Synthesis,Crystal Structure and Theoretical Calculation of 1,1',5,5'-Tetramethyl-2,2'-diphenyl-4,4'-[i-phenylene-bis(methylidy-nenitrilo)]di-1H-pyrazol-3(2H)-one.pdfVIP
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Synthesis,Crystal Structure and Theoretical Calculation of 1,1',5,5'-Tetramethyl-2,2'-diphenyl-4,4'-[i-phenylene-bis(methylidy-nenitrilo)]di-1H-pyrazol-3(2H)-one.pdf
30卷 6期 结 构 化 学 (脚 GD ) Vbl_3O.No.6
2011.6 Chine3e Struct. Chem. 887~891
Synthesis,CrystalStructureandTheoretical
Calculationof1,1,5,5-Tetramethyl-2,2一
diphenyl-4,4-[i-phenylene-bis(methylidy-
nenitrilo)]di.1H.pyrazo1.3(2H)一one①
LIU Shan..Bin BICai..Feng~ FAN Yu
. .Hua
ZUO Jian LIUXin-·Yu ZHENGYu--Ping
(KeyLaboratoryofMarineChemistryTheoryandTechnology,MinistryofEducation,Collegeof
ChemistryandChemicalEngineering,OceanUniversityofChina,Qingdao266100,China)
ABSTRACT 1,1,5,5一Tetramethyl一2,2-diphenyl一4,4fl[i—phenylenebis(methylidynenitrilo)]di一
1H-pyrazol一3(2H)一onewassynthesizedandcharacterizedbyX—ray single-crystaldifrfaction
analysis.Thecrystalcrysatllizesinmonoclinic,spacegroup1921/cwitha=6.1375(1),b=
24.6571(4),C=17.7487(3)A, =94.781(1)。, =2676.62(8)A,C30H28N602,Mr=504.58,Z=4,
=1.252g/cm~,F(ooo)=1064, =0.081mm,R=0.0463andwR=0.1153(,2 ).
Theoreticalstudiesofthetitlecompoundwerecarriedoutbydensityfunctionaltheory (DFT)BLYP
method,usingADFprogrampackage.ItindicateshtatN(26)andN(41)areactivesitesofhtetitle
compound.
Keywords:Schiffbase,crystalstructure,quantum chemistrycalculation
1 INTRoDUCTIoN ylene-·bis(methylidynenitrilo)]di-·1H-pyrazol--3(2H-·
onewassynthesizedfirstly,anditscrystals仃ucnlre
4-AminoantipyrineISna aromaticsubstancewitl1 wasthen determined.Based on htecrysatldata,
analgesic,anti-inflammatory and antipyreticpro— densityfunctionaltheory(DFT)sutdiesofthetitle
perties.Althoughtoday4-aminoantipyrineis
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