Chemistry of group 5 metallaboranes with heterocyclic thiol ligands: A combined experimental and theoretical study

2021 ◽  
Author(s):  
Rini Prakash ◽  
Anagha Haridas ◽  
Kirubakaran Bakthavachalam ◽  
Thierry Roisnel ◽  
Jean-François Halet ◽  
...  
Keyword(s):  
General Formula ◽  
Theoretical Study ◽  
Thiol Ligands ◽  
Group 5

Thermolysis of [(Cp*Nb)2(B2H6)2], 1b, (Cp* = η5-C5Me5) with 2-mercaptobenzothiazole, C6H4NSCSH (MBT) and 2-mercaptobenzoxazole, C6H4NOCSH (MBO) yielded the hydrogen substituted compounds 2 and 3 of general formula [(Cp*Nb)2(B2H6)(B2H5L)] (2: L =...

scholarly journals Preparation, Investigation and Theoretical Study of α-chloroacetamide-N-(p-substituted) phenyl

2009 ◽  
Vol 1 (3) ◽  
pp. 576-582
Author(s):  
Hanan A Al-Hazam
Keyword(s):  
Correlation Analysis ◽  
General Formula ◽  
Theoretical Study ◽  
Empirical Methods ◽  
Amide Form ◽  
New Compounds ◽  
Semi Empirical

Six new compounds of α-chloroacetamide-N-(p-substituted) phenyl of general formula ClCH2CONHPhX; where X = H,  Me,  OMe,  Br,  Cl  and NO2 have been prepared and investigated spectroscopically and theoretically.  AM1 and PM3 semi empirical methods were confirmed that compounds existed as amide form. Keywords: IR; 13CNMR; α-chloroacetamide-(N-P-X) phenyl; Correlation analysis; AM1 semi-empirical calculation.© 2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v1i3.2301                 J. Sci. Res. 1 (3), 576-582 (2009)       

Theoretical study of activation of the C–H bond in C2H4 by the group 5 metal atoms (V, Nb, Ta) in the gas-phase

2011 ◽  
Vol 974 (1-3) ◽  
pp. 43-51 ◽  
Author(s):  
Cui-Lan Wang ◽  
Yong-Cheng Wang ◽  
Yan-Zi Jin ◽  
Da-Fang Ji ◽  
Mao-Ji La ◽  
...  
Keyword(s):  
Gas Phase ◽  
Theoretical Study ◽  
Metal Atoms ◽  
Group 5

Morphological Changes in the Rat Granulosa Cell Surface During Differentiation Induced by Estradiol and Gonadotropins

1977 ◽  
Vol 35 ◽  
pp. 484-485
Author(s):  
P. Bagavandoss ◽  
JoAnne S. Richards ◽  
A. Rees Midgley
Keyword(s):  
Cell Surface ◽  
Granulosa Cell ◽  
Morphological Changes ◽  
Follicular Development ◽  
Female Rats ◽  
Functional Changes ◽  
Group 4 ◽  
Group 3 ◽  
Group 5 ◽  
Group 2

During follicular development in the mammalian ovary, several functional changes occur in the granulosa cells in response to steroid hormones and gonadotropins (1,2). In particular, marked changes in the content of membrane-associated receptors for the gonadotropins have been observed (1).We report here scanning electron microscope observations of morphological changes that occur on the granulosa cell surface in response to the administration of estradiol, human follicle stimulating hormone (hFSH), and human chorionic gonadotropin (hCG).Immature female rats that were hypophysectcmized on day 24 of age were treated in the following manner. Group 1: control groups were injected once a day with 0.1 ml phosphate buffered saline (PBS) for 3 days; group 2: estradiol (1.5 mg/0.2 ml propylene glycol) once a day for 3 days; group 3: estradiol for 3 days followed by 2 days of hFSH (1 μg/0.1 ml) twice daily, group 4: same as in group 3; group 5: same as in group 3 with a final injection of hCG (5 IU/0.1 ml) on the fifth day.

Ultrastructural Immunocytochemistry of Five Rat Pituitary Adenomas

1980 ◽  
Vol 38 ◽  
pp. 724-725
Author(s):  
D. J. McComb ◽  
N. Ryan ◽  
E. Horvath ◽  
K. Kovacs ◽  
E. Nagy ◽  
...  
Keyword(s):  
Pituitary Adenomas ◽  
Pituitary Tumors ◽  
Electron Microscopic ◽  
Electron Microscopic Immunocytochemistry ◽  
Transmission Electron ◽  
Rat Pituitary ◽  
Radiation Induced ◽  
Group 5 ◽  
Group 2 ◽  
Microscopic Techniques

Conventional light and electron microscopic techniques failed to clarify the cellular composition and derivation of spontaneous and induced, intrasellar and transplanted pituitary adenomas in rats (1). In the present work, electron microscopic immunocytochemistry was applied to evaluate five adenohypo-physial tumors using a technique described by Moriarty and Garner (2). Spontaneously occurring pituitary adenomas (group 1) were harvested from aging female Long-Evans rats. R-Amsterdam rats were treated with 2 x 1.0 mg estrone acetate (HogivaI) s.c. weekly for 6 months. Pituitary adenomas in excess of 30 mg were removed from these animals to make up the tumors of group 2. Groups 3 and 4 consisted of estrogen-induced autonomous transplan¬ted pituitary tumors MtT.WlO and MtT.F4. Group 5 was a radiation-induced transplanted autonomous pituitary tumor MtT.W5. The tumors of groups 3,4 and 5 were allowed to proliferate in host rats 6-8 weeks prior to removal for processing. Tissue was processed for transmission electron microscopy (glutaraldehyde fixation, OsO4 postfixation and epoxy resin embedding), and electron microscopic immunocytochemistry (3% paraformaldehyde fixation and Araldite embedding).

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