Hasil Pencarian  ::  Simpan CSV :: Kembali

Hasil Pencarian

Ditemukan 6 dokumen yang sesuai dengan query
cover
Qiu, Zaozao
Abstrak :
Zaozao Qiu shows in this thesis that transition metals can mediate or catalyze the cycloaddition or coupling reactions of carboryne with alkynes or alkenes to afford benzocarboranes, alkenylcarboranes or dihydrobenzocarboranes. These results represent powerful strategies to assemble useful complex molecules from very simple precursors in a single operation. Carboranes have many applications in medicine. However, their unique structures make derivatization difficult and the limited efficient synthetic methods to obtain functional carborane materials have restricted applications of carboranes within a narrow scope. This work breaks a new ground in metal-carboryne chemistry and will have a significant impact on synthetic, cluster and materials chemistry.
Berlin: Springer, 2012
e20405910
eBooks  Universitas Indonesia Library
cover
New York: Plenum Press, 1992
546.3 INO
Buku Teks  Universitas Indonesia Library
cover
Duca, Gheorghe
Abstrak :
The book about homogeneous catalysis with metal complexes deals with the description of the reductive-oxidative, metal complexes in a liquid phase (in polar solvents, mainly in water, and less in nonpolar solvents). The exceptional importance of the redox processes in chemical systems, in the reactions occuring in living organisms, the environmental processes, atmosphere, water, soil, and in industrial technologies (especially in food-processing industries) is discussed. The detailed practical aspects of the established regularities are explained for solving the specific practical tasks in various fields of industrial chemistry, biochemistry, medicine, analytical chemistry and ecological chemistry. The main scope of the book is the survey and systematization of the latest advances in homogeneous catalysis with metal complexes. It gives an overview of the research results and practical experience accumulated by the author during the last decade.
Berlin : [Springer, ], 2012
e20425192
eBooks  Universitas Indonesia Library
cover
Abstrak :
ioflokulan DYT merupakan flokulan polimer alami yang berasal dari salah satu tanaman tropis Indonesia yang mengandung beberapa gugus fungsi diantaranya –OH dan –NH2. Bioflokulan DYT diisolasi menggunakan metanol sebagai pelarut. Kristal DYT yang dihasilkan direaksikan dengan larutan ion logam Co2+ kemudian direkristalisasi. Karakterisasi terhadap kristal bioflokulan DYT dan kompleks Kobalt (II) bioflokulan DYT meliputi konduktivitas pada berbagai variasi konsentrasi untuk mengetahui nilai hantaran molar, analisis spektrofotometer UV-VIS dilakukan untuk mengetahui panjang gelombang maksimum serapan bioflokulan DYT dan kompleks Kobalt (II) bioflokulan DYT. Analisis termal gravimetri (Thermogravimetri Analysis, TGA) dilakukan untuk mengetahui pengaruh suhu terhadap kestabilan kristal bioflokulan DYT dan kompleks Kobalt(II) bioflokulan DYT. Hasil analisis konduktivitas menunjukkan adanya kenaikan nilai hantaran molar untuk konsentrasi rendah pada konsentrasi 250 ppm dan 500 ppm, dan terjadi penurunan nilai hantaran molar pada konsentrasi 750 ppm sampai 2000 ppm. Hasil analisis spektrofotometer UV-VIS panjang gelombang maksimum untuk bioflokulan DYT pada 284 nm sedangkan kompleks Kobalt (II) bioflokulan DYT adalah 506 nm. Analisis TGA, memperlihatkan adanya perbedaan suhu penguraian kedua Kristal. Dimana, bioflokulan DYT mengurai pada suhu 657,440C sedangkan kristal kompleks Kobalt (II) bioflokulan DYT pada suhu 619,410C. Berdasarkan analisis tersebut kristal bioflokulan DYT dapat berperan sebagai ligan untuk senyawa kompleks.
JSTK 2:1 (2013)
Artikel Jurnal  Universitas Indonesia Library
cover
Abstrak :
This book about electronic structures of oxo-metal ions, early days in kemisk laboratorium IV and later studies, transition metal corrole coordination chemistry. A review focusing on electronic structural studies, chemical sensing with semiconducting metal phthalocyanines, biological outer-sphere coordination, ligand field and molecular orbital theories of transition metal X-ray absorption edge transitions, and time-resolved X-ray diffraction : the dynamics of the chemical bond.
Heidelberg : Springer, 2012
e20406113
eBooks  Universitas Indonesia Library
cover
Abstrak :
This book about a chronicle about the development of electronic structure theories for transition metal complexes orbital models and electronic structure theory, sturmians and generalized sturmians in quantum theory, chemistry as a “manifestation of quantum phenomena” and the born–oppenheimer approximation?, from ligand field theory to molecular collision dynamics : a common thread of angular momentum, a modern first-principles view on ligand field theory through the eyes of correlated multireference wavefunctions, and the phase rule : beyond myopia to understanding.
Heidelberg : Springer, 2012
e20406114
eBooks  Universitas Indonesia Library