Evolution from discrete mononuclear complexes to trinuclear linear cluster and 2D coordination polymers of Mn(II) with dihydrazone Schiff bases: preparation, structure and thermal behavior

Polyhedron ◽  
2021 ◽  
pp. 115329
Author(s):  
Lilia Croitor ◽  
Maria Cocu ◽  
Ion Bulhac ◽  
Paulina N. Bourosh ◽  
Victor Ch. Kravtsov ◽  
...  
2007 ◽  
Vol 62 (6) ◽  
pp. 807-817 ◽  
Author(s):  
Mohammed Enamullah ◽  
A.K.M. Royhan Uddin ◽  
Anne-Christine Chamayou ◽  
Christoph Janiak

Condensation of salicylaldehyde with enantiopure (R)-(1-aryl-ethyl)amines yields the enantiopure Schiff bases (R)-N-(1-aryl-ethyl)salicylaldimine (HSB*; aryl = phenyl, 2-methoxyphenyl, 3- methoxyphenyl, 4-methoxyphenyl (4), 4-bromophenyl (5), 2-naphthyl). These Schiff bases readily react with dinuclear (acetato)(η4-cycloocta-1,5-diene)rhodium(I), [Rh(μ-O2CMe)(η4-cod)]2, to afford the mononuclear complexes, cyclooctadiene-((R)-N-(1-aryl-ethyl)salicylaldiminato-κ2N,O)- rhodium(I), [Rh(SB∗)(η4-cod)] (SB* = deprotonated chiral Schiff base = salicylaldiminate; aryl = phenyl (7), 2-methoxyphenyl, 4-methoxyphenyl, 4-bromophenyl, 2-naphthyl). The complexes have been characterized by IR, UV/vis, 1H/13C NMR and mass spectrometry, optical rotation as well as by single-crystal X-ray structure determination for 4, 5 and 7. The structure of 5 shows C-Br· · ·π contacts. Compound 7 is only the second example of a Rh(η4-cod) complex with a six-membered Rh-N,O-chelate ring


2018 ◽  
Vol 13 (8) ◽  
pp. 1012-1023 ◽  
Author(s):  
Bhyranalyar N. Veerabhadraswamy ◽  
Doddamane S. Shankar Rao ◽  
Channabasaveshwar V. Yelamaggad

2014 ◽  
Vol 55 (6) ◽  
pp. 1067-1074 ◽  
Author(s):  
S. I. Dorovskikh ◽  
N. V. Kuratieva ◽  
S. V. Tkachev ◽  
S. V. Trubin ◽  
P. A. Stabnikov ◽  
...  

2013 ◽  
Vol 197 ◽  
pp. 46-52 ◽  
Author(s):  
Abhinandan Rana ◽  
Swapan Kumar Jana ◽  
Madhusudan Bera ◽  
Debdoot Hazari ◽  
Durga Sankar Chowdhuri ◽  
...  

2017 ◽  
Vol 838 ◽  
pp. 24-36 ◽  
Author(s):  
Tushar S. Basu Baul ◽  
Pelesakuo Kehie ◽  
Andrew Duthie ◽  
Herbert Höpfl

Author(s):  
Bhavesh J. Gangani ◽  
Parsotam H. Parsania

Thermo gravimetric analyses of some symmetric double Schiff bases of 1, 1’- bis (4-amino phenyl) cyclohexane (SDSB-1 to SDSB-6) was carried out at 100C/min in nitrogen atmosphere. Schiff bases are thermally stable up to 200-285°C and followed two step degradation kinetic. Various kinetic parameters such as order of degradation (n), energy of activation (Ea), frequency factor (A) and entropy change (ΔS) were derived accordingly Anderson-Freeman method interpreted in light of nature of the substituents. The nature, size and position of substituents affected thermal properties of the Schiff bases.


2009 ◽  
Vol 635 (2) ◽  
pp. 393-398 ◽  
Author(s):  
Qing-Yang Lian ◽  
Chun-De Huang ◽  
Rong-Hua Zeng ◽  
Yong-Cai Qiu ◽  
Ji-Xia Mou ◽  
...  

2019 ◽  
Vol 7 (25) ◽  
pp. 7494-7511 ◽  
Author(s):  
Yasuchika Hasegawa ◽  
Yuichi Kitagawa

Historical and recent advances of lanthanide mononuclear complexes, polynuclear clusters, coordination polymers (CPs) and metal–organic frameworks (MOFs) with temperature-dependent luminescence are reviewed for future thermo-sensitive paints.


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