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Öğe THE 1ST NEUTRAL, MONONUCLEAR 4F METAL THIOLATES AND NEW METHODS FOR CORRESPONDING ARYL OXIDES AND BIS(TRIMETHYLSILYL)AMIDES(Royal Soc Chemistry, 1992) CETINKAYA, B; HITCHCOCK, PB; LAPPERT, MF; SMITH, RGThe first neutral, mononuclear 4f metal thiolates, [Sm(SAr)3] 1 and [Yb(SAr)2(dme)2]2, have been prepared and X-ray characterised [< Sm-S > 2.645(9) angstrom, < Yb-S > 2.756(8) angstrom], 1 from [Sm(CHR'2)3] + 3ArSH and 2 from [Yb(NR'2)2(dme)2] [obtained from Yb + Sn(NR'2)2]; 1 was not readily accessible from ArSH and Yb in liquid NH3, although replacing ArSH by Ar'OH yielded [Yb(OAr')2(thf)3] [Ar = C6H2But3-2,4,6; Ar' = C6H2But2-2,6-Me-4; R' = SiMe3, dme = (MeOCH2)2, thf = OC4H8].Öğe CARBENE COMPLEXES .24. PREPARATION AND CHARACTERIZATION OF 2 ENETETRAMINE-DERIVED CARBENERHODIUM(I) CHLORIDE COMPLEXES RHCL(L(R))(3) AND [RHCL(COD)L(R)] (L(R)=CN(ME)C(CH)(4)CNME-O) AND THE PREPARATION AND X-RAY STRUCTURES OF THE ENETETRAMINE L(2)(R) AND ITS SALT [L(2)(R)][BF4](2) (VOL 481, PG 89, 1994)(Elsevier Science Sa, 1995) CETINKAYA, E; HITCHCOCK, PB; KUCUKBAY, H; LAPPERT, MF; ALJUAID, SThe enetetramine [o-C6H4{N(Me)}C-2](2) (abbreviated as L(2)(R)) (1) has been obtained either from N,N'-dimethyl-o-phenylenediamine and CH(OMe)(2)NMe(2) or from [o-C6H4{N(Me)}C-2]I and NaH. Treatment of 1 with Ag[BF4] yielded the salt [L(2)(R)][BF4](2) (2). Use of L(2)(R) and [{Rh(mu-Cl)(COD)}(2)] in appropriate stoichiometry gave the carbenerhodium(I) chlorides [RhCl(COD)L(R) and RhCl(L(R))(3); Rh-103 NMR chemical shifts for 3 and 4 have been recorded. Crystal structure determinations were carried out on compounds 1 and 2. The most notable features are the differences between 1 and 2 with respect to (i) the C-C bond length [1.344(4) Angstrom (1) and 1.462(13) Angstrom (2)], (ii) the adjacent endocyclic N-C bond length [1.428(8) Angstrom (1) and 1.331(4) Angstrom (2)], (iii) the torsion angle about the central C-C bond [21 degrees (1) and 72 degrees (2)] and (iv) the closer approach of the nitrogen environment to trigonal planar in 2 than in 1.Öğe CARBENE COMPLEXES .24. PREPARATION AND CHARACTERIZATION OF 2 ENETETRAMINE-DERIVED CARBENERHODIUM(I) CHLORIDE COMPLEXES RHCL(L(R))(3) AND [RHCL(COD)L(R)] (L(R)=DCN(ME)CU(CH)(4)CNME-O) AND THE PREPARATION AND X-RAY STRUCTURES OF THE ENETETRAMINE L(2)(R) AND ITS SALT [L(2)(R)][BF4](2)(Elsevier Science Sa Lausanne, 1994) CETINKAYA, E; HITCHCOCK, PB; KUCUKBAY, H; LAPPERT, MF; ALJUAID, SThe enetetramine [o-C6H4{N(Me)}C-2](2) (abbreviated as L(2)(R) (1) has been obtained either from N,N'-dimethyl-o-pbenylenediamine and CH(OMe)(2)NMe(2) or from [o-C6H4{N(Me)}C-2]I and NaH. Treatment of 1 with Ag[BF4] yielded the salt [L(2)(R)][BF4](2) (2). Use of L(2)(R) and [{Rh(mu-Cl)(COD)}(2)] in appropriate stoichiometry gave the carbenerhodium(I) chlorides [RhCl(COD)L(R)] and RhCl(L(R))(3); Rh-103 NMR chemical shifts for 3 and 4 have been recorded. Crystal structure determinations were carried out on compounds 1 and 2. The most notable features are the differences between 1 and 2 with respect to (i) the C-C bond length [1.344(4) Angstrom (1) and 1.462(13) Angstrom (2)], (ii) the adjacent endocyclic N-C bond length [1.428(8) Angstrom (1) and 1.331(4) Angstrom (2)], (iii) the torsion angle about the central C-C bond [21 degrees (1) and 72 degrees (2)] and (iv) the closer approach of the nitrogen environment to trigonal planar in 2 than in 1.
