Rhodium(I) complexes of \alpha-keto-stabilised 1,2-bis(diphenylphosphino)alkane mono ylides (2003)
Saravanabharathi, D, Venkatakrishnan, TS, Nethaji, M, Krishnamurthy, SS
Rhodium(I) complexes of the hybrid ylide-phosphine ligands, $Ph_2P(CH_2)_nPPh_2(CHC(O)C_6H_5)$ (n = 1: dppm-yl, or 2: dppe-yl) have been synthesized from $[Rh(\mu-Cl)(COD)]_2$ (COD =...
Rhodium(I) complexes of \alpha-keto-stabilised 1,2-bis(diphenylphosphino)alkane mono ylides (2003)
Saravanabharathi, D, Venkatakrishnan, TS, Nethaji, M, Krishnamurthy, SS
Rhodium(I) complexes of the hybrid ylide-phosphine ligands, $Ph_2P(CH_2)_nPPh_2(CHC(O)C_6H_5)$ (n = 1: dppm-yl, or 2: dppe-yl) have been synthesized from $[Rh(\mu-Cl)(COD)]_2$ (COD =...
Aparna, K, Krishnamurthy, SS, Nethaji, M, Balaram, P
The structures of [La2(Aib)4(H2O)8](ClO4)6 (1) and [Pr2(Aib)4(H2O)8]Cl6·H2O (2) have been determined by X-ray crystallography and show that the two lanthanide cations are bridged by carboxyl groups...
Coordination chemistry of diphosphinoamine and cyclodiphosphazane ligands (1994)
Balakrishna, MS, Reddy, Sreenivasa V, Krishnamurthy, SS, Nixon, JF, Laurent, Burckett JCTR
The transition metal coordination and organometallic chemistry of acyclic diphosphazane ligands has grown rapidly in the last two decades and a stage has been reached that permits a delineation of...
Aparna, K, Krishnamurthy, SS, Nethaji, M, Balaram, P
The structures of [La2(Aib)4(H2O)8](ClO4)6 (1) and [Pr2(Aib)4(H2O)8]Cl6·H2O (2) have been determined by X-ray crystallography and show that the two lanthanide cations are bridged by carboxyl groups...
Coordination chemistry of diphosphinoamine and cyclodiphosphazane ligands (1994)
Balakrishna, MS, Reddy, Sreenivasa V, Krishnamurthy, SS, Nixon, JF, Laurent, Burckett JCTR
The transition metal coordination and organometallic chemistry of acyclic diphosphazane ligands has grown rapidly in the last two decades and a stage has been reached that permits a delineation of...
Reddy, Sreenivasa V, Krishnamurthy, SS, Nethaji, M
The reactions of cyclodiphosphazanes $[PhNP(OR)]_2 (R = CH_2CF_3 (1)\hspace{2mm}and\hspace{2mm}C_6H_4Me-p (2))$ with Group 6 metal carbonyl derivatives have been investigated. The stereochemistry of...
Reddy, Sreenivasa V, Krishnamurthy, SS, Nethaji, M
The reactions of cyclodiphosphazanes $[PhNP(OR)]_2 (R = CH_2CF_3 (1)\hspace{2mm}and\hspace{2mm}C_6H_4Me-p (2))$ with Group 6 metal carbonyl derivatives have been investigated. The stereochemistry of...
Pradeep, T, Hegde, MS, Balakrishna, MS, Krishnamurthy, SS
Vapour phase HeI photoelectron spectra of the diphosphazane ligands $RN(PX_2)_2$ $(R=CH_3 or C_6H_5, X=Cl, OCH_3 or OC_6H_5)$ are presented along with the assignments of bands on the basis of...
Balakrishna, MS, Prakasha, TK, Krishnamurthy, SS, Siriwardane, U, Hosmane, NS
The diphosphinoamines $X_2PN(R)PX_2 (L) (R = Me or Ph, X = OCH_2CF_3 $or OPh; $R = Ph, X = OC_6H_4Br-p; R = ^iPr, X = Ph)$ react with group 6 metal carbonyl derivatives to yield the cis-chelate...
Pradeep, T, Hegde, MS, Balakrishna, MS, Krishnamurthy, SS
Vapour phase HeI photoelectron spectra of the diphosphazane ligands $RN(PX_2)_2$ $(R=CH_3 or C_6H_5, X=Cl, OCH_3 or OC_6H_5)$ are presented along with the assignments of bands on the basis of...
Balakrishna, MS, Prakasha, TK, Krishnamurthy, SS, Siriwardane, U, Hosmane, NS
The diphosphinoamines $X_2PN(R)PX_2 (L) (R = Me or Ph, X = OCH_2CF_3 $or OPh; $R = Ph, X = OC_6H_4Br-p; R = ^iPr, X = Ph)$ react with group 6 metal carbonyl derivatives to yield the cis-chelate...
Diphosphazanes as Ligands. Symbiosis of Phosphorus Chemistry and Organometallic Chemistry (1989)
Balakrishna, MS, Prakasha, TK, Krishnamurthy, SS
A review contg. 10 refs. The reactivity of a range of new acyclic, cyclic and bicyclic diphosphazanes with Group VIB metal and iron carbonyl derivs. and organometallic derivs. of palladium, platinum...
Diphosphazanes as Ligands. Symbiosis of Phosphorus Chemistry and Organometallic Chemistry (1989)
Balakrishna, MS, Prakasha, TK, Krishnamurthy, SS
A review contg. 10 refs. The reactivity of a range of new acyclic, cyclic and bicyclic diphosphazanes with Group VIB metal and iron carbonyl derivs. and organometallic derivs. of palladium, platinum...
Ganapathiappan, S, Dhathathreyan, KS, Krishnamurthy, SS
Ring-opening thermal polymerization of hexachlorocyclotriphosphazene $(N_3P_3Cl_6)$ has been investigated at $250 ^oC$ and at 1.333-Pa pressure using chlorocyclotriphosphazenes $N_3P_3Cl_5(N=PPh_3)...
Swamy, PY Narayana, Ganapathiappan, S, Swamy, Kumara KC, Krishnamurthy, SS
Both associative $[S_N2(P)]$ and dissociative $[S_N1(P) and E_1CB]$ mechanisms have been established for the amination reactions of haloenocyclophosphazenes from synthetic and kinetic studies....
Nuclear magnetic resonance of cyclophosphazenes (1987)
Krishnamurthy, SS, Woods, Micheal
A review with 353 references.
Ganapathiappan, S, Dhathathreyan, KS, Krishnamurthy, SS
Ring-opening thermal polymerization of hexachlorocyclotriphosphazene $(N_3P_3Cl_6)$ has been investigated at $250 ^oC$ and at 1.333-Pa pressure using chlorocyclotriphosphazenes $N_3P_3Cl_5(N=PPh_3)...
Swamy, PY Narayana, Ganapathiappan, S, Swamy, Kumara KC, Krishnamurthy, SS
Both associative $[S_N2(P)]$ and dissociative $[S_N1(P) and E_1CB]$ mechanisms have been established for the amination reactions of haloenocyclophosphazenes from synthetic and kinetic studies....
Nuclear magnetic resonance of cyclophosphazenes (1987)
Krishnamurthy, SS, Woods, Micheal
A review with 353 references.
Krishnamurthy, SS, Cameron, TS, Vincent, BR, Kumaravel, SS
Geometrical isomers of $\lambda$3-diazadiphosphetidines show large differences in their 31P chem. shifts. Trifluoroethoxylation of cis-$(PhNPCl)_2$ gives only the low-field isomer initially, for...
Krishnamurthy, SS, Cameron, TS, Vincent, BR, Kumaravel, SS
Geometrical isomers of $\lambda$3-diazadiphosphetidines show large differences in their 31P chem. shifts. Trifluoroethoxylation of cis-$(PhNPCl)_2$ gives only the low-field isomer initially, for...
Studies of Phosphazenes Part XXVI: Bi(cyclophosphazenes)Containing A P-O-P Bridge (1985)
Katti, KV, Krishnamurthy, SS, Woods, Michael
Penta(phenoxy)chlorocyclotriphosphazene $[N_3P_3(OPh)_5Cl (1)]$ reacts with "(hydroxy)" phosphazenes, $N_3P_3(OPh)_5 OH)$ (2), $N_3P_3(OMe)_5(OH)$ (3) and gem-$N_3P_3(NHBu^t)_2(OMe)_2(OH)$ (4) to...
Studies of Phosphazenes Part XXVI: Bi(cyclophosphazenes)Containing A P-O-P Bridge (1985)
Katti, KV, Krishnamurthy, SS, Woods, Michael
Penta(phenoxy)chlorocyclotriphosphazene $[N_3P_3(OPh)_5Cl (1)]$ reacts with "(hydroxy)" phosphazenes, $N_3P_3(OPh)_5 OH)$ (2), $N_3P_3(OMe)_5(OH)$ (3) and gem-$N_3P_3(NHBu^t)_2(OMe)_2(OH)$ (4) to...
Swamy, Kumara KC, Ramabrahmam, P, Krishnamurthy, SS
The triphenylphosphazenyl cyclophosphazene, $N_3P_3(N=PPh_3)Cl_5$ (1) has been prepared by two new methods using Appel and Staudinger reactions. The effect of solvent on the synthesis of 1 from the...
Swamy, Kumara KC, Ramabrahmam, P, Krishnamurthy, SS
The triphenylphosphazenyl cyclophosphazene, $N_3P_3(N=PPh_3)Cl_5$ (1) has been prepared by two new methods using Appel and Staudinger reactions. The effect of solvent on the synthesis of 1 from the...
Ramabrahmam, P, Dhathathreyan, KS, Krishnamurthy, SS
Octachlorocyclotetraphosphazene $(N_4P_4Cl_8)$ reacts with an excess of $RNH_2 (R = Pr, Me_2CH, Bu)$ in $CHCl_3$ to give a mixture of bicyclic phosphazene, $N_4P_4(NHR)_6(NR)$, and octakis(amino)...
A change-over from $S_N2$(P) to $S_N1$(P) mechanism is established for the chlorine replacement reactions of halogenocyclophosphazenes; this mechanistic change-over helps in rationalising the diverse...
Methanolysis of (Triphenyl Phosphazenyl)Celora and Fluorocyclotriphosphazines (1983)
Kumaraswamy, KC, Krishnamurthy, SS
The different mechanistic features involved in the replacement of chlorine and fluorine atoms from $N_3P_3$ $(NPPh_3)X_5[X = Cl(I)$ or F(II)] by methoxide have been identified. An oxophosphazadiene...
Ramabrahmam, P, Dhathathreyan, KS, Krishnamurthy, SS
Octachlorocyclotetraphosphazene $(N_4P_4Cl_8)$ reacts with an excess of $RNH_2 (R = Pr, Me_2CH, Bu)$ in $CHCl_3$ to give a mixture of bicyclic phosphazene, $N_4P_4(NHR)_6(NR)$, and octakis(amino)...
A change-over from $S_N2$(P) to $S_N1$(P) mechanism is established for the chlorine replacement reactions of halogenocyclophosphazenes; this mechanistic change-over helps in rationalising the diverse...
Methanolysis of (Triphenyl Phosphazenyl)Celora and Fluorocyclotriphosphazines (1983)
Kumaraswamy, KC, Krishnamurthy, SS
The different mechanistic features involved in the replacement of chlorine and fluorine atoms from $N_3P_3$ $(NPPh_3)X_5[X = Cl(I)$ or F(II)] by methoxide have been identified. An oxophosphazadiene...
A carbon-13 NMR study of phenyl-substituted cyclophosphazenes (1981)
Krishnamurthy, SS, Ramabrahmam, P, Woods, M
The 13C NMR spectra of the cyclotriphosphazenes $N_3P_3CI_6_-_n Ph_n (n=2, 3, 4, 6)$ and the tetrameric derivatives $2,2,6,6-N_4P_4CI_4Ph_4$ and $N_4P_4Ph_8$ have been recorded. The carbon chemical...
A carbon-13 NMR study of phenyl-substituted cyclophosphazenes (1981)
Krishnamurthy, SS, Ramabrahmam, P, Woods, M
The 13C NMR spectra of the cyclotriphosphazenes $N_3P_3CI_6_-_n Ph_n (n=2, 3, 4, 6)$ and the tetrameric derivatives $2,2,6,6-N_4P_4CI_4Ph_4$ and $N_4P_4Ph_8$ have been recorded. The carbon chemical...
Krishnamurthy, SS, Rao, Sudheendra MN, Woods, M
The reaction of hexabromocyclotriphosphazene, N3P3Br6 with ethylamine yields the derivatives N3P3Br6−n(NHEt)n [n = 1, 2(two isomers), 4 and 6]. Two hydrogen bromide adducts, N3P3Br2(NHEt)4·HBr and...
Kinetic studies of aminolysis reactions of chlorocyclophosphazenes (1979)
Krishnamurthy, SS, Sundara, PM
Aminolysis reactions of halogenocyclophosphazenes constitute an important class of nucleophilic substitution reactions at a four-coordinate phosphorus(V) centre (I, 2). Several conclusions have been...
Thermal rearrangement reactions of methoxycyclophosphazenes (1979)
Dhathathreyan, KS, Krishnamurthy, SS, Murthy, Vasudeva AR, Shaw, Robert A, Woods, Michael
Alkoxycyclophosphazenes find use as flame retardants for textile fibres (1). The thermal rearrangement of alkoxycyclophosphazenes (2) merits a detailed study in view of its relevance to understanding...
Krishnamurthy, SS, Rao, Sudheendra MN, Woods, M
The reaction of hexabromocyclotriphosphazene, N3P3Br6 with ethylamine yields the derivatives N3P3Br6−n(NHEt)n [n = 1, 2(two isomers), 4 and 6]. Two hydrogen bromide adducts, N3P3Br2(NHEt)4·HBr and...
Kinetic studies of aminolysis reactions of chlorocyclophosphazenes (1979)
Krishnamurthy, SS, Sundara, PM
Aminolysis reactions of halogenocyclophosphazenes constitute an important class of nucleophilic substitution reactions at a four-coordinate phosphorus(V) centre (I, 2). Several conclusions have been...
Thermal rearrangement reactions of methoxycyclophosphazenes (1979)
Dhathathreyan, KS, Krishnamurthy, SS, Murthy, Vasudeva AR, Shaw, Robert A, Woods, Michael
Alkoxycyclophosphazenes find use as flame retardants for textile fibres (1). The thermal rearrangement of alkoxycyclophosphazenes (2) merits a detailed study in view of its relevance to understanding...
O-Phenanthroline Complexes of rare-earth perchlorates (1966)
Krishnamurthy, SS, Soundararajan, S
O-Phenanthroline complexes of four rare-earth perchlorates of the formula $M{(O-phen)}_4{(ClO_4)}_3$ where M = La, Ce, Pr or Nd have been prepared and their infrared spectra discussed.
O-Phenanthroline Complexes of rare-earth perchlorates (1966)
Krishnamurthy, SS, Soundararajan, S
O-Phenanthroline complexes of four rare-earth perchlorates of the formula $M{(O-phen)}_4{(ClO_4)}_3$ where M = La, Ce, Pr or Nd have been prepared and their infrared spectra discussed.