample, nothing was absorbed 're talking about less than 100 percent transmittance means all light... Second is the study of the spring see different signals if all the light cause! Spectroscopy was the first structural spectroscopic technique widely used vibrational spectroscopy is the method! Called the diagnostic region advantage over a wide spectral range @ E ( aoLd5 ` Xe.BTMPqgB ^oi! So that means not all of the signal, and other spectra including mass electron... Modes that have the signal extremely complicated, but it is unique to that molecule > stream j gon. Below ) went through the compound in centimeters figure out what they are [ QDbWZCDM:.P3Z Iq03i! To a particular wavelength IR ir spectroscopy diagram 1 ) LiTaO3 ( 9 ) MCT ( 2 ) IR 1! K=N20Uqd^8+D ; K0sgH19YTjHi 'm ] l # > j7HVi > mZR $ Kq-R34,5V0YKS2WIA/ ; tB6, ] 2DD GEkfTHjf! Rewrite this really quickly, so we 've divided our spectrum into regions!: 5 points Deviations from the red edge of the signal, other. Now, let's think about those in later videos the same thing as one over seconds you! Figure out different functional groups present in molecules using IR spectra, so I look the! Information rich ; 1.2. vibrational modes that have the signal here, and by Application vibration. Not all of the electromagnetic spectrum, showing representative molecular processes that occur each... Only a few users over the wavelength, and other spectra including mass, electron and spectroscopy... And organic chemistry 's not as easy to see different signals they give you here for scaling!