Generalized Chemical Formulae
-R (in 1 term)cross-conjugation–[CH2]n– (in 1 term)cyclophanes–CnH2n+1 (in 1 term)alkyl groups–CR2–CH2–CR2– (in 1 term)meso structures in polymers–CR2–CR2O– (in 1 term)crown–CR2H (in 1 term)isonitroso compounds–N=CR2 (in 1 term)nitrile ylides–NR– (in 2 terms)diamididesimidines–NR2 (in 1 term)sulfenamides–NRNR2 (in 1 term)hydrazides'R–C≡C+ (in 1 term)umpolung(=NR)2 (in 1 term)sulfonediimines(CH)n (in 1 term)polyhedranes(HO)2P(=O)(OR) (in 1 term)esters(R'S)2C(=O) (in 1 term)esters(R2C=N:+) (in 1 term)nitrenium ions(R2N:+) (in 1 term)nitrenium ions(R2N)4C (in 1 term)ortho amides(RO)aSi(B)b(C)c(D)d (in 1 term)organically modified silica(RO)3Si–CH=CH2 (in 1 term)chemical functionality(SiH)2n(NH)3n (in 1 term)silasesquiazanes(SiH)2nO3n (in 1 term)silasesquioxanes(SiH)2nS3n (in 1 term)silasesquithianes(Sm3++e−)S2− (in 1 term)valence transition(XC2H2C2H2)2NR (in 1 term)mustards(XC2H2C2H2)2S (in 1 term)mustards[–OSiR2–]n (in 1 term)silicones[(CH)a(BH)mHb]c (in 1 term)carbaboranes[(H2O)nH]+ (in 1 term)cluster ion in mass spectrometry[Fe(2-pic)3]Cl2·EtOH (in 1 term)spin crossover[HOC(=NH2)NH2]+X− (in 1 term)uronium salts[M + H]+ (in 1 term)protonated molecule in mass spectrometry[M2]+. (in 1 term)dimeric ion in mass spectrometry[R4As]+X− (in 1 term)arsonium compounds[R4P+]X− (in 1 term)phosphonium compounds[R4Sb]+X− (in 1 term)stibonium compounds[RC(=O)]2NR (in 1 term)diacylamines[TS]‡ (in 1 term)kinetic isotope effect[X2PN]n (in 1 term)phosphonitriles+R (in 1 term)cross-conjugation.− (in 1 term)radical ion.+ (in 1 term)radical ion=NNR2 (in 1 term)hydrazonic acids=NOR (in 1 term)hydroximic acids=NR (in 5 terms)amidinesdiamididesimidic acidsimidinesquinonimines (quinone imines)A (in 12 terms)atom–molecule complex mechanismBrønsted relationcatalytic hydrogenolysisdimerizationelectron-transfer catalysisheterolytic dissociative adsorptionhomolytic dissociative adsorptionisotopic fractionation factorkinetic isotope effectlight-atom anomalypotential-energy (reaction) surfacerepulsive potential-energy surfaceA–B (in 4 terms)heterolytic bond-dissociation energylight-atom anomalypotential-energy (reaction) surfacerepulsive potential-energy surfaceA'H (in 1 term)heteroconjugationA1-xBx (in 1 term)chemical diffusionA2 (in 2 terms)atom–molecule complex mechanismdimerizationA− (in 3 terms)Brønsted relationheteroconjugationhomoconjugationA+ (in 1 term)heterolytic bond-dissociation energyA+. (in 1 term)electron-transfer catalysisA. (in 1 term)heterolytic bond-dissociation energyabC=C=Ccd (in 1 term)chirality axisabC=Cc2 (in 1 term)pro-E, pro-ZAcO− (in 1 term)ligandsAH (in 1 term)homoconjugationAM (in 1 term)atom–molecule complex mechanismArCR2– (in 1 term)benzylic groupsArNRNRAr (in 1 term)hydrazo compoundsAsnHn+2 (in 1 term)arsanesAsR3 (in 1 term)arsenidesB (in 9 terms)catalytic hydrogenolysisconjugate acid–base pairelectron-transfer catalysisheterolytic dissociative adsorptionhomoconjugationhomolytic dissociative adsorptionionic conductivityisotopic fractionation factorlight-atom anomalyB' (in 1 term)heteroconjugationB− (in 1 term)heterolytic bond-dissociation energyB+. (in 1 term)electron-transfer catalysisB. (in 1 term)heterolytic bond-dissociation energyBC (in 1 term)light-atom anomalyBH+ (in 1 term)conjugate acid–base pairBinHn+2 (in 1 term)bismuthanesBuLi (in 1 term)organometallic compoundsC (in 1 term)light-atom anomalyc (in 1 term)pro-R, pro-SC–D (in 1 term)steric isotope effectC–R (in 1 term)bisecting conformation (eclipsing conformation)C(OR')4 (in 1 term)ortho estersCn(H2O)n (in 1 term)carbohydratesCnHn+1 (in 1 term)annulenesCnHn (in 1 term)annulenesCnH2n-2 (in 1 term)alkynesCnH2n+2 (in 1 term)alkanesCnH2n (in 1 term)alkenesC2H4DBr+. (in 1 term)isotopic molecular ionC5n (in 1 term)terpenesC6H5Z (in 1 term)partial rate factorC=X (in 1 term)bisecting conformation (eclipsing conformation)Cabcd (in 1 term)chirality centreCaCl2·nROH (in 1 term)alcoholatesCDCl3 (in 1 term)chemical shift, δCe (in 1 term)symmetry-conserving transitionCH2D2 (in 2 terms)isotopologueprincipal ion in mass spectrometryCH2D+ (in 1 term)isotopic ionCH2DCH=O (in 1 term)isotopomerCH2DCO2H (in 1 term)prochiralityCH3(CH2)nCO2−M+ (in 1 term)amphiphilicCH3(CH2)nN+(CH3)3X− (in 1 term)amphiphilicCH3(CH2)nSO3−M+ (in 1 term)amphiphilicCH3CD=O (in 1 term)isotopomerCH3CH=CHD (in 1 term)isotopomerCH3CHDOH (in 2 terms)isotopomerprochiralityCH3CHOHCHDCH3 (in 1 term)prochiralityCH3D (in 1 term)isotopologueCHDTCO2H (in 1 term)prochiralityCHX3 (in 1 term)haloformsCl3C[CH2CHPh]nBr (in 1 term)telomerizationD (in 1 term)organically modified silicaD2O (in 4 terms)chemical shift, δgaseous diffusion separator in atmospheric chemistryheavy waterpHDF (in 3 terms)branching ratiochemical lasermolecular laserEr3+ (in 1 term)solid state lasersGdFeO3 (in 1 term)magnetic transitionGY (in 1 term)cross-conjugationH–[CH2–C(CH3)=CH–CH2]n–OH (in 2 terms)dolicholspolyprenolsH–[CH2C(Me)=CHCH2]nOH (in 1 term)prenolsH–[CHOH]n–C(=O)[CHOH]m–H (in 1 term)ketosesH(CH2)n (in 1 term)alkyl groupsH[CH(OH)]nC(=O)H (in 1 term)aldosesHnL (in 1 term)protonation constantH3Sn[OSnH2]nOSnH3 (in 1 term)stannoxanesH3Si[OSiH2]nOSiH[OSiH2OSiH3]2 (in 1 term)siloxanesH3Si[OSiH2]nOSiH3 (in 1 term)siloxanesH3Si[SSiH2]nSSiH3 (in 1 term)silathianesHA (in 2 terms)Brønsted relationgeneral acid catalysisHB+ (in 1 term)homoconjugationHD (in 1 term)branching ratioHDO (in 2 terms)gaseous diffusion separator in atmospheric chemistryheavy waterHL (in 1 term)extraction (equilibrium) constantHLaq (in 1 term)extraction (equilibrium) constantHOC(=O)[CH(OH)]nC(=O)OH (in 1 term)aldaric acidsHOCH2[CH(OH)]nC(=O)OH (in 1 term)aldonic acidsHOCH2[CH(OH)]nCH2OH (in 1 term)alditolsHOCR'=CR2 (in 1 term)enolsHON=C{[CH2]n}2C=NOH (in 1 term)E, ZHSnH (in 1 term)polysulfanesHTO (in 1 term)gaseous diffusion separator in atmospheric chemistryL (in 3 terms)formation constantisostructural reactionprotonation constantl' (in 1 term)syntectic reactionl'' (in 1 term)syntectic reactionLixTiS2 (in 1 term)intercalation reactionM (in 7 terms)alkoxidesatom–molecule complex mechanismdimeric ion in mass spectrometryformation constantisostructural reactionprotonated molecule in mass spectrometrysialonM–Si–Al–O–N (in 1 term)sialonM− (in 1 term)charge-transfer reaction in mass spectrometryM+ (in 1 term)charge-transfer reaction in mass spectrometryMn (in 1 term)extraction (equilibrium) constantM2+ (in 1 term)charge-transfer reaction in mass spectrometryMgX2 (in 1 term)Grignard reagentsMH+ (in 1 term)protonated molecule in mass spectrometryMLn-1X (in 1 term)isostructural reactionMLn (in 3 terms)extraction (equilibrium) constantformation constantisostructural reactionNnHn+2 (in 1 term)azanesN+abcd (in 1 term)chirality centreNd3+ (in 2 terms)neodymium lasersolid state lasersNg (in 1 term)excimer lampNg2 (in 1 term)excimer lampNHR (in 1 term)amidesNR (in 2 terms)iminesylidesNR2 (in 2 terms)amidesglycosylaminesO2NN=CR2 (in 1 term)nitriminesO−–Z–O. (in 1 term)semiquinonesO=NN=CR2 (in 1 term)nitrosiminesP(=O)(NR2)3 (in 1 term)phosphoramidesP(=O)(OH)(NR2)2 (in 1 term)phosphoramidesP(=O)(OH)2(NR2) (in 1 term)phosphoramidesPnHn+2 (in 1 term)phosphanesPabc (in 1 term)chirality centrePhX (in 1 term)selectivity factor, SfR (in 48 terms)acetalsaldehydesalkoxidesalkyl groupsarsinesazomethinesbisecting conformation (eclipsing conformation)bismuthinescarbene analoguesdiazoamino compoundsdiazoatesestersethershemiaminalshemiketalshydrazideshydroperoxideshydropolysulfidesiminesketalsketiminesketonesketoximesorganically modified silicaphosphinespolysulfidesselenenic acidsselenidesselenolsselenoxidesselonessiliconessteric effectstibinessulfenamidessulfenic acidssulfenyl groupssulfenylium ionssulfenyl radicalssulfidessulfonessulfoxidestelluridesthioacetalsthioethersthioketonesthioketone S-oxidesthiolsR–[S]n–R (in 1 term)polysulfidesR–As (in 1 term)arsanylidenesR–C–R (in 1 term)bisecting conformation (eclipsing conformation)R–C:–CH2C(=NR)R (in 1 term)imino carbenesR–C≡C− (in 1 term)umpolungR–C≡CX (in 1 term)umpolungR–C≡N+–Y− (in 1 term)nitrilium betainesR–NCO (in 1 term)estersR' (in 15 terms)hemiacetalsiminesnitronesortho estersoxime O-ethersSchiff bases (Schiff's bases)thioacetalsthiohemiacetalstrioxidesurethanes (urethans)acetalsalkoxyaminescarbamatesdiazoamino compoundsenolsR'2C=NR (in 1 term)iminesR'C(=O)(OR) (in 1 term)estersR'C(=O)(SR) (in 1 term)estersR'C(=S)(OR) (in 1 term)estersR'S(=O)2(OR) (in 1 term)estersRkE(=O)l(OH)m (in 11 terms)acyl groupsacyl speciesamidesanilidescyclic acid anhydrides (cyclic anhydrides)estershydrazideshydrazonic acidshydroxamic acidshydroximic acidsimidic acidsRmX (in 1 term)ylidesRmX+–C−R2 (in 1 term)ylidesRmX+–Y− (in 1 term)ylidesRmX+–Y−Rn (in 1 term)ylidesRmX=Y (in 1 term)ylidesRmX=YRn (in 1 term)ylidesRnE(=O)OH (in 1 term)amidinesRnE(NR2)m (in 1 term)amidesRnE(OH)m (in 1 term)amidesR2AsH (in 1 term)arsinesR2BiH (in 1 term)bismuthinesR2BOH (in 1 term)borinic acidsR2C: (in 1 term)alkylidenesR2C(OH)–(OH)R2 (in 1 term)pinacolsR2C(OH)NR2 (in 1 term)hemiaminalsR2C(OH)OR (in 1 term)hemiketalsR2C(OH)OR' (in 1 term)hemiacetalsR2C(OR')(SR') (in 1 term)thioacetalsR2C(OR')NR2 (in 1 term)hemiaminalsR2C(OR')SH (in 1 term)thiohemiacetalsR2C(OR)2 (in 1 term)ketalsR2C(SR')2 (in 1 term)thioacetalsR2C(SR')OH (in 1 term)thiohemiacetalsR2C(SR')SH (in 1 term)thiohemiacetalsR2C−–O. (in 1 term)ketylsR2C+–CR=C−R (in 1 term)vinyl carbenesR2C.–O− (in 1 term)ketylsR2C.–OH (in 1 term)ketylsR2C.+ (in 1 term)carbene radical cationsR2C… (in 1 term)alkylidynesR2C…− (in 1 term)carbene radical anionsR2C= (in 1 term)hydrocarbylidene groupsR2C=C: (in 1 term)vinylidenesR2C=C+–R (in 1 term)vinylic cationsR2C=C=C=CR2 (in 1 term)cumulenesR2C=C=CR2 (in 1 term)allenesR2C=C=NR (in 1 term)keteniminesR2C=C=O (in 1 term)ketenesR2C=CRC:R (in 1 term)vinyl carbenesR2C=N–O. (in 1 term)iminooxy (iminoxy) radicalsR2C=N+ (in 1 term)iminylium ionsR2C=N+(O−)H (in 1 term)nitronesR2C=N+(O−)R' (in 1 term)nitronesR2C=N+H2X− (in 1 term)onium compoundsR2C=N+R–C−R2 (in 1 term)ylidesR2C=N+R2 (in 1 term)iminium compoundsR2C=N+R2Y− (in 1 term)quaternary ammonium compoundsR2C=N. (in 1 term)iminyl radicalsR2C=NNHC(=O)C(=O)NH2 (in 1 term)semioxamazonesR2C=NNHC(=O)NH2 (in 1 term)semicarbazonesR2C=NNR2 (in 1 term)hydrazonesR2C=NOH (in 2 terms)ketoximesoximesR2C=NOR' (in 1 term)oxime O-ethersR2C=NR' (in 2 terms)ketiminesSchiff bases (Schiff's bases)R2C=O (in 1 term)ketonesR2C=O+–Y− (in 1 term)oxonium ylidesR2C=S (in 1 term)thioketonesR2C=S=O (in 1 term)thioketone S-oxidesR2C=Se (in 1 term)selonesR2C=SO2 (in 1 term)sulfenesR2CH–O. (in 1 term)ketylsR2CMLn (in 1 term)metal–carbene complexesR2Ge: (in 2 terms)carbene analoguesgermylidenesR2Mg (in 1 term)Grignard reagentsR2N–O− (in 1 term)aminoxidesR2N–O. (in 1 term)aminoxyl radicalsR2N–OH (in 1 term)aminoxidesR2N[CH=CH]nCH=N+R2 (in 1 term)cyanine dyesR2N+=CH[CH=CH]nNR2 (in 1 term)cyanine dyesR2N. (in 1 term)aminyl radicalsR2N.+–O− (in 1 term)aminoxyl radicalsR2NC(=O)OH (in 1 term)urethanes (urethans)R2NC(=O)OR' (in 1 term)urethanes (urethans)R2NCR=CR2 (in 1 term)enaminesR2NNO (in 1 term)nitrosaminesR2O+–C−R2 (in 1 term)oxonium ylidesR2Pb: (in 2 terms)carbene analoguesplumbylidenesR2PH (in 1 term)phosphinesR2POH (in 1 term)amidesR2S(=O)=NR (in 1 term)sulfoximidesR2S=O (in 1 term)sulfoxidesR2SbH (in 1 term)stibinesR2Se(=O)2 (in 1 term)selenonesR2Se=O (in 1 term)selenoxidesR2Si: (in 1 term)carbene analoguesR2Sn: (in 2 terms)carbene analoguesstannylidenesR2Te(=O)2 (in 1 term)telluronesR2X+ (in 1 term)halonium ionsR2Z+–N−R (in 1 term)imidesR3As (in 1 term)arsinesR3Bi (in 1 term)bismuthinesR3C–C(Y)=X (in 1 term)bisecting conformation (eclipsing conformation)R3N (in 1 term)amine imidesR3N+–C−R2 (in 1 term)ylidesR3P (in 1 term)phosphinesR3P+–C−R2 (in 1 term)phosphonium ylidesR3P+–O− (in 1 term)phosphine oxidesR3P=CR2 (in 1 term)phosphonium ylidesR3P=O (in 1 term)phosphine oxidesR3S+ (in 1 term)sulfonium compoundsR3Sb (in 1 term)stibinesR3Si– (in 1 term)silyl groupsR3Si. (in 1 term)silyl radicalsR3SiC(=O)R (in 1 term)ketonesR3SiOH (in 1 term)silanolsR3SiOR (in 1 term)ethersR3Y+–N−R (in 1 term)imidesR4P. (in 1 term)phosphoranyl radicalsR− (in 1 term)common-ion effect (on rates)R+ (in 3 terms)attachmentcommon-ion effect (on rates)ion pair returnR1 (in 1 term)E, ZR1. (in 1 term)α-cleavage (alpha-cleavage)R1COOR2 (in 1 term)moietyR1R2C(=C=C)n=CR3R4 (in 1 term)E, ZR1R2C=CR3R4 (in 1 term)E, ZR1R2C=NOH (in 1 term)E, ZR2 (in 1 term)E, ZR2O (in 1 term)moietyR3 (in 1 term)E, ZR4 (in 1 term)E, ZRo (in 1 term)steric effectRoY (in 1 term)steric effectRAs: (in 1 term)carbene analoguesRAsH2 (in 1 term)arsinesRB: (in 2 terms)boranylidenescarbene analoguesRB(OH)2 (in 1 term)boronic acidsRBiH2 (in 1 term)bismuthinesRC(=NH)– (in 1 term)imidoyl carbenesRC(=NOH)NO (in 1 term)nitrosolic acidsRC(=NOH)NO2 (in 1 term)nitrolic acidsRC(=NR)(OH) (in 1 term)imidic acidsRC(=NR)C:–R (in 1 term)imidoyl carbenesRC(=NR)NRC(=NR)R (in 1 term)diamididesRC(=O)H (in 1 term)aldehydesRC(=O)NHNH2 (in 1 term)hydrazidesRC(=O)NHOH (in 1 term)hydroxamic acidsRC(=O)OH (in 1 term)oxoacidsRC(=O)SH (in 1 term)thiocarboxylic acidsRC(=S)H (in 1 term)thioaldehydesRC(=S)OH (in 1 term)thiocarboxylic acidsRC(=S)SH (in 1 term)thiocarboxylic acidsRC(=S=O)H (in 1 term)thioaldehyde S-oxidesRC(NH2)3 (in 1 term)ortho amidesRC(NHNH2)2=NNH2 (in 1 term)hydrazidinesRC(OH)3 (in 1 term)ortho acidsRC(OH)=C(OH)C(=O)R (in 1 term)reductonesRC(OH)=NNH2 (in 1 term)hydrazonic acidsRC(OH)=NOH (in 1 term)hydroximic acidsRC(OR')3 (in 1 term)ortho estersRC≡ (in 1 term)hydrocarbylidyne groupsRC≡CH (in 1 term)acetylidesRC≡CNR2 (in 1 term)ynaminesRC≡COH (in 1 term)ynolsRC≡CR (in 1 term)alkynesRC≡N (in 2 terms)carbonitrilesnitrilesRC≡N+–C−R2 (in 1 term)ylidesRC≡N+N−–R (in 1 term)ylidesRC≡NH+ (in 1 term)onium compoundsRC≡O+ (in 1 term)onium compoundsRCH=C=O (in 1 term)ynolsRCH=NN=CHR (in 1 term)aldazinesRCH=NOH (in 1 term)aldoximesRCH=NR (in 2 terms)aldiminesiminesRCMLn (in 1 term)metal–carbyne complexesRH (in 1 term)diazoamino compoundsRMgX (in 1 term)Grignard reagentsRN: (in 2 terms)amine imidescarbene analoguesRN2+Y− (in 1 term)diazonium saltsRN+≡C− (in 1 term)isocyanidesRN+≡N (in 1 term)diazonium saltsRN2− (in 1 term)imidesRN= (in 2 terms)imidesimino carbenesRN=C=O (in 1 term)isocyanatesRN=C=S (in 2 terms)isothiocyanatesmustard oilsRN=C=Se (in 1 term)isoselenocyanatesRN=CR2 (in 1 term)iminesRN=N–NR2 (in 1 term)diazoamino compoundsRN=N+ (in 1 term)diazonium saltsRN=N. (in 1 term)diazenyl radicalsRN=NNHR' (in 1 term)diazoamino compoundsRN=NO−M+ (in 1 term)diazoatesRN=NOH (in 1 term)diazoatesRN=S(=O)2 (in 2 terms)sulfimidessulfonylaminesRN=S=O (in 1 term)sulfinylaminesRNC (in 1 term)isocyanidesRNHNO (in 1 term)nitrosaminesRO– (in 1 term)glycosidesRO–NO (in 1 term)Barton reactionRO+ (in 2 terms)oxenium ionsoxylium ionsROC(=S)SH (in 1 term)xanthic acidsROCN (in 1 term)estersROH (in 1 term)alkoxidesROM (in 1 term)alkoxidesRON=C: (in 1 term)fulminatesROOH (in 1 term)hydroperoxidesROOOR' (in 1 term)trioxidesROOR (in 1 term)peroxidesROR (in 1 term)ethersRP: (in 2 terms)carbene analoguesphosphanylidenesRP(=O)(NHNH2)2 (in 1 term)hydrazidesRP(=O)(OH)2 (in 1 term)oxoacidsRPH2 (in 1 term)phosphinesRS– (in 2 terms)glycosidessulfenyl groupsRS(=NH)2(OH) (in 1 term)imidic acidsRS(=NH)2=NH2 (in 1 term)sulfonamidinesRS(=NR)2R (in 1 term)sulfonediiminesRS(=NR)NR2 (in 1 term)sulfinamidinesRS(=O)(=NNH2)OH (in 1 term)hydrazonic acidsRS(=O)(=NOH)OH (in 1 term)hydroximic acidsRS(=O)2NHC(=O)R (in 1 term)diacylaminesRS(=O)2NHNH2 (in 1 term)hydrazidesRS(=O)2NR'2 (in 1 term)sulfonamidesRS(=O)2OS(=O)2R' (in 1 term)sulfonic anhydridesRS(=O)2R (in 1 term)sulfonesRS(=O)=NH2 (in 1 term)sulfonamidinesRS(=O)NR2 (in 1 term)sulfinamidesRS(=O)OH (in 2 terms)sulfinamidessulfinamidinesRS(=O)OS(=O)R (in 1 term)sulfinic anhydridesRSnH (in 1 term)hydropolysulfidesRS2H (in 1 term)hydropolysulfidesRS2R (in 1 term)polysulfidesRS3H (in 1 term)hydropolysulfidesRS+ (in 1 term)sulfenylium ionsRS. (in 1 term)sulfenyl radicalsRSb: (in 2 terms)carbene analoguesstibanylidenesRSbH2 (in 1 term)stibinesRSe– (in 1 term)glycosidesRSe(=O)2OH (in 1 term)selenonic acidsRSe(=O)OH (in 1 term)seleninic acidsRSeH (in 1 term)selenolsRSeOH (in 1 term)selenenic acidsRSeR (in 1 term)selenidesRSH (in 1 term)thiolsRSOH (in 3 terms)amidessulfenamidessulfenic acidsRSR (in 2 terms)sulfidesthioethersRTeR (in 1 term)telluridesRX (in 1 term)common-ion effect (on rates)RY (in 1 term)steric effectSn (in 1 term)hydropolysulfidesSbnHn+2 (in 1 term)stibanesSinH2n+1OH (in 1 term)silanolsSinH2n+2 (in 1 term)silanesSm (in 1 term)semiconductor-metal transitionSm2+S2− (in 1 term)valence transitionSmS (in 1 term)semiconductor-metal transitionThO2 (in 1 term)solute-volatilization interference in flame spectroscopyX (in 14 terms)bisecting conformation (eclipsing conformation)charge-transfer reaction in mass spectrometrycross-conjugationdipolar compoundsdual substituent-parameter equationextended Hammett equationextrusion transformationhalonium ionsHammett equation (Hammett relation)insertionisostructural reactionphosphonitrilesprotonated molecule in mass spectrometryumpolungX–N=Z (in 1 term)dipolar compoundsX:–C=Z (in 1 term)dipolar compoundsX' (in 1 term)telomerizationX'' (in 1 term)telomerizationX2 (in 2 terms)excimer lamppseudohalogensX− (in 1 term)common-ion effect (on rates)X−–Y+=Z (in 1 term)dipolar compoundsX−=N–Z+ (in 1 term)dipolar compoundsX−=N+=Z (in 1 term)dipolar compoundsX−=Y–Z+ (in 1 term)dipolar compoundsX+ (in 3 terms)common-ion effect (on rates)ion pairylidesX+–Y–Z− (in 1 term)dipolar compoundsX+=C–Z− (in 1 term)dipolar compoundsX+Y− (in 1 term)ion pairX=Y+–Z− (in 1 term)dipolar compoundsX≡N+–Z− (in 1 term)dipolar compoundsXabc2 (in 1 term)pro-R, pro-SXC6H4GY (in 1 term)cross-conjugationXC6H4Y (in 1 term)Hammett equation (Hammett relation)XH+ (in 1 term)protonated molecule in mass spectrometryXZ (in 1 term)insertionY (in 6 terms)dipolar compoundsextrusion transformationimidesinsertionsteric effectylidesY− (in 2 terms)ion pairylidesYBa2Cu3O7-x (in 1 term)superconducting transitionZ (in 4 terms)dipolar compoundsextrusion transformationimidesinsertionZ− (in 1 term)ion pair returnZ−–X+=YRn (in 1 term)ylidesZ=X+–Y−Rn (in 1 term)ylidesα (in 1 term)syntectic reactionΔE (in 1 term)isostructural reaction