CNDO calculation for metallocenes of elements of the 3d transition series

I. I. Grinval'd; N. N. Vyshinskii; G. M. Zhidomirov; I. A. Abronin; A. V. Zolotukhin

doi:10.1007/bf00746764

ChemInform Abstract: MOLECULAR-ORBITAL INTERPRETATION OF THE ELECTRONIC SPECTRA OF HEXAFLUORO- AND HEXA-AQUA-COMPLEXES OF THE FIRST TRANSITION SERIES

Chemischer Informationsdienst ◽

10.1002/chin.197628001 ◽

1976 ◽

Vol 7 (28) ◽

pp. no-no

Author(s):

DAVID R. ARMSTRONG ◽

ROBERT FORTUNE ◽

PETER G. PERKINS

Keyword(s):

Molecular Orbital ◽

Electronic Spectra ◽

Aqua Complexes ◽

Transition Series

Charge Transfer in Mono-hydroxo and Mono-fluoro Complexes of Tripositive Cations in the First Transition Series

Nature ◽

10.1038/216791a0 ◽

1967 ◽

Vol 216 (5117) ◽

pp. 791-793 ◽

Cited By ~ 5

Author(s):

D. R. ROSSEINSKY

Keyword(s):

Charge Transfer ◽

Transition Series

Resistivity of the 4d Transition Series Ru‐Rh‐Pd‐Ag Containing Fe

Journal of Applied Physics ◽

10.1063/1.2163587 ◽

1968 ◽

Vol 39 (2) ◽

pp. 699-701 ◽

Cited By ~ 12

Author(s):

M. P. Sarachik

Keyword(s):

Transition Series

Mapping the Moving Image: Gesture, Thought and Cinema circa 1900 by Pasi Väliaho. Amsterdam University Press, Amsterdam, NL, 2010. Film Culture in Transition series, 256 pp., illus. ISBN: 978-90-8964-141-0; ISBN: 978-90-8964-140-3

Leonardo ◽

10.1162/leon_r_00132 ◽

2011 ◽

Vol 44 (2) ◽

pp. 179-180

Author(s):

Jan Baetens

Keyword(s):

Film Culture ◽

Moving Image ◽

Transition Series

Ethnic face categorization by Russians and Tuvinians in discrimination tasks

Experimental Psychology (Russia) ◽

10.17759/exppsy.2019120410 ◽

2019 ◽

Vol 12 (4) ◽

pp. 120-141

Author(s):

V.N. Kharitonov ◽

I.A. Basyul ◽

K.I. Ananyeva ◽

N.O. Tovuu

Keyword(s):

Task Performance ◽

Ethnic Groups ◽

Communication Skills ◽

Dual Task ◽

Maximum Efficiency ◽

Small Scale ◽

Isolated Populations ◽

Face Categorization ◽

Transition Series ◽

Large Groups

The opposite tendencies towards blurring the boundaries of compact living of ethnic groups and of relocation of large groups of strangers into the territories of compact residence of local groups generate a number of specific phenomena connected with the inter-group perception. We conducted a comparative study of perception and communication of transition series of “ethnic faces” among two small-scale isolated populations and representatives of the corresponding ethnic groups in multi-ethnic cities. The participants were to solve two discrimination task, one individually, the AB=X task, the other one, the dual “same-different” task, in dyads. For all samples of subjects, of In the AB=X task, the maximum discrimination efficiency was recorded for the same no. 2—3 pair of transition images series This may indicate that all subjects relied on the morphological features stimulus faces than on anything else. Also a tendency is observed toward similarity in the dynamics of efficiency of task performance in different groups of subjects, with the exception of the sample of Russians from the metropolis. At the same time, in the dyadic experiment, subjects from megacities demonstrate different trends in terms of the maximum efficiency of task performance. The sample of Russian subjects from Moscow demonstrates a significantly smaller decrease in efficiency when approaching the edges of the transitional series of stimulus images in the AB=X task, but not in the dual task. This is probably due to different nature of the tasks, i.e. one may easily suppose a more developed ability to perceptually discriminate between ethnic faces resulting from their greater variety in the environment, as in Moscow megacity, whereas it does not seem reasonable to suppose difference in communication skills required to perform the dual task across the samples.

Medicinal Utility of Some Schiff Bases and their Complexes with First Transition Series Metals: A Review

Oriental Journal Of Chemistry ◽

10.13005/ojc/370506 ◽

2021 ◽

Vol 37 (5) ◽

pp. 1051-1061

Author(s):

Tahmeena Khan ◽

Saima Zehra ◽

Almas Alvi ◽

Umama Fatima ◽

Alfred J. Lawrence

Keyword(s):

Transition Metal ◽

Metal Complexes ◽

Transition Metal Complexes ◽

Present Review ◽

Potential Drug ◽

Drug Candidates ◽

Transition Series ◽

Low Toxicity ◽

Activity Enhancement

Schiff based ligands and their complexes have emerged as potential drug candidates. Owing to their excellent chelating tendency, they easily coordinate with transition metals which have vacant orbitals. Transition metal complexes have several advantages because of their better acceptability and low toxicity in biological systems. These metals also serve as micronutrients and as co-factors of various metallo-enzymes which justifies the need of their designing and synthesis. Many modifications have been suggested in the ligand moiety for the purpose of activity enhancement and some of them have been described in the present review. These modifications have enhanced better potency against a number of diseases and resulting in low toxicity and better solubility in vivo. The transition metal complexes with Schiff based complexes have exhibited an array of activities including anticancer, antioxidant and antimicrobial. Their analytical applications have also been reported. The present review summarizes some of the recent advances in the field of synthesis and designing of new Schiff based complexes particularly with first transition series metals and their medicinal applications.

Electronic Spectra of Titania-Supported First Transition Series Cations

Spectroscopy Letters ◽

10.1080/00387018708081543 ◽

1987 ◽

Vol 20 (3) ◽

pp. 201-211 ◽

Cited By ~ 7

Author(s):

M. del Arco ◽

M. J. Holgado ◽

C. Martin ◽

V. Rives

Keyword(s):

Electronic Spectra ◽

Transition Series

The infrared spectra of imidazole complexes of first transition series metal(ii) nitrates and perchlorates

Journal of Molecular Structure ◽

10.1016/0022-2860(80)80161-x ◽

1980 ◽

Vol 66 ◽

pp. 81-92 ◽

Cited By ~ 48

Author(s):

John B. Hodgson ◽

(the late)Gordon C. Percy ◽

David A. Thornton

Keyword(s):

Infrared Spectra ◽

Transition Series ◽

Imidazole Complexes

Octahedral complexes. Part 1.—Magnetic susceptibilities in the first transition series

Transactions of the Faraday Society ◽

10.1039/tf9585401109 ◽

1958 ◽

Vol 54 (0) ◽

pp. 1109-1116 ◽

Cited By ~ 51

Author(s):

J. S. Griffith

Keyword(s):

Magnetic Susceptibilities ◽

Transition Series

Electron ionization mass spectrometry of aryl- and fluoroalkyl-substituted palladium(II) β-diketonates and monothio-β-diketonates

Canadian Journal of Chemistry ◽

10.1139/v94-163 ◽

1994 ◽

Vol 72 (5) ◽

pp. 1302-1311 ◽

Cited By ~ 1

Author(s):

Mark L. J. Reimer ◽

John B. Westmore ◽

Manoranjan Das

Keyword(s):

Mass Spectra ◽

Electron Ionization ◽

Electron Ionization Mass Spectrometry ◽

Ionization Mass ◽

Aryl Group ◽

Mass Spectral ◽

Transition Series ◽

Electron Ionization Mass Spectra ◽

Positive Ion ◽

Sulfur Donor

Positive ion electron ionization mass spectra are presented for palladium(II) β-diketonates and monothio-β-diketonates of the general form PdII[RC(X)CHC(O)R′]2, where R = phenyl, 4-methoxyphenyl, 2-thienyl, or 2-naphthyl; R′ = trifluoromethyl, pentafluoroethyl, or n-heptafluoropropyl; and X = O or S. The mass spectral behavior is in sharp contrast to that of metals of the first transition series. The spectra of the β-diketonates are dominated by metal-containing ions that arise by migration of the R group from the ligand (L) to palladium, but there is no evidence for fluorine-to-metal transfer. These findings are consistent with HSAB theory. The strong tendency of palladium to form bonds with unsaturated carbon also leads to remarkably abundant metal-containing ions that arise by losses of CO or aryloxy radicals from [PdRL]+• ions. In contrast, in decompositions of ions in the spectra of the monothio-β-diketonates, migration of the R group is suppressed; competition for palladium dπ electrons by the sulfur donor makes palladium a poorer aryl group acceptor.