Research Projects

Completed projects: 11
Ongoing project: 2

Completed projects

1.	Title	Synthesis and reactions of silaza and silazoxy phosphines
	Funding agency	DST India (young scientist)
	Amount	Rs. 3.4 Lakhs
	Duration	1995-1997
	Co- PI	nil
	Summary	The aim of this project was to explore the possibility of synthesizing novel silaza and siloxy phosphines which can be used as cyclic Si-N –P and Si-O-P containing ligands. These compounds were synthesized and structurally characterized. A novel finding from this project work was the isolation of diazadiphosphetdines and the first structural characterization of the t- butyl derived diazadiphosphetidine.

2.	Title	Synthesis and reactions of Cyclodicarbathiatriazene heterocycles
	Funding agency	Royal Society of Chemistry, Cambridge, England
	Amount	U.K.Pounds 1500/-
	Duration	1997-98
	Co- PI	nil
	Summary	This project dealt with the synthesis of six membered CNS heterocycles having two carbons and one sulfur in the ring skeleton. A few of these compounds were prepared and some of their derivatives structurally characterized.

3.	Title	Organometallic chemistry of Carbaphosphazenes and perfluoro cyclophosphazenes
	Funding agency	CSIR, India
	Amount	Rs. 5.5 Lakhs
	Duration	1998-2001
	Co- PI	nil
	Summary	This project was solely dealing with fluorinated cylotriphosphazenes and the reactions of the same with ferrocene derived hydroxymethyl phosphine sulfides. The most interesting outcome of this project was the isolation and structural characterization of the first examples of exo and endo ansa substituted fluorophosphazenes. We were also able show that fluorinated cyclophosphazenes undergo ansa to spiro transformation in the presence of CsF as catalyst.

4.	Title	Carbon in the ring framework of Inorganic heterocycles: reactivity differences of P-Cl, C-Cl and S-Cl bonds of PNC and CNS heterocycles
	Funding agency	DST India
	Amount	Rs 15 Lakhs
	Duration	1998-2001
	Co- PI	nil
	Summary	The topic of this project was centered on the dealkylation reactions of tertiary amines with carbaphosphazenes and carbathiazenes. We were able to explore in detail the various aspects involved in the dealkylation of tertiary amines with these heterocycles. The most important results include the isolation and structural characterization of ring opened products of bicylic amines thus providing evidence for the intermediate formed in these reaction. Structural characterization of a variety of dialklyamino derivatives of carbathiazenes also formed a major outcome of this project. In addiotn the project also helped to make a variety of ferrocene derived thionylphosphazenes which were structurally characterized.

5.	Title	Ferrocene derived amines, phosphines and phosphine sulfides as a structural motif on Inorganic heterocycles
	Funding agency	CSIR India
	Amount	10.6 Lakhs
	Duration	2001-2004
	Co- PI	nil
	Summary	This project envisages the synthesis of ferrocene derived inorganic heterocycles. We have been able to make a series of ferrocene derived chloro as well as fluoro phosphazene derivatives and explore and compare the reactivity of chlorinated phosphazenes also with ferrocene derived phosphine sulfides. One interesting outcome was the realization that ansa to spiro transformation happens only for fluoro phosphazenes and in the case of chloro its does not happen. However in the presence of fluorinating agents the ring first undergoes fluorination followed by ansa to spiro transformation.

6.	Title	New directions in the chemistry of P-Cl and P-F bonds of cyclic and acyclic P-N compounds
	Funding agency	DST India
	Amount	22.57 Lakhs
	Duration	2003-2006
	Co- PI	nil
	Summary	In this project the chemistry of fluorinated and chlorinated cyclophosphazenes were compared along with exploring the chemistry of carbaphosphazenes. Important findings from this project include exploring the substitution pattern of 1,1 diphenyltetrafluoro cyclophosphazene with different diols, using carabaphosphazene as a reagent for converting alcohols to aldehydes, ketones and alkyl halides, preparation of lariat ether type carbaphosphazene derivatives and making novel ferrocene and cobalt based organometallic derivatives of fluorophosphazene and new synthetic routes to bridged fluorophosphazenes.

7.	Title	New directions in the chemistry of aminoalkylmetallocenes, metallocene carboxylic acids and aldehydes.
	Funding agency	CSIR India
	Amount	9.5 Lakhs
	Duration	2006-2009
	Co- PI	nil
	Summary	This project was envisaged to explore functional group chemistry of non ferrocenyl metal sandwich compounds. Synthesis of a host of such compounds are proposed and synthetic work on metallocenes made of transition metals other than iron were discovered

8.	Title	Synthetic and catalytic studies of organocobalt metallocenes, metallacycles and their inorganic heterocyclic derivatives.
	Funding agency	DST India
	Amount	32 lakhs
	Duration	2007-2010 (december)
	Co- PI	nil
	Summary	The project deals with cyclic phosphazenes and their organometallic derivatives especially those of cobalt and iron based sandwich compounds and metallacycles. The project also explored the possibility of developing chiral derivatives of cobalt sandwich compounds which has the potential of use as catalysts. A series of new phosphazene based alkynes were prepared which are potential precursors for new alkyne derived compounds.

9.	Title	Syntheses and catalytic studies of monomeric and dimeric organometallic iron and cobalt sandwich based compounds
	Funding agency	DST India
	Amount	44 lakhs
	Duration	2011-2013
	Co- PI	nil
	Summary	NA

10.	Title	Synthesis and catalysis of novel chiral and achiral derivatives of bulky organometallic iron and cobalt sandwich compounds
	Funding agency	CSIR India
	Amount	15.5 lakhs
	Duration	3 Years
	Co- PI	nil
	Summary	NA

11.	Title	Functionalized cobalt and iron sanwich compunds. Synthesis,Catalytic and mechanistic studies of new chiral and achiral ligands and their metal complexes
	Funding agency	DST(SERB) India
	Amount	41 lakhs
	Duration	2015-2018
	Co- PI	nil
	Summary	NA

Ongoing project

12.	Title	Development of new water soluble, main group, metal complex and organometallic catalysts for oxidation and related reactions
	Funding agency	CSIR India
	Amount	9.5 lakhs
	Duration	2019-2022
	Co- PI	nil
	Summary	NA

13.	Title	Synthesis and catalytic studies of water-soluble transition metal and main group element based sustainable catalysts for organic transformations.
	Funding agency	DST(SERB) India
	Amount	40.12 lakhs
	Duration	2020-2023
	Co- PI	nil
	Summary	NA