Molybdenum tricarbonyl complex functionalised with a molecular triazatriangulene platform on Au(111): surface spectroscopic characterisation

2021 ◽  
Author(s):  
Finn Petersen ◽  
Irene Lautenschläger ◽  
Alexander Schlimm ◽  
Benedikt M. Flöser ◽  
Hanne Jacob ◽  
...  
Keyword(s):  
Tricarbonyl Complex ◽  
Spectroscopic Characterisation

A Mo(0) tricarbonyl unit supported by a tripod ligand was bound to a triazatriangulene platform, and the resulting complex was deposited on a Au(111) surface. The corresponding monolayer was characterized with STM, XPS, NEXAFS and IRRAS.

Spectroscopic characterisation of crusts interstratified with prehistoric paintings preserved in open-air rock art shelters

2014 ◽  
Vol 45 (11-12) ◽  
pp. 1236-1243 ◽  
Author(s):  
Antonio Hernanz ◽  
Juan F. Ruiz-López ◽  
Juan Manuel Madariaga ◽  
Egor Gavrilenko ◽  
Maite Maguregui ◽  
...  
Keyword(s):  
Rock Art ◽  
Spectroscopic Characterisation

Synthesis and spectroscopic characterisation of MoO3thin films

1996 ◽  
Vol 6 (8) ◽  
pp. 1335-1338 ◽  
Author(s):  
Antonino Gulino ◽  
Guglielmo G. Condorelli ◽  
Ignazio Fragalà
Keyword(s):  
Spectroscopic Characterisation

Absorption and emission spectroscopic characterisation of 8-amino-riboflavin

2009 ◽  
Vol 364 (1-3) ◽  
pp. 19-30 ◽  
Author(s):  
A. Tyagi ◽  
P. Zirak ◽  
A. Penzkofer ◽  
T. Mathes ◽  
P. Hegemann ◽  
...  
Keyword(s):  
Absorption And Emission ◽  
Spectroscopic Characterisation

scholarly journals Synthesis, Characterization, and Biological Studies of a Piperidinyl Appended Dipicolylamine Ligand and Its Rhenium Tricarbonyl Complex as Potential Therapeutic Agents for Human Breast Cancer

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Amali Subasinghe ◽  
Inoka C. Perera ◽  
Svetlana Pakhomova ◽  
Theshini Perera
Keyword(s):  
Breast Cancer ◽  
Anticancer Agents ◽  
Human Breast Cancer ◽  
Human Breast ◽  
Tricarbonyl Complex ◽  
Nmr Spectrum ◽  
H Nmr ◽  
Biological Studies ◽  
Visible Spectra ◽  
Uv Visible

A novel ligand bearing a central piperidinyl sulfonamide group, N(SO2pip)dpa, and its corresponding Re tricarbonyl complex, [Re(CO)3(N(SO2pip)dpa)]+, have been synthesized in good yield. The methylene CH2signal seen as a singlet (4.54 ppm) in a1H NMR spectrum of the ligand in DMSO-d6appears as two doublets (5.39, 5.01 ppm) in a spectrum of the [Re(CO)3(N(SO2pip)dpa)]+complex and confirms the presence of magnetically nonequivalent protons upon coordination to Re. Structural results revealed that the Re–N bond lengths fall within the normal range establishing coordination of ligand to metal. The presence of intraligandπ→π⁎andn→π⁎transitions is indicated by the absorption peaks around 200–250 nm in UV-visible spectra. Absorption peaks in UV-visible spectra around 300 nm for metal complexes were identified as MLCT transitions. The S–N stretch observed as a strong peak at 923 cm−1for N(SO2pip)dpa appeared at a shorter frequency, at 830 cm−1in an FTIR spectrum of the [Re(CO)3(N(SO2pip)dpa)]+. The intense fluorescence displayed by the N(SO2pip)dpa ligand has quenched upon coordination to Re. Relatively low IC50values given by human breast cancer cells, MCF-7, (N(SO2pip)dpa = 139 μM, [Re(CO)3(N(SO2pip)dpa)]+= 360 μM) indicate that N(SO2pip)dpa and [Re(CO)3(N(SO2pip)dpa)]+are promising novel compounds that can be further investigated on their usage as potential anticancer agents.

scholarly journals Design, synthesis and spectroscopic characterisation of a focused library based on the polyandrocarpamine natural product scaffold

2013 ◽  
Vol 51 (6) ◽  
pp. 358-363 ◽  
Author(s):  
Paul S. Baron ◽  
Juliette E. Neve ◽  
David Camp ◽  
Lekha Suraweera ◽  
Ann Lam ◽  
...  
Keyword(s):  
Natural Product ◽  
Design Synthesis ◽  
Spectroscopic Characterisation

Structural, energetic and spectroscopic characterisation of 5-fluorouracil anticarcinogenic drug isomers, tautomers and ions

2018 ◽  
Vol 117 (13) ◽  
pp. 1589-1603 ◽  
Author(s):  
H. Othmani ◽  
R. Ben Said ◽  
N. Terzi ◽  
N.-E. Jaidane ◽  
M. Mogren Al Mogren ◽  
...  
Keyword(s):  
Spectroscopic Characterisation
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