Download or read book Synthesis and Coordination Chemistry of 1 4 7 10 13 pentakis 2 hydroxyethyl 1 4 7 10 13 pentaazacyclopentadecane written by Kylie Michelle Walters and published by . This book was released on 2002 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Synthesis of 1 4 7 10 tetrakis R 2 hydroxy 3 4 benzyloxy 3 methoxyphenyl propyl 1 4 7 10 tetraazacyclododecane written by Edward Andrew Konieczny and published by . This book was released on 1999 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 2 3 4 7 Tetrahydro 1 i H i inden 2 ol Synthesis Molecular Structure and Coordination Chemistry written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis Structure Spectroscopy and Reactivity of Azapentadienyl ruthenium phosphine Complexes written by Meghan Stouffer and published by . This book was released on 2015 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation focuses on the systematic synthesis of bis-azapentadienyl-ruthenium-phosphine complexes. The synthetic approach involves the treatment of Cl2Ru(PPh3)3 with potassium tert-butylazapentadienide reagent. The reactivity of this parent compound with other 2e- donor ligands is investigated. These resultant complexes' reactivity with triflic acid is also studied. Treatment of Cl2Ru(PPh3)3 with potassium tert-butylazapentadienide produces [(1,2,3-[eta]3)-5-tert-butylazapentadienyl]2Ru(PPh3)2 (1). Compound 1 undergoes single substitution of one of the triphenylphosphines when treated with PMe3, dmpe, P(OMe)3, CNCMe3, CO, and PEt3 at room temperature, resulting in [(1,2,3-[eta]3)-5-tert-butylazapentadienyl]2Ru(PPh3)(L) (2, L = PMe3; 3, L= dmpe; 4, L = P(OMe)3; 5, L = CNCMe3; 6, L = CO; 7, L = PEt3). By increasing the reaction time of 1 with PEt3, double substitution of both triphenylphosphines occurs, resulting in [(1,2,3-[eta]3)-5-tert-butylazapentadienyl]2Ru(PEt3)2 (8). Compounds 1 - 8 possess a pseudo-octahedral geometry where both ancillary ligands sit trans to the C3's of the azapentadienyl ligands. Compounds 1 - 4, 7 and 8 exhibit a ligand orientation in which both ancillary ligands sit in the mouth of each azapentadienyl ligand, denoted as mC3/mC3. In contrast, 5 exhibits a ligand arrangement where the PPh3 sits in the mouth of one azapentadienyl ligand while CNCMe3 sits on the backbone of the other azapentadienyl ligand. Other double substitution reactions occur when 1 is treated with PMe3, P(OMe)3, and dmpe in THF at reflux, resulting in [(1,2,3-[eta]3)-5-tert-butylazapentadienyl]2Ru(L)x (9, L = PMe3, x = 2; 10, L = P(OMe3), x = 2; 11, L = dmpe, x = 1). Compounds 9 and 10 exist in solution as an equilibrium mixture of two structural isomers. The two isomers in solution have either a mC3/mC3 or mC3/bC1 ligand orientation. Treatment of 8, 9 and 10 with triflic acid results in dicationic products, {[(1,2,3-[eta]3)-(CH2CHCHCH=N(H)(CMe3)]2Ru(L)2}2+( -O3SCF3)2 (12, L = PEt3; 13, L = PMe3; 14, L = P(OMe)3), in which both azapentadienyl nitrogen atoms have been protonated. The protonated product, 12, shows a ligand conversion from mC3/mC3 (seen in 8) to mC3/bC3. Upon protonation, 9 and 10 each convert to a single isomer, 12 and 13, respectively. Like 12, compound 13 possesses a mC3/bC3 orientation while 14 has a ligand orientation in which the azapentadienyl ligands appear to be mC3/mC3. Treatment of 2, 4 and 5 with triflic acid results in multiple isomers of the diprotonated {[(1,2,3-[eta]3)-CH2CHCHCH=N(H)(CMe3)]2Ru(PPh3)(L)}2+( -O3SCF3)2 (15, L = PMe3; 16, L = P(OMe)3; 17, L = CNCMe3). All of the compounds have been characterized, in part, by NMR spectroscopy, and the structures of 2, 4, 5, 7, 8, and 12 have been confirmed by single-crystal X-ray diffraction.

Download or read book Synthesis and Some Chemistry of 4 methyl 4 phenyl and 4 7 dimethylpentacyclo 6 2 1 O2 7 O4 10 O5 9 Undeca 3 6 dione written by Harvey L. Kaufman and published by . This book was released on 1972 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: