ChemInform Abstract: KRISTALL‐ UND MOLEKULARSTRUKTUR VON 1‐(P‐JOD‐PHENYL)‐3‐METHOXYCARBONYL‐4‐PHENACYLIDEN‐5‐HYDROXY‐5‐PHENYL‐PYRAZOLIN

Andreetti, G. D.; Bocelli, Gabriele; Cavalca, L.; Sgarabotto, Paólo

doi:10.1002/chin.197244102

Cited by 10 publications

(17 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These longer Cd-Clt, bond lengths are also consistent with those found in the literature, e.g. 2.73/~ in CdClz(thiocarbohydrazide-N,S)2 (Bigoli et al, 1971) and 2.742, 2.754, and 2.802A in CdCI2(NH2C3H6NH2) (Andreetti, Cavalca, Pellinghelli & Sgarabotto, 1971). The Cd-P bond distances of 2.563 and 2.617 ,/~ are quite consistent with the sum of the covalent radii for Cd and P (1.48 + 1.10 = 2.58/~) (Pauling, 1967) and with typical experimental values of 2.632 and 2.635 ,/~ in CdCI2[(C6Hs)aPI z (Cameron & Forrest, 1971).…”

Section: Resultssupporting

confidence: 91%

“…Although the Cd-N bond distances in A and B (2.502 and 2.506 ,/~) fall within the sum of the van der Waals radii for Cd and N (1.50 + 1.5 --3.0 /~) (Pauling, 1967), they considerably exceed the sum of the covalent radii (1.48 + 0.70 --2.18/~) and typically reported values such as 2.292 and 2.289A in CdCI2(NHECaH6NH2) (Andreetti et al, 1971), 2.34/~ in CdCl2(thiocarbohydrazide-N,S) 2 (Bigoli et al, 1971), and 2.281 and 2.296A in CdCIE(1-methylcytosine) (Gagnon et al, 1979). Since the axial Cd-N bond is so unusually long and presumably weak and the long Cd-Clt, is in the other axial position, the best description of the bonding about the Cd atom is probably a (3 + 2) strong-trigonal-weak-axial environment.…”

Section: Resultsmentioning

confidence: 87%

See 1 more Smart Citation

Structure of di-μ-chloro-bis[chloro(1-diethylamino-2-diphenylphosphinoethane)cadmium(II)]

Houk¹,

Gupta²,

Hossain³

et al. 1982

Acta Crystallogr Sect B

View full text Add to dashboard Cite

The overall structure of the two independent dimeric molecules is the same, although there are some minor geometric differences. The N and P atoms from the chelated bidentate ligand along with a terminal CI atom (Clt) and two bridging CI atoms (CIt,, CI~,) form a distorted trigonal-bipyramid environment about each Cd atom. Since both independent molecular dimers are characterized by very asymmetric CI bridges and a long Cd-N bond distance, the Cd environment may be alternately described as a (3 + 2) five-coordinate species utilizing three strong bonds to the P, terminal CI and one of the C1 bridge atoms and weaker ones with the N and the second bridging C1 atoms.

show abstract

Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 87%

Structure of di-μ-chloro-bis[chloro(1-diethylamino-2-diphenylphosphinoethane)cadmium(II)]

Houk¹,

Gupta²,

Hossain³

et al. 1982

Acta Crystallogr Sect B

View full text Add to dashboard Cite

show abstract

“…The Co-N distances are, as expected, slightly shorter than those observed in the five-coor- -methylthioethylamine-N,N,N]cobalt(I I), which are 1.986 (12) and 1.971 (11) .h. (Dapporto & Di Vaira, 1971) and much shorter than the 2.086 (7) A found in the octahedral bis(isothiocyanato)tetrakis-(4-vinylpyridine)cobalt(II) by Andreetti & Sgarabotto (1972).…”

mentioning

confidence: 82%

Potassium tetrakis(isothiocyanato)cobaltate(II) trihydrate: a redetermination

Drew¹,

Othman²

1975

Acta Crystallogr Sect B

View full text Add to dashboard Cite

“…3.703 where an average of 87.5' is observed (20). In Ni(non),'+ these angles (17) at 82.6" represent a significant distortion.…”

Section: Crystallographymentioning

confidence: 91%

Synthesis and crystal structure of an octahedral nickel(II) complex derived from pentaerythrityl tetraamine

McAuley¹,

Subramanian²,

Whitcombe³

1989

Can. J. Chem.

View full text Add to dashboard Cite

A. MCAULEY, S. SUBRAMANIAN, and T. W. WHITCOMBE. Can. J. Chem. 67, 1650 (1989). The Ni(I1) complex, ~i ( H t a m )~~+ (tam = pentaerythrityl tetraamine), has been prepared under controlled conditions. In this ion, three of the four amino groups of each ligand are coordinated to yield an octahedral structure which shows tetragonal and trigonal distortion. The fourth amino group is protonated in each case and binds strongly to the counter ion so4*-. The crystal structure (triclinic, P i , a = 8.913(3), b = 9.775(2), c = 7.505(3), a = 102.61(4)", P = 106.28(4)", y = 96.40(3)") has been refined, converging to final values ofR = 0.0347 and R,,, = 0.0386. The three dimensional nature of the hydrogen bonding in the crystal structure has been described. Differences in Ni-N bond lengths are observed. A transient nickel(II1) species is generated chemically or electrochemically. The esr spectrum is consistent with a low spin d7 centre and is axial in nature.Key words: nickel, pentaerythrityl tetraamine, hydrogen bonding, oxidation.A. MCAULEY, S. SUBRAMANIAN et T. W. WHITCOMBE. Can. J. Chem. 67, 1650 (1989). Optrant dans des conditions contr61ies, on a pripari le complexe de Ni(II), N i ( H t a~n )~~+ (tam = pentatrythrityl tttraamine). Dans cet ion, trois des quatre groupements amints de chacun des ligands sont coordonnis pour donner une structure octaedrique qui prtsente une distorsion tttragonale et trigonale. Dans chaque cas, le quatritme-groupement amini est protone et il se lie fortement au contre-ion ~0 4~' .On a affini la structure cristalline (triclinique, PI, a = 8,913(3), b = 9,775(2) et c = 7,505(3) A, a = 102,61(4), P = 106,28(4) et y = 96,40(3)") jusqu'i des valeurs finales de R = 0,0347 et R,,. = 0,0386. On decrit la nature tridimensionnelle des liaisons hydrogenes dans la structure cristalline. On a observt des differences dans les longueurs des liaisons Ni-N. I1 y a gkniration chimique ou Clectrochimique d'une espece transitoire de Ni(II1). Le spectre rpe est en accord avec un centre d7 de faible spin et de nature exiale.

show abstract

ChemInform Abstract: KRISTALL‐ UND MOLEKULARSTRUKTUR VON 1‐(P‐JOD‐PHENYL)‐3‐METHOXYCARBONYL‐4‐PHENACYLIDEN‐5‐HYDROXY‐5‐PHENYL‐PYRAZOLIN

Cited by 10 publications

References 0 publications

Structure of di-μ-chloro-bis[chloro(1-diethylamino-2-diphenylphosphinoethane)cadmium(II)]

Structure of di-μ-chloro-bis[chloro(1-diethylamino-2-diphenylphosphinoethane)cadmium(II)]

Potassium tetrakis(isothiocyanato)cobaltate(II) trihydrate: a redetermination

Synthesis and crystal structure of an octahedral nickel(II) complex derived from pentaerythrityl tetraamine

Contact Info

Product

Resources

About