@article { ISI:000358022300001,
	title = {Cations and dications of heavier group 14 elements in low oxidation states},
	journal = {Dalton Transactions},
	volume = {44},
	number = {29},
	year = {2015},
	month = {JUN},
	pages = {12903-12923},
	publisher = {ROYAL SOC CHEMISTRY},
	address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND},
	abstract = {<p>Cations and dications of heavier group 14 elements in their low oxidation state have received widespread attention in recent years. The journey started with the isolation of a series of cations of the composition [(C5Me5)E:](+) [E = Si-Pb], followed by the more recent isolation of a Ge(II) dication encapsulated within a cryptand, a carbodiphosphorane stabilized [GeCl](+) monocation with a two coordinate Ge atom, Si(II) cations and dications stabilized by N-heterocyclic carbenes (NHCs), which highlights the ongoing growth and interest in the chemistry of tetrel(II) cations. This is presumably because the central atom (E) in these compounds contains two or three unoccupied valence orbitals as well as holds a lone pair of electrons. Such an electronic description represents ambiphilicity, which is of great interest for catalysis. The successful synthesis of divalent group 14 cations requires new synthetic strategies based on the sterically demanding neutral or monoanionic ligands, utilization of counter anions, and solvents with low nucleophilicity in order to minimize the degree of interactions with the cations. An alternative approach for the realization of divalent cations of group 14 elements is their coordination to the transition metals. This synthetic approach was successfully applied for the isolation of a range of transition metal coordinated divalent cations of group 14 elements. Apart from arousing academic interest some of these cations have found application as activators in the Ziegler-Natta polymerization of alkenes.</p>},
	issn = {1477-9226},
	doi = {10.1039/c5dt01912e},
	author = {Swamy, V. S. V. S. N. and Pal, Shiv and Khan, Shabana and Sen, Sakya S.}
}
@article { ISI:000378295200030,
	title = {Facile access to a Ge(II) dication stabilized by isocyanides},
	journal = {Chemical Communications},
	volume = {52},
	number = {50},
	year = {2016},
	month = {MAY},
	pages = {7890-7892},
	publisher = {ROYAL SOC CHEMISTRY},
	address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND},
	abstract = {<p>Herein, we introduce isocyanide as a ligand in main group chemistry and describe the facile isolation of a Ge(II) dication. The reaction of 2,6-dimethylphenylisocyanide with GeCl2 leads to the formation of a Ge(II) dication with two [GeCl3](-) molecules as counter anions. The dicationic Ge(II) center is bound to four isocyanide ligands and also holds a lone pair of electrons. DFT calculations reveal that the dication is stabilized only by sigma-donation from the four isocyanide ligands. Natural population analysis gives a charge of +0.74 on the Ge(II) center, indicating that the positive charge is shared by the isocyanide substituents.</p>},
	issn = {1359-7345},
	doi = {10.1039/c6cc03789e},
	author = {Swamy, V. S. V. S. N. and Yadav, Sandeep and Pal, Shiv and Das, Tamal and Vanka, Kumar and Sen, Sakya S.}
}
@article {43664,
	title = {Strikingly diverse reactivity of structurally identical silylene and stannylene},
	journal = {Dalton Transactions},
	volume = {46},
	year = {2017},
	month = {MAY},
	pages = {6528-6532},
	abstract = {The reactivity of structurally identical silylene and stannylene [PhC(NtBu)(2)EN(SiMe3)(2)] (E = Si (1) and Sn (2)) towards coinage metals has been explored. While 1 has the propensity to form an adduct with coinage metals (4 and 5), 2 undergoes a ligand exchange reaction with copper halides and silver triflate leading to PhC(NtBu) 2SnX (X = Br (6), Cl (7), and OSO2CF3 (8)) with concomitant formation of [M{N(SiMe3) (2)}] (M = Cu, Ag). However, with AgSbF6 both 1 and 2 led to ion pairs, 9(+) .SbF(6)(-)and 10(+) . SbF(6)(-)displaying weaker Ag center dot center dot center dot center dot F interactions in the latter.},
	doi = {10.1039/c7dt01055a},
	author = {Parvin, Nasrina and Dasgupta, Rajarshi and Pal, Shiv and Sen, Sakya S. and Khan, Shabana}
}
@article {47742,
	title = {Organic-inorganic perovskitoid with zwitterion cysteamine linker and its crystal-crystal transformation to ruddlesden-popper phase},
	journal = {Angewandte Chemie-International Edition},
	volume = {60},
	year = {2021},
	month = {AUG },
	pages = {18750-18760},
	type = {Article},
	abstract = {We demonstrate synthesis of a new low-D hybrid perovskitoid (a perovskite-like hybrid halide structure, yellow crystals, P21/n space group) using zwitterion cysteamine (2-aminoethanethiol) linker, and its remarkable molecular diffusion-controlled crystal-to-crystal transformation to Ruddlesden-Popper phase (Red crystals, Pnma space group). Our stable intermediate perovskitoid distinctly differs from all previous reports by way of a unique staggered arrangement of holes in the puckered 2D configuration with a face-sharing connection between the corrugated-1D double chains. The PL intensity for the yellow phase is 5 orders higher as compared to the red phase and the corresponding average lifetime is also fairly long (143 ns). First principles DFT calculations conform very well with the experimental band gap data. We demonstrate applicability of the new perovskitoid yellow phase as an excellent active layer in a self-powered photodetector and for selective detection of Ni2+ via On-Off-On photoluminescence (PL) based on its composite with few-layer black phosphorous.},
	keywords = {Crystal growth, organic-inorganic hybrid composites, perovskite phases, photodetectors, zwitterions},
	issn = {1433-7851},
	doi = {10.1002/anie.202105918},
	author = {Kour, Prachi and Reddy, Mallu Chenna and Pal, Shiv and Sidhik, Siraj and Das, Tisita and Pandey, Padmini and Mukherjee, Shatabdi Porel and Chakraborty, Sudip and Mohite, Aditya D. and Ogale, Satishchandra}
}
