Observation and Characterization of CH3CH2–MH, (CH2)2–MH2, CH2═CH–MH3, and CH3–C≡MH3– Produced by Reactions of Group 5 Metal Atoms with Ethane

2017 ◽  
Vol 121 (36) ◽  
pp. 6766-6777 ◽  
Author(s):  
Han-Gook Cho ◽  
Lester Andrews
Keyword(s):  
Metal Atoms ◽  
Group 5

Synthesis and Characterization of New Zinc Phthalocyanine - Dodecenyl Succinic Anhydride Benzoic Groups

2020 ◽  
Vol 17 (6) ◽  
pp. 488-495
Author(s):  
Hussein Ali Al-Bahrani ◽  
Mohanad Mousa Kareem ◽  
Abdul Amir Kadhum ◽  
Nour A. Alrazzak
Keyword(s):  
Salicylic Acid ◽  
Succinic Anhydride ◽  
Zinc Phthalocyanine ◽  
Central Metal ◽  
Target Compound ◽  
Compound I ◽  
Metal Phthalocyanines ◽  
Metal Atoms ◽  
Amino Salicylic Acid

Background: The phthalocyanines a series of compounds involves four iso-indole units linked by aza nitrogen atoms bonded with metal atoms that are normally located in the center a phthalocyanines ring. Some of the central metal-phthalocyanines can be excited by ultraviolet light and emit a fluorescence in far-red region. Objective: To synthesize a derivative of phthalocyanines namely 4,4',4' '-tri-(dodecenyl succinic anhydride)- 4' ' '-(5-amino salicylic acid) zinc phthalocyanine with a zinc central metal. Materials and Methods: The reaction of 4- nitro Phthalonitrile and 4- amino Phthalonitrile with ZnCl2 in the presence of dimethyl amino ethanol afforded 4,4',4' '-triamino-4' ' '-nitro zinc phthalocyanine. This product reacted with 5-amino salicylic acid to yield tetra-(5-amino salicylic acid) zinc phthalocyanine. A dodecenyl succinic anhydride was added on the amine group of benzoic rings to afford 4,4',4' '-tri-(dodecenyl succinic anhydride)-4' ' '-(5-amino salicylic acid) zinc phthalocyanine(I), the target compound. Results and Discussion: Compound I is successfully synthesized with a yield of 72% from tetra-(5-amino salicylic acid) zinc phthalocyanine with dodecenyl succinic anhydride. Conclusion: The newly synthesized molecule of 4,4',4' '-tri-(dodecenyl succinic anhydride)-4' ' '-(5-amino salicylic acid) zinc phthalocyanine (I), tetra-(5-amino salicylic acid) zinc phthalocyanine(E) and 4,4',4' '- triamino-4' ' '-nitro zinc phthalocyanine (S). The reaction of 4- nitro Phthalonitrile and 4- amino and the structure of compound I is confirmed and its formation was proven.

scholarly journals Morphological Characterization of Isolates of Phomopsis vexans of Bangladesh

2013 ◽  
Vol 8 (1-2) ◽  
pp. 123-130
Author(s):  
MM Islam ◽  
M Asaduzzaman ◽  
ME Hoque ◽  
MB Meah
Keyword(s):  
Morphological Characterization ◽  
Cultural Properties ◽  
Group 3 ◽  
Group 5 ◽  
Group 2 ◽  
Phomopsis Vexans ◽  
Group 1

Forty four isolates of Phomopsis vexans from different eggplant cultivars collected from core eggplant growing regions of Bangladesh which were characterized using mycological characteristics. Variation exists among the isolates of Phomopsis vexans of Bangladesh covering two types of farm having two ecosystems and the isolates were grouped into five distinct groups based on their cultural properties. The highest sized ? conidia were observed in group -1 and the lowest size in-group -2. The highest sized ? conidia were recorded in group -5 and the lowest in-group –2. The highest pycnidial size noted in-group -3 and the smallest sized pycnidia were recorded in group –1. DOI: http://dx.doi.org/10.3329/jsf.v8i1-2.14635 J. Sci. Foundation, 8(1&2): 123-130, June-December 2010

scholarly journals Crystallographic and structural characterization of heterometallic platinum compounds Part VII. Heterohepta- and heterooctanuclear clusters

2014 ◽  
Vol 13 (1) ◽  
Author(s):  
Milan Melnik ◽  
Peter Mikuš ◽  
Clive E. Holloway
Keyword(s):  
Structural Characterization ◽  
Structural Parameters ◽  
Bond Distance ◽  
Point Of View ◽  
Platinum Compounds ◽  
Metal Atoms ◽  
Platinum Clusters ◽  
Structural Point

AbstractThis review classifies and analyzes over fifty heterohepta- and heterooctanuclear platinum clusters. There are eight types of metal combinations in heteroheptanuclear: Pt6M, Pt5M2, Pt4M3, Pt3M4, Pt2M5, PtM6, Pt3Hg2Ru2 and Pt2Os3Fe2. The seven metal atoms are in a wide variety of arrangements, with the most common being one in which the central M atom (mostly M(I)) is sandwiched by two M3 triangles. Another arrangement often found is an octahedron of M6 atoms asymmetrically capped by an M atom. The shortest Pt-M bond distances (non-transition and transition) are 2.326(1) Å (M = Ga) and 2.537(6) Å (M = Fe). The shortest Pt-Pt bond distance is 2.576(2) Å.In heterooctanuclear platinum clusters there are eight types of metal combinations: Pt6M2, Pt4M4, Pt3Ru5, Pt2M6, PtM7, Pt2W4Ni2, PtAu6Hg and PtAu5Hg2. From a structural point of view, the clusters are complex with bicapped octahedrons of eight metal atoms prevailing. The shortest Pt-M bond distances (non-transition and transition) are 2.651(3) Å (M = Hg) and 2.624(1) Å (M = Os). The shortest Pt-Pt bond distance is 2.622(1) Å. These values are somewhat longer than those in the heteroheptanuclear clusters. Several relationships between the structural parameters were found, and are discussed and compared with the smaller heterometallic platinum clusters

A Methyl Group Bridging on Three Metal Atoms. Solid-State and Solution Structural Characterization of the [Re3(μ-H)3(μ3-CH3)(CO)9]-Anion

1999 ◽  
Vol 121 (10) ◽  
pp. 2307-2308 ◽  
Author(s):  
T. Beringhelli ◽  
G. D'Alfonso ◽  
M. Panigati ◽  
F. Porta ◽  
P. Mercandelli ◽  
...  
Keyword(s):  
Solid State ◽  
Structural Characterization ◽  
Methyl Group ◽  
Metal Atoms

scholarly journals Characterization of inter-varietal chromosome substitution lines of wheat using molecular markers

2008 ◽  
Vol 44 (No. 1) ◽  
pp. 22-29 ◽  
Author(s):  
K. Pánková ◽  
Z. Milec ◽  
M. Leverington-Waite ◽  
S. Chebotar ◽  
J.W. Snape
Keyword(s):  
Molecular Markers ◽  
Flowering Time ◽  
Homoeologous Group ◽  
Chromosome Substitution ◽  
Substitution Lines ◽  
Chromosome Substitution Lines ◽  
Vrn Genes ◽  
Group 5 ◽  
Group 2

Several sets of wheat inter-varietal chromosome substitution lines (SLs) have been produced over the last fifty years at the CRI (formerly RICP) in Prague-Ruzyně, based on cytogenetic manipulations using aneuploids. Lines with defined genes have been obtained which significantly influence growth habit and flowering time and these have been used particularly in the study of the genetics and physiology of flowering. The sets of lines include substitutions of homoeologous group 5 chromosomes carrying Vrn genes that control vernalisation response, homoeologous group 2 chromosomes with Ppd genes controlling photoperiodic sensitivity, and some other substitutions, particularly those with chromosome 3B of the Czech alternative variety Česká Přesívka where a novel flowering time effect was located. Although the phenotypic and cytological analysis of substitution lines has been continually carried out during backcrossing generations, only the use of molecular markers can allow an unambiguous characterization to verify that substitutions are correct and complete. This analysis has allowed incorrect substitutions or partial substitutions to be identified and discarded. This paper summarizes the results of recent molecular checks of the substitution line collections at CRI.

Thermal and Photolytic Reactions of Group 12 Metal Atoms in HCl-Doped Argon Matrixes:  Formation and Characterization of the Hydride Species HMCl (M = Zn, Cd, or Hg)

2004 ◽  
Vol 108 (44) ◽  
pp. 9500-9509 ◽  
Author(s):  
Victoria A. Macrae ◽  
Jennifer C. Green ◽  
Tim M. Greene ◽  
Antony J. Downs
Keyword(s):  
Metal Atoms ◽  
Group 12

Synthesis and structural characterization of group 5 dimetallaheteroboranes

2013 ◽  
Vol 747 ◽  
pp. 249-253 ◽  
Author(s):  
Pritam Shankhari ◽  
Dipak Kumar Roy ◽  
K. Geetharani ◽  
R.S. Anju ◽  
Babu Varghese ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Group 5

scholarly journals Crystallographic and structural characterization of heterometallic platinum complexes Part V. Heteropentanuclear complexes

2014 ◽  
Vol 12 (3) ◽  
pp. 283-306 ◽  
Author(s):  
Milan Melník ◽  
Peter Mikuš ◽  
Clive Holloway
Keyword(s):  
Structural Characterization ◽  
Structural Parameters ◽  
Bond Distance ◽  
Platinum Complexes ◽  
Trigonal Bipyramidal ◽  
Metal Atoms ◽  
Independent Molecules

AbstractThis review classifies and analyzes over eighty heteropentanuclear Pt complexes. There are eight types of metal combinations: Pt4M, Pt3M2, Pt2M3, PtM4, Pt3MM′, Pt2M2M′, PtM2M′2 and PtM3M′. The five metal atoms are in a wide variety of arrangements: trigonal-bipyramidal (most common), square-pyramidal, spike-triangular, butterfly, cubane, linear and one unique. Platinum bonds to a variety of triad partner metal atoms, soft, through borderline to hard. The shortest Pt-M bond distances for non-transition and transition M are 2.406(4) Å (M = Ge) and 2.30(1) Å (M = Co). The shortest Pt-Pt bond distance is 2.580(1) Å. Several relationships between the structural parameters were found and are discussed. Several complexes exist in two isomeric forms and others contain two crystallographically independent molecules. Both the isomers as well as independent molecules are examples of distortion isomerism.

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