研究生: |
黃進松 Huang Gin-Song |
---|---|
論文名稱: |
雙(2-啶甲基)胺和2-(2-啶乙基)(2-啶甲基)胺之二價銅錯合物的合成、結構及鍵結研究 Synthesis, Structures and Bonding Properties of bis(2-pyridylmethyl)amine and 2-(2-pyridylethyl)picolylamine of Copper(II) Complexes |
指導教授: |
蘇展政
Su, Chan-Cheng |
學位類別: |
博士 Doctor |
系所名稱: |
化學系 Department of Chemistry |
畢業學年度: | 87 |
語文別: | 中文 |
論文頁數: | 300 |
中文關鍵詞: | 三牙基 、高斯交疊解析 、錯合物 、混合配基 、二價銅 、二價鎳 |
英文關鍵詞: | complex, Gaussian, copper, nickel, vanadium |
論文種類: | 學術論文 |
相關次數: | 點閱:181 下載:3 |
分享至: |
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報 |
中文摘要
本研究以三牙基雙(2-啶甲基)胺(C12H13N3)及
2-(2-啶乙基)(2-啶甲基)胺(C13H15N3)為主要配子,合成下列二價銅及鎳的錯合物。包括六配位的錯合物:cis-fac-[Cu(dipica)2](ClO4)2、trans-fac-and sq-py-[Cu(dipica)2](ClO4)2、trans-fac-[Cu(pepica)2](ClO4)2、trans-fac-[Ni(dipica)2]Cl2.4H2O、trans-fac-[Ni(pepica)2]Cl2.2H2O;五配位的混合配基錯合物:[Cu(pepica)(bipy)](ClO4)2、 [Cu(pepica)(phen)](ClO4)2、[Cu(pepica)(neoc)](ClO4)2、 [Cu(pepica)(en)](ClO4)2、
[Cu(pepica)(pico)] (ClO4)2.(H2O)、[Cu(dipica)(neoc)](ClO4)2.(H2O)、[Cu(dipica)(bipy)](ClO4)2、 [Cu(dipica)(phen)](ClO4)2、 [Cu(dipica)Cl2];四面配位的混合配基錯合物:[Cu(dipica)(H2O)](ClO4)2、 [Cu(dipica)(4ampy)](H2O)(ClO4)2、[Cu(dipica)(4phimH)](ClO4)2、[Cu(dipica)(4dmampy)](ClO4)2、[Cu(dipica)(nmim)](ClO4)2、 [Cu(dipica)(2mimH)](ClO4)2、[Cu(dipica)(4mimH)](ClO4)2、[Cu(pepica)(4dmampy)](ClO4)2、[Cu(pepica)(3mpy)](ClO4)2、 [Cu(pepica)(4mpy)](ClO4)2、
[Cu(pepica)(imH)](ClO4)2、 [Cu(pepica)(4mimH)](ClO4)2、 [Cu(pepica)(4ampy)](ClO4)2;雙核錯合物[Cu2(pepica)2Cl3]Cl;還有釩的含氧錯合物[VO2(bipy)](CF3SO3)和(C4H7N2)6V10O28.3H2O。
利用元素分析及紅外線光譜來確定錯合物的組成。紫外-可見光光譜、電子順磁共振光譜和X-光單晶繞射結構解析等方法,研究錯合物分子構造、軌域能層分佈及鍵結性質。錯合物的X-光單晶繞射結構解析,其資料如下:
(1) cis-fac-[Cu(dipica)2](ClO4)2,斜方晶系,空間群F2dd,晶格常數a = 8.832(5) A,b = 22.129(5) A,c = 28.428(8) A。晶胞值為4,精
算值R = 0.036,Rw = 0.023。
(2) trans-fac-and sq-py-[Cu(dipica)2](ClO4)2,單斜晶系,空間群P21/n,晶格常數a = 23.624(4) A,b = 9.369(4) A,c = 25.798(5) A,β = 95.60(2)°。晶胞值為4,精算值R = 0.059, Rw = 0.061。
(3) trans-fac-[Cu(pepica)2](ClO4)2,斜方晶系,空間群Pcab,晶格常數a = 12.028(4) A,b = 13.815(3) A,c = 17.701(5) A。晶胞值為4,精算值R = 0.050,Rw= 0.038。
(4) [Cu(pepica)(bipy)](ClO4)2,單斜晶系,空間群P21/c,晶格常數a = 12.98(2) A,b = 8.89(1) A,c = 22.61(3) A,β= 96.19(1)°。.晶胞值 為4,精算值R = 0.0732,Rw = 0.0859。
(5) [Cu(dipica)(phen)](ClO4)2,單斜晶系,空間群P21/n,晶格常數a = 13.627(4) A,b = 9.259 A (3),c = 21.926(4) A,β= 106.71(2)°。
晶胞值為4,精算值R = 0.0530, Rw = 0.1525。
(6) [Cu(dipica)(nmim)](ClO4)2, 三斜晶系,空間群P1, 晶格常數 a = 8.4795(2),b = 8.6999(2), c = 16.4869(3) A;α= 78.821(1),β= 82.938(1),γ = 62.619(1)。晶胞值為2,精算值R = 0.0511, Rw = 0.059.
(7) [Cu(pepica)(4mpy)](ClO4)2, 三斜晶系,空間群 P-1,晶格常數 a = 8.690(3), b = 8.808(3), c = 18.017(6) A; α = 76.65(3), β = 81.52(3),γ = 63.16(3)°。晶胞值為2,精算值R = 0.080, Rw = 0.087。
(8) [Cu(pepica)(imH)](CH3CN)(ClO4)2,單斜晶系,空間群P21 /n , 晶格常數a = 9.478(3),b = 8.205(2),c = 30.76(1) A; β = 93.11(3)°。
晶胞值為4,精算值R = 0.061,Rw =0.068。
(9) [Cu(dipica)Cl2],單斜晶系,空間群P21/m,晶格常數a = 6.535(1) A,b = 13.375(3) A,c = 7.953(1) A,β = 103.38(1)°。晶胞值為4,精算值R = 0.028,Rw = 0.026。
(10) [Cu2(pepica)2Cl3]Cl,單斜晶系,空間群P21/n,晶格常數 a 8.960(2) A,b = 13.008(3) A,c = 24.861(7) A,β = 91.210(2)° 。晶胞值為4,精算值R = 0.029,Rw = 0.026。
(11) [Ni(dipica)2]Cl2. 4H2O,三斜晶系,空間群P-1,晶格常數a
8.756(2) A,b = 9.449(3) A,c = 9.542(3) A,α= 74.10(3) ,β = 86.15(2) ,γ= 80.52(2)°。晶胞值為1,精算值R = 0.046,Rw =
0.055。
(12) [Ni(pepica)2]Cl2. 2H2O,單斜晶系,空間群P21/n,晶格常數a
9.231(1) A,b = 9.016(1) A,c = 16.746(3) A,β = 104.01(1)° 。晶胞值為2,精算值R = 0.045,Rw = 0.037。
(13) [V(O)2(bipy)2](CF3SO3),單斜晶系,空間群P21/n,晶格常數a
15.433(2) A,b = 11.013(2) A,c = 27.423(2) A,β = 104.79(2)°。
晶胞值為4,精算值R = 0.0697, Rw = 0.0821。
(14) (C4H7N2)6V10O28.3H2O,三斜晶系,空間群P-1,晶格常數a = 9.596(2) A,b = 11.487(3) A,c = 12.318(2) A,α= 93.77(2),β = 102.73(2),γ= 106.73(2)°。晶胞值為1,精算值R = 0.032,Rw = 0.029。
比較錯合物的紫外-可見光光譜高斯交疊解析結果,對於固態及溶液態的cis-fac-[Cu(dipica)2](ClO4)2,其d軌域順序: dx2-y2 >> dz2 >
dxy > dyz > dxz;對於固態的trans-fac-[Cu(pepica)2](ClO4)2,dx2-y2 >> dxy > dz2 > dyz > dxz ;對於溶液態的trans-fac-[Cu(pepica)2](ClO4)2,dx2-y2 >> dxy > dyz ~ dz2 > dxz ; 對於溶液態的[Cu(pepica)(bipy)](ClO4)2、 [Cu(pepica)(phen)](ClO4)2、[Cu(pepica)(neoc)](ClO4)2、
、Cu(dipica)(neoc)](ClO4)2.(H2O)、[Cu(dipica)(en)](ClO4)2 、[Cu(pepica)(pico)](ClO4)2.(H2O), dx2-y2 >> dz2 > dxy > dyz ~ dxz ;對於溶液態的[Cu(dipica)(bipy)](ClO4)2、[Cu(dipica)(phen)](ClO4)2,dx2-y2 >> dz2 > dxy > dyz > dxz ;對於溶液態的[Cu(dipica)(L)](ClO4)2及 [Cu(pepica)(L)](ClO4)2,dx2-y2 >> dxy dyz > dxz > dz2。
Abstract
The following Cu(II) complexes have been synthesized:
cis-fac-[Cu(dipica)2](ClO4)2, trans-fac-and sq-py-[Cu(dipica)2](ClO4)2, trans-fac-[Cu(pepica)2](ClO4)2, [Cu(pepica)(bipy)](ClO4)2, [Cu(pepica)(phen)](ClO4)2, [Cu(pepica)(neoc)](ClO4)2, [Cu(pepica)(en)](ClO4)2, [Cu(pepica)(pico)] (ClO4)2.(H2O), [Cu(dipica)(neoc)](ClO4)2.(H2O), [Cu(dipica)(bipy)](ClO4)2, [Cu(dipica)(phen)](ClO4)2, [Cu(dipica)(H2O)](ClO4)2,
[Cu(dipica)(4ampy)](H2O)(ClO4)2, [Cu(dipica)(4phimH)](ClO4)2, [Cu(dipica)(4dmampy)](ClO4)2, [Cu(dipica)(nmim)](ClO4)2, [Cu(dipica)(2mimH)](ClO4)2, [Cu(dipica)(4mimH)](ClO4)2, [Cu(pepica)(4dmampy)](ClO4)2, [Cu(pepica)(3mpy)](ClO4)2, [Cu(pepica)(4mpy)](ClO4)2, [Cu(pepica)(imH)](ClO4)2, [Cu(pepica)(4mimH)](ClO4)2, [Cu(pepica)(4ampy)](ClO4)2, [Cu(dipica)Cl2], [Cu2(pepica)2Cl3]Cl, trans-fac-[Ni(dipica)2]Cl2.5H2O, trans-fac-[Ni(pepica)2]Cl2.5H2O, [VO2(bipy)](CF3SO3), and (C4H7N2)6V10O28.3H2O.
These complexes have been characterized by elemental analyses, IR,UV-VIS and EPR spectroscopic measurements. X-ray crystal structures of the following complexes have been determined by using three-dimensional X-ray diffraction data.
(1) cis-[Cu(dipica)2](ClO4)2, orthorhombic, space group F2dd, a
= 8.832(5) A, b = 22.129(5) A, c = 28.428(8) A, Z = 4, R = 0.036, Rw = 0.023.
(2) trans-fac-and sq-py-[Cu(dipica)2](ClO4)2, Monoclinic, space group P21/n, a= 23.624(4) A, b = 9.369(4) A, c = 25.798(5) A,
β = 95.60(2)°, Z = 4, R = 0.059, Rw = 0.061.
(3) trans-fac-[Cu(pepica)2](ClO4)2, Orthorhombic, space group Pcab ,a = 12.028(4) A, b = 13.815(3) A, c = 17.701(5) A, Z = 4, R = 0.050. Rw= 0.038.
(4) [Cu(pepica)(bipy)](ClO4)2, Monoclinic, space group P21/c, a
= 12.98(2) A, b = 8.89(1) A, c = 22.61(3) A, β = 96.19(1)° , Z = 4, R = 0.0732, Rw = 0.0859.
(5) [Cu(dipica)(phen)](ClO4)2, Monoclinic, space group P21/ n, a = 13.627(4) A, b = 9.259 A (3), c = 21.926(4) A, β= 106.71(2)°, Z = 4, R = 0.0530, Rw = 0.1525.
(6) [Cu(dipica)(nmim)](ClO4)2, Triclinic, space group P-1, a
8.4795(2), b = 8.6999(2), c = 16.4869(3) A; α = 78.821(1),
β = 82.938(1), γ= 62.619(1), Z = 2, R = 0.0511, Rw =0.059.
(7) [Cu(pepica)(4mpy)](ClO4)2, Triclinic, space group P-1, a
8.690(3), b = 8.808(3), c = 18.017(6) A; α= 76.65(3),β = 81.52(3),γ = 63.16(3), Z = 2, Rf = 0.080,Rw =0.087.
(8) [Cu(pepica)(imH)](CH3CN)(ClO4)2, Monoclinic, space group P21/n a = 9.478(3), b = 8.205(2), c = 30.76(1) A; β = 93.11(3), Z = 4, R = 0.061,Rw =0.068
(9) [Cu(dipica)Cl2], Monoclinic, space group P21 / m, a =6.535(1) A, b = 13.375(3) A, c = 7.953(1) A, β = 103.38(1) , Z = 4, R = 0.028, Rw = 0.026.
(10) [Cu2(pepica)2Cl3]Cl, Monoclinic, space group P21/ n, a 8.960(2) A, b = 13.008(3) A, c = 24.861(7) A,β = 91.210(2) , Z = 4, R = 0.029, Rw = 0.026.
(11) [Ni(dipica)2]Cl2. 4H2O, Triclinic, space group P-1, a 8.756(2) A, b = 9.449(3) A, c = 9.542(3) A, α= 74.10(3) , β = 86.15(2) , γ= 80.52(2) , Z = 1, R = 0.046, Rw = 0.055.
(12) [Ni(pepica)2]Cl2. 2H2O, Monoclinic, space group P21 / n, a
9.231(1) A, b = 9.016(1) A, c = 16.746(3) A, β = 104.01(1) , Z =2. R = 0.045, Rw = 0.037.
(13) [V(O)2(bipy)2](CF3SO3), Monoclinic, space group P21 / n, a
15.433(2) A, b = 11.013(2) A, c = 27.423(2) A, β = 104.79(2) ,
Z = 4, R = 0.0697, Rw = 0.0821.
(1) (C4H7N2)6V10O28.3H2O, Triclinic, space group P-1, a = 9.596(2) A,b = 11.487(3) A, c = 12.318(2) A, α= 93.77, β =102.73(2), γ=106.73(2) , Z = 1, R = 0.032, Rw = 0.029.
Comparing the Gaussian component bands of the electronic spectra, the sequences of the d orbitals were assigned as dx2-y2 >> dz2 > dxy > dyz > dxz for solid and solution cis-[Cu(dipica)2](ClO4)2; dx2-y2 >> dxy > dz2 ~ dyz > dxz for solid trans-fac-[Cu(pepica)2](ClO4)2; dx2-y2 >> dxy > dyz ~ dz2 > dxz for solution trans-fac-[Cu(pepica)2](ClO4)2; dx2-y2 >> dz2 > dxy > dyz ~ dxz for solution [Cu(pepica)(bipy)](ClO4)2, [Cu(pepica)(phen)](ClO4)2, [Cu(pepica)(neoc)](ClO4)2, [Cu(dipica)(neoc)](ClO4)2.(H2O), [Cu(dipica)(en)](ClO4)2 and [Cu(pepica)(pico)](ClO4)2.(H2O); dx2-y2 >> dz2 > dxy> dyz > dxz for solution [Cu(dipica)(bipy)](ClO4)2, and [Cu(dipica)(phen)](ClO4)2; dx2-y2 >> dxy > dyz > dxz > dz2 for solution [Cu(dipica)(L)](ClO4)2 and [Cu(pepica)(L)](ClO4)2.
參考資料
1 Banerjea, D. " Coordination Chemistry ", Tata McGraw-Hill, New
Delhi, (1993). p406.
2 劉世鈞,國立臺灣師範大學化學研究所博士論文,1995年6月.
3 Hathaway, B. J.; Billing, D. E., Coord. Chem. Rev.,1970, 5, 4 (A) Larrabee, J. A; Spiro, T. G. J. Am. Chem. Soc. 1980, 102,
4217-4223.
(B) Penfield, K.W.; Gay, R. R.; Himmelwright, R. S.;Eickman,
N. C.; Norris, V. A.; Freeman, H. C.; Soloman, E. I., J. Am.
Chem. Soc., 1981, 103, 4382-4388.
5 Woolery, G. L.; Powers, L.; Winkler, M.; Soloman,E.I.;Spiro,
T. G.,J. Am. Chem. Soc. 1984, 106, 86-92.
6 Co. M. S.; Scott, R. A.; Hodgson, K. O., J. Am. Chem. Soc.
1981, 103, 986-988.
7 Brown, J. M.; Powers, L.; Kincaid, B.; Larrabee, J. A.;Spiro,
T. G., J.Am. Chem. Soc. 1981, 102, 1050-1057.
8 Hepp, A. F.; Hemmelwright, R. S.; Eickman, N. C.; Sloman, E.
I., Biochem. Biophys. Rev. Comm. 1979, 1050-1057.
9 Sorrell, T. N. ; Garrity, M. L., Inorg. Chem. 1991, 30, 210.
10 Cotton, F. A.; Wilkinson, G., "Advanced Inorganic Cemistry ",
5th ed. John Wiley & Sons, Singapore(1988). pp. 1363.
11 Su, C. C.; Hwang, T. T.; Wang, Y. P., Transition Met.Chem.,
1992,13, 2522.
12 Hodgson, J. B.; Percy, G. C.; Thornton, D. A., J. MoStruct.,
1980,66, 81.
13 Spiro, T. G.; Wollery, G. C.; Brown, T. M.; Power, L,;
Winkler, M. E.;Soloman, E. I., " Copper Coordination
Chemistry : Biochemistry &Iorganic Perspective ", Karlin, K.
D.; Zubieta, J.(eds)., Adenine,Guilderand, NY, (1983), PP. 1-
21.
14 Hathaway, B. J.; G. Wilkinson; R. D. Gillard and J.
McCleverty(eds)," Comprehensive Coordination Chemistry ",
Vol.5, Pergomon,Oxford(1897). pp. 594-774.
15 Romary, J. K.; Barger, J. D. and Bunds, J. E., Inorg. Chem.
1968, , 6,1142.
16 Romary, J. K.; Zachariasen, R. D.; Barger, J. D. and
Schiesser, H., J.Chem. Soc. (C), 1968, 2884.
17 胡聰成,國立臺灣師範大學化學研究所博士論文,1995年6月,
1.
18 Belford, R. L.; Clvin, M. and Belford, G. , J. Chem. Phys.
1957, 26,1165.
19 Stephens, F., J. Chem. Soc. (A) , 1969, 883.
20 Hodgson, P. G.; Penfield, B. R., J. Chem. Soc., Dalton
Trans. 1974,1870.
21 Duggan, M.; Hathaway, B. J. and J. Mullane, J. Chem. Soc.,
DaltonTrans. 1980, 690.
22 Butcher, R. J.; Addition, A. W., Inorg. Chim. Acta 1989,
158, 211.
23 Glerup, J.; Goodson, P. A.; Hodgson, D. J. ; Michelson, K.;
Wichelson, K.; Nielsen, K. M.; Weihe, H., Inorg. Chem. 1992,
31,4611.
24 M. Palaniandavar, T. Pandiyan, M. Lakshminarayanan and H.
Manohar, J. Chem. Soc., Dalton Trans., 1995, 455.
25 Henrick, K.; Mcpartlin, M.; Munjoma, S.; Oweston, P. G.;
Peters, R.;Sangokoya, S. A. and Tasker, P. A., J. Chem.
Soc., Dalton Trans.,1982, 225.
26 Biagin S. and Cannas M. J. Chem. Soc.(A) , 1970, 2398.
27 Sanni, S. B.; Beursken, P. T.; Albada, G. V.; Reedijk, J.,
J. Chem.Soc., Dalton Trans., 1988, 1429.
28 Palaniandavar, M.; Butcher, R. J. and Addition, A. W.,
Inorg. Chem.1996, 35, 467.
29 Hathaway, B. J. ; Underhill, A. E., J. Chem. Soc., 1961,3091-
3096.
30 蔡惠蓮,國立臺灣師範大學化學研究所碩士論文,1988年6月,p34.
31 李承柏,國立臺灣師範大學化學研究所碩士論文,1994年6月,p52.
32 Liu S.-J.; Su C.-C., Polyhedron, 1996, 15, 1141.
33 Wu C.-Y.; Su C.-C., Polyhedron, 1996, 16, 2465.
34 Hathaway B. J., " Essays in Chemistry " eds. Bradley J. N.
and R.Gillard D., Academic Press, New York, (1971). pp. 6192.
35 Hathaway B. J.; Bew M. J.; Billing, D. E.; Dudley R. J.;
Nicholls P.,J. Chem. Soc. A, 1969, 2312.
36 Su C.-C., Lin Y.-L, Liu S.-J, Chang T.-H., Wang S.-L., and
Liao F.-L.,Polyhedron, 1993, 12, 2687.
37 Huang, G.-S., Lai, J.-K., Ueng, C.-H. and Su, C.-C., to be
published.
38 Druhan, G.; Hathaway B. J., Acta. Cryst., 1979, B 35, 344.
39 Stephens, F. S., J. Chem. Soc.(A), 1969, 833.
40 Ray, N.; Hulett, L.; Sheahan, R.; Hathaway B. J., Inorg.
Nucl.Chem. Lett., 1978, 14, 305; J. Chem. Soc., Dalton
Trans., 1981, 1463.
41 邱馨儀,國立臺灣師範大學化學研究所碩士論文,1994年6月,p41.
42 Bew, M. J.; Hathaway B. J.; Fereday, R. J., J. Chem. Soc.,
Dalton Trans., 1972, 1229.
43 Su, C.-C., Wu, S.-P., Wu, C.-Y., ; Chang, T.-Y., Polyhedron,
1995,14, 267.
44 Hathaway, B. J.; Tomlinson, A. A. G., Coord. Chem. Rev.,
1970, 5,1.
45 Tomlinson, A. A. G.; Hathaway, B. J., J. Chem. Soc.(A),
1968, 1685.
46 Atanasov, M. A.; Hitchman, M. A., Inorg. Chem., 1993, 32,
3973.
47 Su, C. C. and Li, C. B. Polyhedron, 1994, 13, 825-833.
48 Su, C. C. and Wu, C. Y. J. Coord. Chem., 1994, 33, 1-14.
49 Wu, C. Y. and Su, C. C. Polyhedron, 1997, 16, 383-392.
50 Wu, C. Y. and Su, C. C. Polyhedron, 1997, 16, 2465-2474.
51 Solomon, E. I., Pure and Appl. Chem., 1983, 55, 1069.
52 Cotton, F. A. and Wilkinson, G. " Advanced Inorganic
Chemistry ", Fifth Edition, John Wiley Sons, New York
(1988), p769-770.
53 Houghton, R. P.; Putter, R. R. Chem. Commu. 1970, 1270.
54 Mary, J. Y., Daphne, W., Rosemary, C. H., and Jik, C., J.
Am. Chem.Soc. 1995, 117, 9441-9447.
55 Hodgson, D. J., Hale, P. K.; Hatfield, W. C., Inorg. Chem.,
1971, 10,1061.
56 Sager, R. S., Williams, R. J.; Watson, W. H., Inorg. Chem.,
1969, 8,694.
57 Bauer, R. A., Meek, D. W.; Ibers, J. A., Inorg. Chem., 1968,
7,1111.
58 Nakamoto, K " Infrared Spectra of Inorganic and Coordination
Compounds ", 1970, 217.
59 Bayner, G, W. and Lever, A. B. P., Can. J. Chem.,1972, 50,
3866.
60 Robin, J. H.; Charles, S. W., Inorg. Chem., 1965, 4, 350.
61 Biagini, M.; Cannas, M. J. Chem. Soc.(A), 1970, 2398.
62 Nelson, S. M.; Rodger,. J. Chem Soc.(A), 1968, 272.
63 Clark, J. H.; Williams, S. S., Inorg. Chem., 1965, 4, 350.
64 Burgess, J., Spectrochimica Acta, 1968, 24A, 1645.
65 Vulectic, N.; Djordjevic, C., J. Chem. Soc., Dalton Trans.,
1973,1137-1141.
66 Sergienko, V. S.; Borzunov, V. K.; Porai-Koshits,
M.A.;Loginov, S.V.; Zh. Nerog. Khim. 1988, 33,1609-1610.
67 Brand, S. G.; Edelstein, N.; Hawkins, C. J.; Shalimoff, G.;
Snow, M.R.; Tiekink, E. R. T., Inorg. Chem.,1990, 29, 434.
68 Arrieta, J. M. Polyhedron, 1992, 11, 3045-3067.
69 Su, C. C.; Huang, G. S.; Liu, S. J.; Wang, S. L.; Liao, F.
L., J. Chin.Chem. Soc. 1998, 45, 67-70.
70 Nugent, W. A. " Metal-Ligand Multiples Bond ", John Wiley
Sons, New York, (1988). 160-162.
71 Su, C. C. and Wu, C. Y., Chemistry(THE CHINESE CHEM. SOC.,
TAIPEI) June, 1996, Vol. 54, NO. 2, 57-68.
72 Kitajima, N.; Fujisawa K.; Fujimoto, C.; Moro-oka, Y.;
Hashimoto, S.; Kitagaw, T.; Toriumi, K.; Tatsumi, K. and
Nakamura, A., J. Am.Chem. Soc. 1992, 114, 1277-1291.
73 Sanyal, I.; Mahroof-Tahir, M.; Nasir, S.; Ghosh, P.; Cohen,
B. I.; Gultneh, Y.; Cruse, R. W.; Faroog, A.; Karlin, K. D.;
Liu, S. andZubieta, J., Inorg. Chem. 1992, 31, 4322-4332.