Table 7 The QTAIM topological parameters, including electron density (ρ(r)), Laplacian of electron density (2ρ(r)), the kinetic electron density G(r), potential electron density V(r), eigenvalues of Hessian matrix (λ), and bond ellipticity index (ε) at BCPs of the ADA/nanotube complex systems.

From: Quantum DFT methods to explore the interaction of 1-Adamantylamine with pristine, and P, As, Al, and Ga doped BN nanotubes

system

 

Bond

ρ(r)

\(\nabla^{2}\) ρ(r)

G(r)

V(r)

G/|V|

λ1

λ2

λ3

ε

BNNT(5,5)

T1

N–B(NT)

0.088

0.100

0.089

− 0.154

0.582

− 0.099

− 0.087

0.286

0.143

H1–N(NT)

0.017

0.034

0.008

− 0.007

1.110

− 0.010

− 0.010

0.054

0.114

H2–N(NT)

0.009

0.031

0.006

− 0.005

1.258

− 0.008

− 0.003

0.042

1.826

T2

H1–N(NT)

0.010

0.030

0.006

− 0.005

1.179

− 0.008

− 0.007

0.044

0.139

H2–N(NT)

0.008

0.027

0.006

− 0.005

1.242

− 0.004

− 0.002

0.033

0.983

N–B(NT)

0.088

0.100

0.089

− 0.153

0.581

− 0.099

− 0.087

0.286

0.143

T3

H1–N(NT)

0.008

0.024

0.005

− 0.004

1.174

− 0.007

− 0.007

0.037

0.103

H2–N(NT)

0.005

0.014

0.003

− 0.002

1.347

− 0.004

− 0.003

0.021

0.403

H3–B(NT)

0.004

0.011

0.002

− 0.002

1.361

− 0.003

− 0.003

0.017

0.125

T4

N–B(NT)

0.096

0.144

0.106

− 0.176

0.602

− 0.119

− 0.109

0.371

0.093

H1–N(NT)

0.010

0.030

0.006

− 0.005

1.179

− 0.008

− 0.007

0.044

0.139

H2–N(NT)

0.008

0.027

0.006

− 0.005

1.242

− 0.004

− 0.002

0.033

0.983

BNNT(6,6)

N–B(NT)

0.084

0.076

0.075

− 0.132

0.572

0.231

− 0.073

− 0.083

0.140

H1–N(NT)

0.011

0.033

0.007

− 0.006

1.212

0.050

− 0.008

− 0.010

0.215

H2–N(NT)

0.009

0.028

0.006

− 0.005

1.208

0.038

− 0.003

− 0.007

1.355

BNNT(7,7)

N–B(NT)

0.080

0.059

0.068

− 0.121

0.561

0.199

− 0.075

− 0.065

0.157

H1–N(NT)

0.010

0.031

0.007

− 0.005

1.215

0.047

− 0.009

− 0.007

0.265

H2–N(NT)

0.001

0.003

0.001

0.000

1.849

0.004

0.000

0.000

0.198

BNNT(Al)

H1–N(NT)

0.005

0.011

0.002

− 0.002

1.237

− 0.003

− 0.002

0.016

1.074

H2–N(NT)

0.007

0.021

0.004

− 0.003

1.288

− 0.006

− 0.003

0.030

0.753

BNNT(Ga)

H1–N(NT)

0.009

0.025

0.005

− 0.005

1.160

− 0.007

− 0.007

0.039

0.071

H2–N(NT)

0.012

0.034

0.008

− 0.007

1.098

− 0.010

− 0.008

0.054

0.285

N–Ga

0.078

0.293

0.091

− 0.110

0.832

− 0.094

− 0.093

0.480

0.005

BNNT(P)

H–P(NT)

0.008

0.025

0.005

− 0.004

1.275

− 0.007

− 0.007

0.039

0.023

BNNT(As)

H4–N(NT)

0.271

0.874

0.166

− 0.114

− 1.456

− 0.001

− 0.001

0.012

0.075

H4–B(NT)

0.311

0.105

0.194

− 0.124

− 1.565

− 0.002

− 0.001

0.013

0.875

H3–As

0.749

0.206

0.409

− 0.303

− 1.350

− 0.005

− 0.005

0.030

0.013

H2–As

0.121

0.351

0.765

− 0.652

− 1.173

− 0.009

− 0.008

0.053

0.078

H1–As

0.912

0.262

0.538

− 0.42

− 1.281

− 0.007

− 0.007

0.040

0.033

  1. All values have been obtained at B3LYP-D3(BJ)/6-311G* level of theory.