ToNc HqP vA NGHI€].{ CLiU MOI TUoNG QLIAI.{ GIIIA 49 CAU TRUC pHAN TU VOI rsa NANc IJC CHE AN naou KIM LO4,I CUA MQ1 SO HqP CHAT AXETOPHENON _ AROYL HIDRAZON / STTJDY ON[r]
Trang 1PRIICEEIIIHG$ l|F THE rNd ilRTIlIHAt CIII{IERE}ICE
NHAN Drp 50 NAw THANU rAp KHoA HoA Hoc
Trang 2MUC LVC
(coNTENTS)
l TrAn Trung VAT LIEU TIEN TIEN - SIEN CVC: TO HOP DIEN CUC NANO VA DIEN CUC I x6p cAu TRUC EA LoP / ADVANCED MATERIALS FOR NANOELECTRODE ENSEMBLES
AND MULTILAYERED POROUS ELECTRODES
2 L6 eu6c Hr)ng, Vii.Thi Thu Hl, Pham Hdng Phong vd LO Thi Vinh Hqnh M0 PHONG SO 12 TRONG NGHIEN CI-IU DIPN HOA
3 Nguy6n Dric Hirng, J\guy6n Xudn,Thulng xAC DINH THOI GIAN THAM LIOT TOW (TIME OF 2l WETNESS) CUA CAC VLNG KHI HAU VIET NAM
4 L€ euangTudn, phlm Thi Thu., Nguy6n Xu6,n 1!p9t f-tll6n Dirc Hirng ANH UUONG CUA 29 rgi euyeN N$NG THdN, erEN vA D0 THI vrET NAM DEN AN MoN THEP cr3 / EFFECT
OF RURAL MARINE AND URBAN ATMOSPHERIC IN VIET NAM ON CORROSION OF CT3 STEEL
5 Ninh Dfc Hi, Nguy6n Hiru^Doan KHAO SAT KHA NANG BAO VP KIM LOAI_CUA HoP 36 cH,qr a.rvrroTnpl-rN, NcuyEN LrEu DE CH8 TAO TMIDAZOLINE CHAT IJC CHE AN tvtON KIM LOAI CHO NGANH DAU KHI,
6, Ding Nhu T4i, Nguy6n Dinh ThAnh, Ph4m Duy Nam, Holng Thanh Dr?c GOP PHA]{ NGHdN 42
crliriNu cHAf fc cne AN MoN KIM LoAl cuA MQr so AZoMETIN DAY
s-AMINo-2-PHENYLTNDOL
7 ph4m v5n Nhieu, V[ phuong Lion ToNc HqP vA NGHI€].{ CLiU MOI TUoNG QLIAI.{ GIIIA 49 CAU TRUC pHAN TU VOI rsa NANc IJC CHE AN naou KIM LO4,I CUA MQ1 SO HqP CHAT AXETOPHENON _ AROYL HIDRAZON / STTJDY ON SYNTHESIS AND THE IiELATION BETWEEN MOLECULAR STRUCTURE AND CORROSION TNHIBITION OF SOME ACETOPHENONE - AROYL HYDRAZONE
8 L€ Ts Hni NCHTEN cLtJ ToNG HOp MANc pot.ypyRot TREN NEN THEP cr3 BANG 56 PHUdNG PHAP oXI HoA DIEN HoA PYRoL VA KHA NANG CHONG AN UON KIM LOAI CUA MANG POLYPYROL / STUDY ON THE SYNTHESIS OF POLYPYRROLE FILM ON CT3 STEEL BY ELECTROCHEMICAL OXIDATION OF PYRROLE AND THE PROTECTION OF METAL AGAINST CORROSION OF POLYPYRROLE FILM
e Nguy6n rhi HoAi Phucng, chu rhanh P.hong, Mai Xuan qdnq rygHlElJ^g-Y!.vll nqPlT! 63
ETYL NHUA KIEN TRONG THANH PHAN CHAT TAO MANG CUA VECNI BAO Vts BE M4'T
Vo oNG LIEU DAN BANG LATONG / RESEARCHING THE ROLE OF SHELLAC ETHYL ESTE
IN BASE-SUBSTANCE COMPOSITION OF VARNISH TH,AT PROTECT FOR BRASS CARTRIDGE'S FACE
10 V[ Minh Thinh, Mai XuAn Ddng, Trlnh XuAn S6n NGHIEN CUU MQT SO YgL] TO ANH 69
HUONG opN ob BEN ANor cta iHsp cr3 rRoNc MOI TRUONG KIEM CHUA IoN
CLORUA i INVESTIGATING THE INFLUENCE OF SOME FACTORS ON THE ANODIC STABILITY OF CT3 STEEL IN ALKALINE SOLUTION CONTAINING CHLORIDE IONS,
11 Trinh Cuorrg, LAm Nggc Thidm,Trinh Xu6n S6n, Phan Thi Binh QUAN FIE GIUA CAU TRUC 75
VA KHA NANc UC Cm AN UON CUA MQT So B-AMINOXETON / QUANITATIVE STRUCTURE-CORROSION INHIBITION PROPERTIES RELATION-SHIPS OF SOME P AMINOKETONES
Trang 3PNOCEEDINGS SECOND NATIONAL CONFERENCE ON ELECTNOCHEMISTRY AND APPI.ICATIONS
r6xc HqP vA,xcHrpx ctru u6r ruollc euAN cnla cAu rnuc puAN rtr
vor xsA xAwc uc cHE Alr vrbN KrM LoAr DoNG
'
cuA Mgr so Hgr cHAr AxETopHENoN - ARoyL HTERAZoN
CORROSION INHIBITION OF SOME ACETOPHENONE - AROYL HYDRAZONE
Phgm VIn Nhi€u, Vii phucng Li6n Khoa H6a hqc - Trudng Dqi hoc Khaa hoc Ttt nhi€n - DHeGnN SUMMARY Some hydrazones from hydrazides of substituted btenzoic acids with 2, s dihidroxyacetophenones have been prepared by the condensation ofhydrazides ofsubstituted benzoic acids with 2, 5 dihldroxyacetophenones The structure of these products have beZn determined by IR, 'H-NMR and MS specnoscopiis
Some acetophenone - aroyl Hydrazone compounds have been studied by the inhibition of copper corcosion in 3N nitric acid solution The structure of some acetophenone - aroyl iydriron" compounds were optimized and calculated by using the ZINDO/I method of the quantum chemical program HyperChem 7.0,
Results of the above calculation is coordinated with inhibition eficiency (P) that is dertermined by experimentation and both are apptiei to Statgraphic software to carry out linear regression
I MO DAU
An mdn kim loai li str ph6 hu! kim lo4i vA hqp kim do t6c d6ng li h6a cta m6i tru&ng I{gu quA cira sg [n mdn kim lo4i ld lim thay d6i tinh ch6t, suy gi6m nhirlu chirc ndng cira kim lo4i vi hqp kim, ddn.t6i giim tu6i thg cria c6c thi6t b!, c6ng trinh; gdy nhidu tdn th6t cho h0 sinh th6i vd n€n kinh t6 qudc d6n c0a b6t h qudc gia ndo Su [n mdn kh6ng bao gid ngimg, nhung phsm vi vi mrtc d0 c6 thii giAm dusc nhd c6c bipn ph6p ch6ng 6n mdn Trong s6 c6c phuong ph6p bAo vg, ch6ng dn mdn kim loai thi phuong ph6p sri dung ch6t ric chii da,rrg dugc ring dgng mQt c6ch rQng rdi do viQc sti dung thu6n lgi vd
dE dang hon so v6i c6c phuong.ph6p kh6c V6n dd dit ra ld: phdi tim dugc ch6t rlc chiS an mdn c6 hi€u qui nh6t cho trmg lo4i vflt lipu vi trong timg mdi truong cU rhe [4J
Trong doi s6ng vi ki thuflt, Cu vi hqp kim cria Cu dugc sri dgng trong cr{c hQ th6ng nhi6t, c6c
bQ ph{n ngung tp hoi nudc C6c hQ thting ndy thuong bi bao phn bdi c6c lop pacbonat vd oxit Tr6n thyc t6, nguoi ta thuong dirng c6c dung dich axit HNOr hoac HCI ae tarn sach c6c b€ mat ndy Nhung trong mdi trudng axit hay nudc tg nhi€n (c6 FICO3-, COz, Oz), Cu vd hqp kim cria Cu dE bi hoa tan tfrdnh Cu2* MQt trong s6 c6c hu6ng Ce nric phgc sg dn mdn Cu trong c6c m6i trudng d6 ld sri dr,rng c,h6t ric chri Cac ch6t ric ch6 an mdn thudng duoc su dpn, la cfuc chdthftu co c6 chria cdc nguy€n t5 O,
Ciic c6ng trinh nghiOn cftu gAn dey [1-3] cho thdy c6c hgp ch6t axetophenon aroyl hydrazon c6 khi ning tc ch6 6n mdn kim loai Cu trong mOi trudng axit HNOr 3N Chtng t6i da mri rQng vd ph6t tri6n phuong hudng nghi€n criu ndy vd dd c6 mQt sii c6ng bd [-3] Trong bii b6o ndy chtng t6i tiiip (rc th6ng b6o sU t6ng hqp vi kh6 ning ric ch6 an mdn cta cilchidrazon tuong tg, cli tir cfc hqp chdt ?,
5 dihidroxiaxetophenon v6i hidrazit cria c6c axit benzoic th6
ruvtn rAP cAc coxc rRixn rcro.l noc HOr Ncrrl roAx eu6c o4n n6a vA (rxc nqxc llAn nr1r zy r yzooe
4 9
Trang 4-rr Trr{c NGHTFM ve, xtr euA
O H
o c o c H s
o c o c H 3
?"
Arch> (-tr_c;o
\./ CHr
I
O H
Cdc hqp phdn (hu6) dugc tdng hqp tu axit benzoic c6 nh6m thi5 0 vi tri ortho, meta vi para
cooH
A
\)r
coocH3 , (A- *Nz[I+.HzO s5%o
- cH3oH
f T6ng hgp mQt s6 tgp cnAt 2,5 tlihiilroxiaxetophenon benzyl hydrazon [ll
'Iheo ss dd sau:
O H
(IIrt ro) ( r r - r f )
HzN-v iH, O H -""-E-(> +Ho- fr-:;l-""-8@.O H
(l l-16: R: o, m, p -NOzi o-OH; m-CHr; o-NH) Hgp phdn g) duqctdng hqp bdng c6ch este h6a hidroquinon, sau d6 chuy6n vi F'ries vdiAlClr khan lim xric t6c I l]
O H
a \ + ( c H 3 c o ) 2
\-.ll H'so;*
I
O H
K& qud ft)
Tr€n ph6 hilng ngo4i cua cic hidrazon nhin elugc tt€u th6y xu6t hien c6c vnch d{c tnmg cho
dao dQng h6a tri cta 2 nh6m OH phenol O virng 3223-3339 cm'l.cria nh6m NH amit 6 virng 3248-3260 cm-r, clia C=N d vtng l6l0-1625 cm-r, cria nh6m CO amit 0 virng l6l0-1650 cm-r, cta nh6m NO2 d virng 1524-1541 cm-r vi 1348-1387 cm-r, vi cta nh6m CHr d ving 1532-1530 cm't
Tr€n ph6 IH-NMR thAy xu6t hiQn cric tfn hiQu tmg v6i chuy6n dich h6a hec ctra cfc proton trong phdn tu: 6wH: 8,841-8,914 ppm; 6es: 12,450-12,669 vi 10,742'11'573 ppm; 6ss:2,377- 2,501 ppm; cdn cic proton thorn c6 chuy6n dich h6a hgc d 6,613 -8,737 ppm
TrOn ph6 khdi luqng ctra c6c hidrazon th6y xu6t hiQn pic ion phdn tu c6 sO kh6i ptrt hqrp v6i ph6n tri ttrOi va c6c pic kh6c c6 sO tctrOi phn hqp v6i c6c ion mdnh trong so tt6 phin mdnh
Nhu vfy, cdc dfr kipn ph6 h6ng ngo4i, ph6 cQng huong tu proton vn ph6 khSi luqng tll chimg minh cic hqp ch6t 2, 5 dihidroxiaxetophenon benzyl hydrazon.md chfng tdi tOng hqp dugc ld tfiing.
2 Khf,o sit cdu trrric phf,n trl cria mQt sii hqp chdt axetophenon benzyl hyclrazon
St dgng phAn m€m HyperChem 7.0 [0] aC nrao s6t c6u trric phdn tri cria c6c hgrp chAt axetophenon aroyl hydrazon bing phuong ph6p b6n kinh nghiQm Cdn cu vio c6u truc ctra c6c hgp chdt nghiOn criu
th6ng qua este trung gian, rOi tii6p tgc ngtmg tg este vdi hydrazin hydrat 35% [3]
+ CHsOH
p H2SOa
66
Trang 5chring t6i de tinh to6n c6c th6ng si5 luqng tu bing phuong ph6p ZINDO/I cho mQt sd phdn tir axetophenon benzyl hydrazon.
C6c phdn tu md chring t6i tii5n hdnh nghi€n oriu bao gdm:
A":*-rn-c-A A-.:*-rw-c ,2\
uL-cHr R= or mJ p_NO2; o_OFI;o_NHz R= o- m- p_NO2 i o_OH;m_CH, R= o- m- p_NO2; o OH; m_Ct! ; o_NH,
(r) (z) (r) (s) (4) (6) (?) (8) (e) (l0 0D (z) (:) (s) (t (e)
c i l c t h a m s t i l u g n g t u t h u d u o c t u t i n h t o r 4 n d u o c t r i n h b d y t r € n c 6 c b 6 n g s o t i e u l , ? , 3
Bdng L Cdc gid tri ndng luqng, nhiet hinh thdnh, momen ludng cyc cia cdc phdn t*
4 08879.29 1 8 5 0 4 -565776.92 -7382.04 5 3 5 3
l 0 11616.76 2366.41 -600030.39 - 8 1 7 8 3 3 6 r 9 0
Trongd6: E61o6 Ndng tuqng iling hqp c,ia phdn t* ftcal/mol); Ea: Ndng lrqng liAn kit (kcat/mol); E,: Ndng
lugng electron ftcaUmol); AH: Nhi€t hinh thdnh (kcal/mol); p: Momen ludng cyc (D)
,4.:*-*'-S-A
V t", 6 \-J-*
I
OH
ine 2 MOt sd tham s6 c,iu tril MAt s6 tham s6 cdu truc
- 5 1
Trang 6-3 MAt iI| dien tieh ffAn cdc hT
Phdn tu Z m t t > e t Z ^," ,^,-*r a,
iZJ N(: 'Nd: I
Trong tl6: Ze61s,cy, ZNc (N{), ZNn (n-n): Li mflt tlQ tliQn tfch tr6n cic nguy6n tfr O vi N d cdc vi tri tuong (rng
3 Khio sdt khe nlng rfrc ch6 nn mdn Cu trong mdi trubng HNOr 3N cta mQt s5 hgp chit axetophenon benzyl hydrazon
X6c dlnh khA ntrng ric chti qu6 trinh in mdn Cu trong m6i trudmg axit HNO3 3N kh6ng c6 mit vi c6 m{t c6c hqp chdt axeto phenon benzyl hydrazon v6i ndng dO l0rM bing phuong phdp dipn h6a, sri dpng phdp tlo tluong cong phen cgc bing thiiit bi PotentioGalvanostat v6i hQ ttiQn h6a g6m 3 diQn cgc:
DiQn cuc so sdnh (RE) - tli0n cUc bac; di9n csc phu - platin (ft) va diQn cuc lim viOc (WE) - diQn cyc
tliing c6 di€n tich S = 0,07 cm2
Phdn cgc anot, catot, x6y dpg aO tni (8, i) vd (E, lgi) Ngo4i suy theo phuong ph6p ngo4i suy Tafel Tinh tdc dQ [n mdn theo mflt <lQ ddng dn mdn i"- vi tinh duo c hipu su6t tc ch6
Kdt qun thu dusc ghi d bAng 4
Trong il6: Eruuo: Ndngluqng obitan phdn tu chua bi chidn thiip nhdt
Eaouo: Ndng fuqng obitan phdn nh bi chiiim cao nhdt S: Di€n tlch bA mft cia phdn ti, (A)t; v: Thti tlch ph6n t* (A)t
4 Khio sft m5i tuang quan gi&a c6u trrric phin trfr vt khi nlng rfrc ch6 ln mdn Cu trong m6i trudmg HNOr 3N cfra mQt s5 hgp chAt axetophenon benzyl hyilrazon
C6c th6ng s6 luqng tir thu dugc tu tinh to6n lugng tu k6t hgp v6i hiQu su6t.uc chp 6n mdn (P) thyc nghigm a-oos Co" vao phAn mAm Statgraphic dA thgc hiQn phep h6i qui tta bi6n, th6 hiQn m6i quan hQ gita hiQu su6t ric ch6 en mdn thgc nghiQm vsi c6c th6ng sO lugng tu ctia c6c chdt rlc ch€.
Phuong trinh hdi qui c6 dgng:
aQ
Bdng 4 Hi€u sudt thvc nghiQm
HiQu
su6t
fc chi!
55.9 56.8 5 1 9 65.4 54.9 70.6 76.8 72.6 84.2 8E.5 6 8 5 76.7 67.4 86.3 E2.2 88.4
Trang 7P = Z k , X n + c o n s t
P : I{iQu suAt bio vQ cta c6c ch6t ric chti t,: Hg s6 cria phuong trinh h6i qui X,: Cdc yiiu t6 hdi qui (dnh huong) Phuong trinh hdi qui cho P sdt vdi gid tri thvc nghiQm nniit (fi*= 0.9S3S) c6 dqng:
P = 106.16 +1082.862r" -51 48zNH -313.302oc+1.52p+0.251/ +38.6sEHoMo-5.76ELUM, (')
y = 0.9671x+ 2.5858 R2 = 0.9948
Ilinh l Tuong quan tuydn tinh gi{ia Pyyvd Ps theo phuong tinh (*)
rrr THA0 LUAN
l Tir cic s6 tiQu thu ilugc trong cfc bing ghi & tr6n chrfng t6i nh$n thdy ring
C6c th6ng s5 nhu S; V; p hAu nhu {t enh hudrng toi higu su6t tic ch6 en mdn (ftr= 1.52; k= 0.23; k"= 0.25) Trong khi d6 m6t d0 diOn tich tr6n cdc trunrg t6m hAp phs Zxc; Zysi Zoc lti anh huong lon tdi higu su6t ric chiS 6n mdn.
M{t kh6c, khi phAn tich ki5t qui ph6p h6i qui tt6 chi ra ring v6i cdng nhidu yiiu t6 enh huong cta c6u truc thi kiit quA cua him muc 1i€u P cing s6t vdi thtrc nghi€m Nhtng kilt qui ndy s€ gitip ta giii thfch tlugc khi ning ric chii en mdn khdc nhau cta cic hydrazon, vd d1r ttorin khi ning fc ch6 an mdn ctra mQt s6 hydrazon kh6c chua ttuqc t6ng ho-p.
2 Dg ilodn khi nlng rtc chd ln mdn Cu trong m6i trufng HNOr 3N cfra cdc dfin xuit khfc c&a logi ngp cndt hihr cc trGn, ddng thdi c6 tn6 ni6m tia l4i itQ tin ciy cta phuong trinh hdi qui thu iluqc
Si dsng phuong trinh hdi qui (*) ttA ngoai suy tltii vdi m$t s6 Odn xu6t kh6c cta loai hqp ctrAt axetophenon benz.yl hydrazon K6t qun thu duEc ghi trong bang 6.
C = N _ - N H - C
hang S Hi€u suiit thyc nghismvd Hi€u suiit ti thuydt theo phucmg trinh (*)
P]}t 5 5 956.8 5 l 9 65.4 64.9 70.6 76.8 72.6 84.2 8 8 5 68.5 76.7 67.4 86.3 82.2 88.4
Pr.r 57.2 58.3 52.r 66,6 66.1 70.5 78.0 7 1 9 8 3 6 88.4 67.2 77.2 66.8 86.8 82.3 87.3
- : t 3
Trang 8-Bdng 6 Hi€u sudt bdd vQ dv ilodn ifusc tinh qua phuong triilh hii qui (*)
STT R Z r ( v c ' t Z N H (N - n ) Z Nc (N=c) Elu'vo Esouo V(A), p PDD(%)
l 8 4 -OH -0.415 - 0 1 5 9 - 0 1 I I 5 5 6 1 -5982 808.888 9.228 8 1 0
l 9 2 -CHt -0.419 - 0 1 5 9 - 0 1 I I 5.582 -5.936 827.655 7.932 86.8
20 4 -CHr -0.413 -0.158 - 0 1 I I 5.545 -5.925 839.396 9 1 8 0 90.3
2 l 3 -NHr -0.407 -0.156 -0.n2 5.565 -s.936 824.389 8.633 83.7
22 4 -NH? -0.420 - 0 r 5 9 -0.109 5 7 4 8 -5.860 824.3s5 1 0 1 3 8 93.7
XCt dnh huhng crta bdn chfu n:hdm thd vd v! trf crta nd rtt vdi hi.Au sadt hilo vp ch6ng dn mbn kim
lagi Cu trong mdi trudng HNOt 3N
5 ( R r , R z )
Kiit hqp sti tigu o bang 5 vd b6ng 6, chring t6i nh{n th6y vd cho ring:
- HiQu sudt bio vQ ch6ng in mdn kim loai r ((O)"(Zz\), e(t)+(S)), vi trong c6c phdn tu
(A)+(ZZ) c6 th€m I nh6m -CH3 hay I nh6m -OH (b€n nh6nh trdi cira ph6n tu) so vdi c6c phdn tu
(t)-(5).-CH3, -OH, ld cdc nh6m dAy electron m4nh vio hQ li€n hgrp n€n/dm ting mat d0
electron tr€n c6c trung tdm hAp phg, ldm tlng hipu sur6t ric chi5 dn mdn.
OOi vOi nh6m th6 R = NO2: P (o_R); P (p_R) < P (m_R) P (R = NOz) < P (R = NH2, CH3, OH),
vi nh6m thiS NO2 c6 tl6c tfnh 6i etectron lon nhdt itOmg thUi cdn c6 khd ndng hydrat h6a trong m6i
trudng axit tr€n b€ mat d6ng n6n cing ldm ginm khd n[ng rtc chiS an mdn cria phdn tu
O O i v O i n h 6 m t h i S R : N H 2 , C H r , O H : P ( m * R ) ; P ( o _ R ) < P ( p _ R ) P h d n r u c h r i a ( p _ R ) c 6 k h i ndng ric ctr6 tOt nhAt vi khi d6 c6 cric higu ung kh6ng gian cria phdn tu kh6ng ngin cin khi ning
phdn ung hay hdp phs cua ciic trung tdm h6p phg vdi bd m4t kim loai Khi R o vi trf (m-R) hay
(o-R) thi higu ung kh6ng gian cria phdn tu dd cdn trd c6c trung t6m phin img hay qud trinh h6p
phg l€n b6 mit kim loai lim phdn ttl c6 khi nlng rlc ah6 an mdn kim lo4i k6m hon
OOi vOi nhBm thti R =.NHr, CH3, OH khi o cirng c6c vitri thti -ortho, -meta, -para tuong img: P
LOH) < P LCH3) < P LNH2) N cira nh6m -NHz c6 th6 d6ng vai trd nhu mQt trung tdm hoat
dQnS tim tlng s6 trung tdm ho4t dQng cria phin tu chrta nh6m -NHz l€n b5n trung tim Mit ttQ
iliSn tich ciF nh6m -CH: nh6 hon so vdi nh6m -NFIz n€n phdn tu chria nh6m -CHr c6 ba trung
*6m ho4t tlQng vi c6 khi nlng ric chlS an mdn cao nhmg th6p hon so vdi phin tu chta nh6m
-NHz NhOm -OH c6 cirng si5 trung tdm h6p php nhmg theo chiAu tir NH2, -CHr, ddn -OH c6 tinh
bazo giimdin n€n phin tu chria nh6m -OH c6 khi ning ric chi5 yilu hon
Phan tir hydrazon chrla nh6m thg -R dAy electron cdng mgnh, vd o vi trf thti para s€ cho higu su6t
b6o vQ ch6ng 6n mdn kim loai Cu trong m6i trulng HNOr 3N:
O H
r l , 4 Y c : N - N H - c
-l l l l l l
t V , C H r o
t'
O H
Trang 9rv Ktr LUaN
ftit hqp c6c th0ng s6 c6u trric phdn tu dugc tfnh bing phuong ph6p luqng ru b6n kinh nghiQm v6i c6c kiit qua ric chti 5n mdn kim lo4i Cu cria mQt s6 hqp ch6t hydrazon, ta c6 thr3 thiiit bp duoc phuong trinh h6i qui biiiu di6n m6i quan hQ gita hiOu su6t ric ch6 in mdn Cu vd c6c th6ng s5 cAu truc cria c6c phdn
tu hydrazon.
Phuong trinh hdi qui thu du-o c sE girip ta giii thfch duqc khi n6ng ric chti en mdn kh6c nhau cria c6c hydrazon, vi dg dorin khi ntrng ric chti an mdn cta mQt s6 hydrazon chua dugc tdng hqp, dinh huong cho viQc t6ng hqrp hiru co, tii5t kiem duo c nhiAu thoi gian trong viQc tim kii5m ch6t ric chi5 hicu qui cao d6i vOi Cu.
Khi ning rlc ch6 6n mdn Cu cria c6c hydrazon tr6n phg thuQc vdo mft dQ electron tr€n c6c trung tdm h6p phq trong phdn tu Cing nhiAu nh6m dAy electron (-NHz, -CHr, -OH) trong phan ttr thi m4t d0 electron t?i c6c trung tdm hAp php cdng lon vd khd n6ng ric ch6 an mdn cdng cao.
TAI LIEU THAM KHAO
tl I Vfr Phuong LiEn, Tdng hqp vd nghi€n ctint m6t hrong quan gifra cdu *ic phdn ni vd khd ndng thc chd
dn mdn kim logi Cu trong m6i nudng HNA3 3N cia mdt s6 hqp chdt 2, 5 dihiilroxi meto phenon benzyl hydrazon, Kh6a lu{n t6t nghi€p, Ha NQi, 2004
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