@article {46956,
	title = {Tale of biphenyl and terphenyl substituents for structurally diverse ketiminato magnesium, calcium and germanium complexes},
	journal = {Chemistry-An Asian Journal},
	volume = {15},
	year = {2020},
	month = {MAR},
	pages = {820-827},
	type = {Article},
	abstract = {<p>In this paper, we have used two N,O-ketiminato ligands (L1 and L2) with biphenyl and terphenyl substituent on the nitrogen atom. Deprotonation of L1 with KN(SiMe3)(2) and subsequent reaction with MgI2 led to a homoleptic dinuclear magnesium complex (1) with a Mg2O2 four-membered ring. Deprotonation with nBuLi and subsequent reaction with MgI2 afforded a unusual dinuclear magnesium complex (2) with a Mg2O2 ring. Extension of the ligand for calcium resulted in a trinuclear calcium complex (3) with six four-membered Ca2O2 rings. We could not isolate any chelating complex when L2 was used as a ligand, and only oxygen bound magnesium (4) and calcium (5) adducts were isolated. DFT studies were performed to understand this dissimilar behavior. More diverse results were obtained when lithiated L1 and L2 were treated with germanium dichloride. We were able to stabilize a monomeric germylene monochloride (7) with L1. However, with L2, an unusual ligand scrambling, and a C-C coupling take place, leading to the formation of a secondary carbocation with GeCl3- as a counter-anion (8). Besides, a germanium dichloride adduct (9) bound to the oxygen center of the ligand was obtained as the minor product.</p>
},
	keywords = {calcium, Germylene, ligand, Magnesium, X-ray Structure},
	issn = {1861-4728},
	doi = {10.1002/asia.201901801, Early Access Date = FEB 2020},
	author = {Kumar, Rohit and Yadav, Sandeep and Gour, Kritika and Sangtani, Ekta and Ranjan Dash, Soumya and Raja, Abhishekram and Vanka, Kumar and Gonnade, Rajesh G. and Sen, Sakya S.}
}
@article {49616,
	title = {Germylene mediated reductive C-C and C-N coupling of an isocyanide and its device application},
	journal = {Angewandte Chemie-International Edition},
	volume = {64},
	year = {2025},
	month = {FEB },
	type = {Article},
	abstract = {<p>
	We have demonstrated a unique reductive coupling of 4-iodophenyl isocyanide, facilitated by a perimidine-based N-heterocyclic germylene (NHGe), which yields a bis-spirogerma compound featuring simultaneous C-C and C-N bond formation. This reaction, which leads to the oxidation of germanium from +2 to +4, represents a significant departure from previously documented isocyanide-germylene interactions. The product exhibits extensive conjugation across its bicyclic C4Ge2N2 framework, conferring distinct photophysical properties, including prominent orange luminescence in both solution and solid states. The photophysical properties are supported by the TD-DFT calculations confirming an n -\&gt;pi* transition. The potential application of this compound in optoelectronic devices, particularly as a hole transport layer in PbS quantum dot solar cells, is also explored, with promising preliminary results.</p>
},
	keywords = {Germylene, hole transport layer, Isocyanide, reductive coupling},
	doi = {10.1002/anie.202417052},
	author = {Gour, Kritika and Pramanik, Debjit and Dash, Soumya Ranjan and Shinde, Dipak Dattatray and Venugopal, Geethu and Vanka, Kumar and Rath, Arup K. and Sen, Sakya S.}
}
