摘要:

J. CHEM. soc DALTON TRANS. 1988 2323Mono- and Bi-nuclear Four-membered Methanide Auracycles; Synthesis andReactivity. X - Ray Structure of cis- [Au (C, F5),( S PPh,O) (CH,PPh,Me)] *Rafael Uson, Antonio Laguna, Mariano Laguna, and Isabel LazaroDepartamento de 0 uimica lnorganica, lnstituto de Ciencia de Materiales de Aragon, Universidad deZaragoza - C. S. I. C. 50009, Zaragoza, SpainPeter G. Jones and Christa Fittschenlnstitut fur Anorganische Chemie der Universitat, Tammannstrasse 4, D -3400 Gottingen, F. R. G.The complexes [Au(C6F,),CI(SPh,PCH,PPh2CH,R)]CIO, (R = H or Ph) react with Na,CO, orNaH to give four-membered methanide auracycles [Au(C,F,),(SPh,PkH PPh,CH,R)]CIO, or[Au(C6F,),(SPh,PkPPh2CH2R)], respectively; these complexes can be interconverted by reaction withwith NaH or HCIO,.The neutral derivatives can be used to form homobinuclear complexes[ Au(C,F,),(SPh,PC(AuX)PPh,Me)] (X = C6F5 or CI) and [Au(C,F,),{SPh,Pk(AuPPh,) PPh,Me}] BF,and react with water to give [Au(C,F,),(SPPh,O) (CH,PPh,CH,R)]. The structure of[Au(C,F,),(SPPh,O) (CH,PPh,Me)] has been solved by X-ray crystallography.Sodium hydride deprotonates the following gold(1) or gold(rrr)complexes containing bis(dipheny1phosphino)methane (dppm)or its derivatives: [Au(C,F,),(P~,PCH,PP~~)]~~~~,,~PPh2CH,R)]CI0, (R = H,, Ph,, or C,F,,), [AU(C,F,),-PCH,PPh,CH,R)]CIO, (R = H,3 Ph, C6F5,, or C0,Me5)to give neutral methanide complexes. In these cases, only singledeprotonation is achieved (from the CH, group between thetwo P atoms).The precursor [Au(C,F,),Cl(Ph,PCH,PPh,-CH,CO,Me)]ClO, can be doubly depr~tonated,~ theadditional proton coming from the other CH, group, x tothe C0,Me substituent.In the present paper we report the deprotonation (single ordouble) of [Au(C,F,),CI(SPh,PCH2PPh2CH,R)]C104(R = H or Ph) with Na,CO, or NaH, which leads to theformation of four-membered methanide auracycles. These canbe used as C-donor ligands to afford homobinuclear goldcomplexes; they also react with water to form ylide complexesby ring opening. The structure of the ylide [Au(C,F,),(S-Ph,0)(CH2PPh2Me)] has been established by X-raydiffraction.[AU(C,F,),(SP~~PCH,PP~~S)]C~O~,~ [Au(C,F,) (Ph2PCH2-(Ph,PCH,PPh,CH,R)]Cl04 (R = H),3 [Au(C~F,)~CI(P~,-Results and DiscussionThe phosphonium phosphine sulphide perchlorates wereprepared from the salts [Ph,PCH,PPh,CH,R]X (R = H,X = 1;' R = Ph, X = Br') according to equation (1).By[Ph,PCH,PPh2CH2R]X + AgC10, - AgX +[ Ph2PCH2PPh2CH2R]CI04 5[SPh,PCH,PPh,CH,R]ClO, ( 1 )(1) R = H(2) R = Ph* cis-DiphenylthiophosphinatoC(methyldipheny1phosphonio)-methanide] bis( pen tafluorophenyl)gold(~~~).Suppkmentar?. dofa acailahle from Fachinformationszentrum EnergiePhysik Mathematik, D-7514 Eggenstein-Leopoldshafen 2, WestGermany, by quoting a full literature citation and the reference numberCSD 52905.treating the salt (1) or (2) with the dimer [(Au(p-Cl)(C,F,),),](2 : 1 ratio), the monomeric cationic gold(m) complexes (3) and(4) can be obtained [Scheme, (i)].Complexes (3) and (4) react at room temperature with themild deprotonating agent Na,CO, to give auracycles ( 5 ) and(6), as a result of deprotonation of the methylene group betweenthe P atoms and simultaneous elimination of the chlorideligand, thereby vacating a co-ordination site which is occupiedby the methanide C atom to form a four-membered auracycle[Scheme (ii)].If the stronger deprotonating agent NaH is used,the same methylene group is doubly deprotonated, both thechloride ligand and the perchlorate anion are eliminated as thesodium salts, and the neutral complexes (7) and (8) are formed[Scheme, (iii)].Addition of HCIO, to the methanide complex (7) or (8) (1 : 1ratio) gives the cationic ( 5 ) or (6) [Scheme, (iu)] whichregenerate the neutral (7) or (8) on reaction with NaH [ ( u ) ] .The white compounds (1)-(6) are air- and moisture-stable inthe solid state or in solution.The yellow (7) and (8) are stable inthe solid state but their solutions are very sensitive to moisture.In the presence of a trace of water the solutions become pale;H,O adds to the C-PPh, bond, leading to ring opening andformation of the monothiophosphinate(y1ide) derivative (9) orThe structure of (9) has been solved by X-ray diffraction.Single crystals were obtained by slow diffusion of n-hexane intoa diethyl ether solution of the complex. However, they were ofmoderate quality and the precision attained is correspondinglylow.The gold atom shows the expected square-planar geometry(Figure). The Au-C bond lengths are equal to within ca.1estimated standard deviation. The Au-S bond length[2.363(7) A] is the first reported for an Au"*-S-P group; it isvery similar to the 2.367(3), 2.377(3) 8, in an Ad'-S-P system.8In gold(m) dithiolate complexes the usual values are ca. 2.29-2.32 However, a detailed comparison is not possible becauseof the different groups trans to the S atoms. The P-0 and P-Sbonds may be regarded as double and single respectively l o[ 1.467( 18) and 2.026( 12) A].The excess of electron density on the methanide C atom incomplexes (7) and (8) leads to reaction with gold(1) complexes[Au(C,F,)(tht)], [AuCl(tht)] (tht = tetrahydrothiophene), or[(Au(PPh,)),O]BF,, to give binuclear complexes (11)-(13)[Scheme (uii), (uiii)] which were isolated as white stable solids.(10)2324F F5c6' 5C<Au\ /"PPh2 CHOPPhZCHzR IJ.CHEM. SOC. DALTON TRANS. 1988ClO,[ SPhzPCHzPPhzCH2R ICIO,R = H ( 1 ) or Ph ( 2 )i )[ Au ( C6F5 I2C I (S P h,P C H , P P h C H R 1 1 C I 0,R = H ( 3 ) or Ph (4)PPh2CHzRR = H ( 7 ) or Ph ( 8 )Phq5F C 6' ' C H, P P h2 C H RR = H (9) or Ph (10)( l i ) \r 1L -JR = H ( 5 ) or Ph (6)F5c6\F 5 6 C H A U \ C /MePh2P' ' AuX(13)Figure. The molecule of complex (9) in the crystal. Radii arbitrary, Hatoms omitted for clarityAcetone solutions of compounds (1)-(6) and (13) behave as1 : 1 electrolytes," whilst solutions of (7)-(12) are non-conducting. In chloroform solution (7)-(12) are monomeric(Table 1) in agreement with the proposed formula.Additional information comes from the i.r. spectra.Thev(Au-C1) vibrations appear at higher energy for complexes (3)and (4) (320 and 3 15 cm-') than in the spectrum of the chloride-bridged dimer [(AU(~-cl)(c6F,)2)2] '' (290 cm-'). Thisvibration is not present in the spectra of complexes ( 5 ) and (6),showing that the anion eliminated simultaneously with the firstdeprotonation is the co-ordinated chloride and not theperchlorate; moreover the absorptions due to the C104-anion appear at 1 lOOvs, br and 620m cm-'. They are alsopresent in the spectra of complexes (1)-(4), but not in those of(7) and (8), the double deprotonation of the methylene group[Scheme (iii) or (u)] requiring the elimination of two anionicgroups (chloride and perchlorate).The i.r.spectrum of complex (13) shows absorptions at 1 100and 1 060 cm-' due l 4 to BF4-.The v(P-S) vibration^^^'^^'^ of complexes (3) and (4)containing the unidentate ligands are shifted towards lowerenergies (Av ca. 35 cm-') with respect to the free ligands (1) and(2), but in the auracycles (5)-(8) and (11)-(13) the shift is lessmarked (Av ca. 15-25 cm-'). One absorption between 600 and520 cm-I due to v(Au-C) is expected for complexes (5)-(12), but only (5) (550), (6) (549, and (11) (565 cm-') show bandswhich can be assigned to this vibration. For the othercomplexes, this vibration would be masked by the strongerv(P-S).P \ c / pI H1PWe have often observed4.' that complexes containing themoieties (I) and (II), i.e. a three-co-ordinated methanide carbonatom, display a strong absorption between 1 100-1 200 cm-',which disappears upon protonation or co-ordination of the Catom to another metal centre.Thus, complexes (7) and (8)display a strong absorption at 1 150 and 1 135 cm-'respectively, which is not present in the spectra of complexes(5), (61, and P - ( W J. CHEM. SOC. DALTON TRANS. 1988 2325~ ~Table 1. Analytical data for the new compounds (X = C,F,)Analysis (%) 'Yield A AMCompound(1) [SPh,PCH,PPh,Me]CIO,(2) [SPh,PCH,PPh,CH,Ph]ClO,(3) [AuX2C1(SPh,PCH,PPh,Me)]C104(4) [A uX , CI(S Ph PCH , PPh, CH, Ph)]CIO,( 5 ) [AuX2(SPh,PCHPPh2Me)]C10,(6) [A u X , (S Ph , PCH PPh ,CH Ph)] C104(7) [AuX,(SPh,PCPPh,Me)]- -(8) [A uX , ( SPh , PC P P h,C H Ph)](9) [AuX,(SPPh,O)(CH,PPh,Me)](10) [AuX,(SPPh,0)(CH,PPh2CH,Ph)](11) [AuX, (SPh,Pk(AuX)PPh,Me}](12) [AuX,{SPh,PC(AuC1)PPh2Me)] I 1(13) [AuX, (SPh,PC(AuPPh,)PPh,Me}]BF,(%I c:80 58.4(58.8)75 63.0(63.3)88 41.1(41.6)70 45.4(45.05)79' 43.086' (43.0)65' 46.984' (46.5)87 47.8570 51.0565 47.45(46.65)62 50.55(50.1)91 39.9(39.95)81 38.25(38.25)55 44.45(44.65)(47.5)( 5 1 .O)H4.65(4.75)4.9(4.8)2.25(2.3)2.6(2.5)2.3(2.3)2.65(2.5)2.65(2.4)3.2(2.65)2.9(2.65)2.30(2.75)1.9(1.75)2.15(1.95)2.55(2.55)' Calculated values are given in parentheses.In acetone solutions. See text.Au17.616.35(1 6.8)18.7(18.55)16.9(1 7.3)20.6(20.5)18.45( I 9.0)20.8519.2(1 8.7)29.95(29.75)32.25(33.0)26.6(26.15)(1 7.95)(20.15)cm.2 mol-'11912613013411811112170.50.211100M.p. ("C)114242180(decornp.)175(decomp.)218(decornp.)197(decomp.)21719219823 1196(decornp.)191(decomp.)129M a924(960.5)1011(1 036.5)952(979)996(1055)1274(1 325)1 145(1 193)Table 2.N.m.r. data' and v(P-S) vibrations'H 3'P-{lHJP-CH2-P P-CH 2-P hCompound or P-CH-P ' J ( P-H) or P-Me J ( P-H) s-P c-P-c J ( P-P)4.41 (dd)4.29 (dd)5.50 (t)3.95 (dd)3.86 (dd)5.53 (t)2.77 (d)b2.78 (d)b12.6, 15.410.5, 14.515.515.03.9, 11.912.5, 15.614.614.92.70 (d)4.62 (d)2.54 (d)4.53 (d)2.18 (d)4.55 (dd)1.70 (d)3.19 (d)2.64 (d)4.53 (d)1.97 (d)2.04 (d)2.33 (d)13.714.413.714.112.86.9, 10.912.414.013.913.912.112.111.633.68 (d)33.53 (d)39.43 (d)40.13 (d)60.61 (d)57.72 (d)61.34 (d)60.80 (d)46.1 1 (s)66.35 (s)69.70 ( s )72.47 (d)45.93 (s)21.50 (d) 9.123.44 (d) 7.820.80 (d) 14.224.1 1 (d) 17.125.13 (d) 11.67.75 (d) 29.012.62 (d) 24.I28.51 (s)32.70 (s)15.62 (s, br)16.14 (s, br)28.80 (d) 12.138.12 (m)' 12.0' I n CDCI,, resonances in p.p.m. and J in Hz. Assignable to Au-CH,-P protons. ' Au-PPh, appears at 21.18 (s) p.p.m.C( P - S)/C l l - l6056105 705755855905825885755 80590582592Complexes (9) and (10) show absorptions at 1 165 and 1 170cm-' respectively, assignable to v(P=O). l 6Complexes (3)-(13) show absorptions at 1 150,970, and twomore (or one broad band at 800 cm-'), which are characteristicof cis-bis(pentafluoropheny1) derivatives.' Complex (1 1) alsoshows absorptions at 975 and 765 cm-' from the additionalAu-C,F, group.Table 2 presents 'H and 31P-('H) n.m.r. data for thecomplexes.Signals from the phenylic protons (which appear asmultiplets between 7 and 8 p.p.m.) have been omitted. The 'Hn.m.r. signals of the P-CH, or P-CH2Ph groups appear atsimilar 6 values for all complexes except the doublydeprotonated (7) and (S), where they are shifted to higher field.The behaviour of the signals from the groups P-CH,-P andP-CH-P is consistent (Table 2, column 1) with the proposedformula.The 31P-(1H) n.m.r.spectra show, except for complexes (9)and (lo), two doublets corresponding to two mutually coupledP nuclei. The SP resonances change upon co-ordination of thefree ligands, and especially so when the P atom is part of a four-membered auracycle.2*'7 The coupling constants 'J(P-P) showmarkedly higher values for the doubly deprotonated complexes(7) and (8).Finally, complexes (9) and (10) show singlets for each P atom;the binuclear derivatives (11) and (12) C2J(P-P) cu. 01 show abroadening of the signal from the quaternary P atom, possiblydue to some coupling with 19F of the C,F, group trans to themethanide C atom. Complex (13) has *J(P-P) 12.0, 2326 J. CHEM. SOC. DALTON TRANS. 1988Table 3. Atomic co-ordinates ( x lo4) for complex (9)Atom Y Y3 555(1)2 899(8)672(8)3 418(9)2 586(22)4 657(21)6 132(39)6 892(41)6 070(46)4 628(42)3 897(38)4 094(28)5 108(33)5 552(33j4 853(36)3 851(40)3 410(37)58(20)- 594- 1434-1 621- 970- 130- 256( 18)- 2705 2013241 084.0(5)1 llO(4)1 818(4)1 889(4)1 857(11)333(12)261( 15)- 229( 15)- 673( 18)- 605( 17)- 146(14)1 OlO(13)1 359( 13)1316(12)946( 15)548( 17)588( 15)2 822(9)3 3513 5633 2472 7192 5061089(8)898118716671 934.1(6)3 063(4)1 144(4)1 625(13)2 233( 13)2 263( 16)2 426( 16)2 541(19)2 536( 18)2 342( 15)950(13)762( 16)107( 17)3 443(4)- 358( 19)- 203(21 j489( 18)1717(8)17071078459469109719(10j- 666- 1 106- 861Table 4.Selected bond lengths (A) and angles (”) for complex (9)Au-S 2.363(7) Au-C( 1) 2.086(23)Au-C(2) 2.084(27) Au-C( 8) 2.056(26)s-P(2) 2.026( 12) P( 1 )-C( 1 ) 1.802(21)P( 1 )-C( 14) 1.796(22) P(1)-C(20) 1.779(21)P(l)-C(38) 1.768(25) P(2)-C(26) 1.785(22)P(2)-C(32) 1.806(24) P( 2)-0 1.467( 18)C( l)-Au-SC( 2)-Au-C( 1 )C(8)-Au-C( 1 jP( 2)-S-AuC(20)-P( 1)-C( 1)C(32)-P(2)-S0-P( 2)-sC(38)-P( 1)-C( 1)C(38)-P( 1)-C( 20)O-P(2)-C( 32)94.2(7)176.2( 10)88.6( 10)105.9(4)112.5(10)110.7(12)108.3(7)117.3(9)109.5(11)110.1(12)C(2)-Au-SC(8)-Au-SC(8)-Au-C(2)C( 14)-P( 1)-C( 1)C(20)-P( 1 j-C( 14)C(38)-P( 1)-C( 14)C(26)-P(2)-SC(32)-P(2)-C(26)0-P( 2)-C( 26)P( 1 j-C( l)-Au87.8( 8)176.5(9)89.6( 10)1 0 8 3 11)108.0(9)106.7( 12)103.4(7)106.1(9)1 1 1.6( 1 1)1 14.2( 13)quaternary P signal similar to that of (11) and (12), and anadditional singlet from the P atom of the Au-PPh, group.ExperimentalInstrumentation and general experimental techniques were asdescribed earlier., The yields, melting points, C, H, and Auanalyses, conductivities, and molecular weights of thecomplexes are listed in Table 1.Proton and 31 P-(’ H} n.m.r. andv(P-S) data are listed in Table 2. All the reactions were run atroom temperature. The salts [Ph,PCH,PPh,Me]I,6[Ph,PCH,PPh,CH,Ph]Br,’ and [Ph,PCH,PPh,Me]ClO,’were prepared as described earlier; [Ph,PCH,PPh,CH,Ph)-C104 was prepared similarly.[SPh,PCH,PPh,CH,R]ClO, [R = H (1) or Ph (2)].-To asuspension of [Ph,PCH,PPh,Me]ClO, (0.499 g, 1 mmol) or[Ph,PCH,PPh,CH,Ph]CIO, (0.576 g, 1 mmol) in toluene (301513395494 611(18)4 5603 36022112 2623 4625 767(24)7 2608 3127 8716 3785 3266 958( 17)8 442(24)6 849(29) -3 913(26) -2 434(22)5 833(15)6 534(19)5 192(24)3 164(22)2 455(20)2 421(21)- 4 16(30)Y1859I5702 055(8)2 023175415181 54918182 590(8)2 7032 2711 72616122 044711(8)1 191(9)1089(9)1 742(7)1667(9)893( 1 1)157(8)226(7)1 399(11)2 345(8)- 243(9)- 133(7)Z- 1762644 870( 11)5 5885 8055 3044 5864 3693 245(10)3 2083 2813 3913 4293 3562 113(9)2 433( 1 1)2 678(11)2 654( 10)1 191(9)2 335(9)- 1 022(10)- 82(9)- 624( 10)637(9)1 608( 15)3 134(10)cm3) was added S, (0.08 g, 0.313 mmol), and the mixture wasstirred for 6 h at reflux temperature. The resulting white solidwas filtered off, washed with CS, (3 x 3 cm3), and recrystallizedfrom dichloromethanediethyl ether.[Au(C~F~),C~(SP~~PCH,PP~,CH,R)]C~O~ [R = H (3) UYPh (4)].-To a suspension of [fAu(p-Cl)(C,F,),),] (0.227 g,0.2 mmol) in CH,Cl, (20 cm’) was added salt (1) (0.213 g, 0.4mmol) or (2) (0.243 g, 0.4 mmol).After stirring for 3 h, a slightturbidity was removed by filtration through a layer ofKieselguhr (1 cmj. Concentration to ca. 5 cm3 and addition ofEt,O led to the precipitation of complexes (3) and (4), as whitesolids.[Au(C6F5)2(SPh,PCHPPh,CH,R)]C104 [R = H (5) or Ph(6)].-These complexes can be obtained in two different ways.(a) To a solution of complex (3) (0.219 g, 0.2 mmol) or (4)(0.235 g, 0.2 mmol) in dichloromethane (20 cm3) was addedNa,CO, (0.3 g, 2.8 mmolj, and the mixture was stirred for 3 h.The excess of Na,CO, and the precipitated NaCl were filteredoff and the solution was evaporated to 2 cm3; addition of Et,Ogave (5) or (6).(6) To a yellow solution of complex (7) (see below) (0.096 g,0.1 mmol) or (8) (see below) (0.104 g, 0.1 mmol) was addedHClO, (0.011 cm3 of a 9 mol dm-, solution, 0.1 mmol).Thesolution immediately turned white, and the white solid (5) or (6)was filtered off.[AU(C~F~),(SP~~PCPP~,CH,R)] [R = H (7) or Ph @)I.-These complexes can be obtained in two different ways.(a) To a diethyl ether (20 cm3) suspension of NaH (0.3 g, 12.5mmol) was added 0.2 mmol of complex (3) (0.219 gj or (4) (0.235gj, and the mixture was stirred for 2 h.The excess of NaH andthe precipitated NaClO, and NaCl were filtered off under N,and the solution was evaporated to ca. 2 cm3; addition of n-hexane (10 cm3) gave (7) or (8) as yellow solidsJ. CHEM. SOC. DALTON TRANS. 1988 2327( h ) Starting from complex (5) (0.106 g, 0.1 mmol) or (6) (0.1 14g, 0.1 mmol) and working as described above with NaH (0.3 g,12.5 mmol), complex (7) or (8) was obtained.[Au(C,F~)~(SPP~,O)(CH~PP~,CH,R)] [R = H (9) 01' Ph(lo)].-To a yellow solution of complex (7) (0.096 g, 0.1 mmol)or (8) (0.104 g, 0.1 mmol) in Et,O (15 cm3) was added one dropof water. The solution turned white in 1 h.Evaporation to ca. 5cm3 and addition of hexane (20 cm3) led to complex (9) or (10)as white solids.[Au(C,F5), [SPh,PC(AuX)PPh,Me)] [X = C,F, (11) orC1 (12)].- To a solution of complex (7) (0.096 g, 0.1 mmol) indiethyl ether (20 cm3) was added [Au(C,F,)(tht)] l 8 (0.045 g,0.1 mmol) or [AuCl(tht)] l 5 (0.032 g, 0.1 mmol). After stirringfor 2 h, the solution was evaporated to ca. 5 cm3 and addition ofhexane (20 cm3) gave (11) or (12) as white solids.[A,( C,F,)2 [ SPh,PC(AuPPh,)PPh, MeflBF, (13).-To asolution of complex (7) (0.096 g, 0.1 mmol) in dichloromethane(20 cm3) was added [{Au(PPh,)},O]BF, l 9 (0.148 g, 0.1 mmol).After stirring for 3 h the solution was evaporated to ca. 5 cm3;addition of EtzO (20 cm3) gave a brown solid that was filteredoff. Concentration to ca.3 cm3 and addition of hexane (15 cm3)gave (13) as ii white solid.X- Ruj- Structuw Determination of Comp1e.u (9).--Cr~:rtaldata. C,,H,,AuF,,OP,S, M = 978.55, monoclinic, a =9.055(4), h = 23.956(7), c = 19.264(7) A, p = 101.22(3)",U = 4 099 A" (by refinement of 28 values of 38 reflections in therange 19--23"), space group P2,/c, Z = 4, D, = 1.59 g cn1r3,F(OO0) = 1 904, colourless prism 0.3 x 0.1 x 0.1 mm,~ ( M o - K , ) = 3.7 mm-I.Datu cdh~~tron and processing. Stoe-Siemens four-circlediffractometer, monochromated Mo-K, radiation (h = 0.7 10 69A). 6 442 Profile-fitted intensities 2o to 26,,,. 45", 5 339 unique(R,,, 0.044), 2 389 with F > 4a(F) used for all calculations(modified SHELX system). Absorption correction based on wscans (transmissions 0.58-0.64).Three check reflections, ca. 4%decay, appropriate scaling.St r uc t uw mulysis and re) nemen t. Heavy -at om met hod.Refinement on F to R 0.089, R' 0.072 with Au, S, P, 0, and Fanisotropic. C and H isotropic. Phenyl (but not C,F,) groupsidealized to C-C 1.395, C-0 0.96 A. Other H included using ariding model. 250 Parameters, weighting scheme M-' = 0 2 ( F ) +0.0006 F'. maximum shift/e.s.d. 0.08, maximum residualelectron density 1 e k3.Final atomic parameters are given in Table 3, selected bondlengths and angles in Table 4.Additional material available from the Cambridge Crystal-lographic Data Centre comprises H-atom co-ordinates, thermalparameters, and remaining bond lengths and angles.AcknowledgementsWe thank the Diputacion General de Aragon for the award ofa Fellowship (to I.L.) and the CAICYT (Spain) and the Fondsder Chemischen Industrie (Frankfurt, West Germany) forfinancial support.References1 R. Uson, A. Laguna, M. Laguna, B. R. Manzano, P. G. Jones, andG. M. Sheldrick, J. Chem. Soc., Dalton Trans., 1984. 839.2 A. Laguna, M. Laguna, A. Rojo, and M. N. Fraile, J . Orgunomet.Chem., 1986, 315, 269.3 R. Uson, A. Laguna, M. Laguna, I. Lazaro, A. Morata, P. G.Jones, and G. M. Sheldrick, J. Chem. Soc., Dalton Trans., 1986,669.4 R. Uson, A. Laguna, M. Laguna, and I. LLizaro, J . Chrni. Soc., DultonTrans., 1988, 155.5 R. Uson. A. Laguna, M. Laguna, I. Lazaro, and P. G. Jones,Orguno~?ietullics, 1987, 6, 2326.6 H. Schmidbaur and U. Deschler, Cheni. Bu., 1983, 116, 1386.7 H. Schmidbaur, U. Deschler, B. Zimmer-Gasser, P. Neugebauer, andH. Schubert, Chem. Ber., 1980,113,902; C . Escolani, J. V. Quagliano,and L. M. Vallarino, Inorg. Chini. Actu, 1969, 3, 421.8 L. C. Porter and J. P. Fackler, jun., Acta Crystdlogr.. Srct. c', 1987,43, 587.9 P. G. Jones, Gold Bull., 1983, 16, 114; 1986, 19, 46.10 A. F. Wells, 'Structural Inorganic Chemistry,' Clarendon Press,I 1 W. J. Geary, Coord. Cheni. Rep., 1971, 7. 81.12 R. Uson, A. Laguna, M. Laguna, and A. Abad, J . Org~itiomc~t. Cheni.,13 B. J. Hathaway and A. E. Underhill, J. Cliem. Suc., 1961, 3091.14 N. H. Greenwood, J. Cheni. Suc., 1959, 381 1.15 D. W. Meek and P. Nicpon, J . Am. Chem. Sot.., 1965, 87, 4951.16 H. Teichmann and G. Hilgetas, Angel$,. Chew., Inr. Ed. Engf.. 1967,6,1013.17 J. Browning, G. W. Bushnell, K. R. Dixon, and A. Pidcock. horg.Chem., 1983, 22, 2226.18 R. Uson, A. Laguna, and J. Vicente, J. Orgunomet. Chem., 1977, 131,471.19 N. A. Nesmeyanov, E. G. Perevalova, Yu. T. Struchkov, M. Yu.Antipin, K. I. Grandberg, and V. P. Dyadchenko, J . Orgmomrt.CIiem., 1980, 201, 343.Oxford, 1984.1983, 249, 437.20 W. Clegg, Acta Crystallogr., Srcf. A, 198 1, 37, 22.Receizjed 17th Notiember 1987; Puper 71203

ISSN:1477-9226    

DOI:10.1039/DT9880002323

出版商:RSC    

年代:1988

数据来源: RSC